Doug's Headers - D303Y

Doug's Headers D303Y 1 3/4" Tri-Y Header Chevrolet Truck Big Block Chevrolet 68-87 Metallic Ceramic Coating

Doug's Headers D303Y 1 3/4" Tri-Y Header Chevrolet Truck Big Block Chevrolet 68-87 Metallic Ceramic Coating

Part Number: D303Y / UPC 694342506988
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Features & Benefits

  • 3/8" thick machined flanges to prevent warping
  • CNC mandrel bent tubes ensure accurate fit and better flow
  • Heavy 16-guage tubing for longer life
  • Tubes are pre-polished to removed scratches before applying metallic ceramic or hi-temp black coating

Doug's is the pioneering force behind the popular TRI-Y design for cars and trucks. The unique, shortend, paired primary tubes increase mid-range torque without sacrificing top end power. TRI-Y's are a great choice for daily drivers and heavy duty trucks looking to increase power from idle up to 4500 RPM while maintaining maximum fuel efficiency.


For the enthusiast who demands the best, Doug's Headers are not just components; they're a statement of excellence, a commitment to leading-edge performance, and a nod to the glory days of muscle cars and drag racing. Join the ranks of champions. Experience the unmatched quality and performance of Doug's Headers today.

Specifications

Finish Metallic Ceramic Coated
Material Steel
Design Full-length
Primary Tubing Diameter 1.75 IN
Collector Port Diameter 2.5 IN
Port Shape SAP
Tube Wall Thickness 16 Gauge
Flange Thickness 0.375 IN
Collector Attachment 3-Bolt Flange
EGT Port No
Oxygen Sensor Port No
Gasket Or Seal Included Yes
Mounting Hardware Included Yes
Sheen Level Semi-Gloss

Installation instructions

Instruction Manual
Installation Instructions

Download PDF

Shipping & Delivery

Our ignition and exhaust products ship from our warehouse in Lenexa, KS. Our normal shipping time is 2-3 business days for in-stock parts.

 Shipping Class Order Value Shipping Cost
UPS Ground $0 - 49.99 $6.99 flat rate
UPS Ground $50 - 98.99 $7.49 flat rate
UPS Ground $99+ Free

  • At this time, PerTronix does not offer expedited shipping options from our website.
  • All packages must be inspected upon receipt for any missing or damaged goods and claims for such must be made within 7 days of receipt.
  • PerTronix does not currently ship our products internationally from our web store. For international orders call 909-599-5955 or connect with us here.

Returns & Replacements

Returns at Pertronix are accepted within 90 days of purchase with prior authorization, ensuring items are in new, resalable condition. To initiate a return, call for an RGA and follow provided instructions. Customers are responsible for return shipping, using a trackable method.

Refunds exclude initial shipping and handling fees and may be subject to a restocking fee. For defective or damaged items, contact Pertronix directly. We are not responsible for user-initiated damage/loss of parts.

For complete details, visit our Returns page.

Reviews

Doug's Headers - D303Y

Doug's Headers D303Y 1 3/4" Tri-Y Header Chevrolet Truck Big Block Chevrolet 68-87 Metallic Ceramic Coating

Doug's Headers D303Y 1 3/4" Tri-Y Header Chevrolet Truck Big Block Chevrolet 68-87 Metallic Ceramic Coating

Part Number: D303Y / UPC 694342506988
Regular price $971.45
Sale price $971.45 Regular price

Part Number: D303Y / UPC 694342506988
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Need help? Call us at 909-599-5955

  • Free shipping on $99+ orders in lower 48 states
  • 90-day return policy
  • We’re here to help! Call us on 909-599-5955
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Features & Benefits

  • 3/8" thick machined flanges to prevent warping
  • CNC mandrel bent tubes ensure accurate fit and better flow
  • Heavy 16-guage tubing for longer life
  • Tubes are pre-polished to removed scratches before applying metallic ceramic or hi-temp black coating

Doug's is the pioneering force behind the popular TRI-Y design for cars and trucks. The unique, shortend, paired primary tubes increase mid-range torque without sacrificing top end power. TRI-Y's are a great choice for daily drivers and heavy duty trucks looking to increase power from idle up to 4500 RPM while maintaining maximum fuel efficiency.


For the enthusiast who demands the best, Doug's Headers are not just components; they're a statement of excellence, a commitment to leading-edge performance, and a nod to the glory days of muscle cars and drag racing. Join the ranks of champions. Experience the unmatched quality and performance of Doug's Headers today.

Specifications

Finish Metallic Ceramic Coated
Material Steel
Design Full-length
Primary Tubing Diameter 1.75 IN
Collector Port Diameter 2.5 IN
Port Shape SAP
Tube Wall Thickness 16 Gauge
Flange Thickness 0.375 IN
Collector Attachment 3-Bolt Flange
EGT Port No
Oxygen Sensor Port No
Gasket Or Seal Included Yes
Mounting Hardware Included Yes
Sheen Level Semi-Gloss

Installation instructions

Instruction Manual
Installation Instructions

Download PDF

Shipping & Delivery

Our ignition and exhaust products ship from our warehouse in Lenexa, KS. Our normal shipping time is 2-3 business days for in-stock parts.

 Shipping Class Order Value Shipping Cost
UPS Ground $0 - 49.99 $6.99 flat rate
UPS Ground $50 - 98.99 $7.49 flat rate
UPS Ground $99+ Free

  • At this time, PerTronix does not offer expedited shipping options from our website.
  • All packages must be inspected upon receipt for any missing or damaged goods and claims for such must be made within 7 days of receipt.
  • PerTronix does not currently ship our products internationally from our web store. For international orders call 909-599-5955 or connect with us here.

Returns & Replacements

Returns at Pertronix are accepted within 90 days of purchase with prior authorization, ensuring items are in new, resalable condition. To initiate a return, call for an RGA and follow provided instructions. Customers are responsible for return shipping, using a trackable method.

Refunds exclude initial shipping and handling fees and may be subject to a restocking fee. For defective or damaged items, contact Pertronix directly. We are not responsible for user-initiated damage/loss of parts.

For complete details, visit our Returns page.

Reviews

Applications

Year / Make / Model 1968-1969 Chevrolet C10 Pickup
Engine Type V8
Engine Size(s) Liters: 6.5
Cubic Inches: 396
Notes
  • Does not fit 4 speed applications with Factory Side bell housing mounts.
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1970-1972 Chevrolet C10 Pickup
Engine Type V8
Engine Size(s) Liters: 6.6
Cubic Inches: 402
Notes
  • Does not fit 4 speed applications with Factory Side bell housing mounts.
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1973-1974 Chevrolet C10 Pickup
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Does not fit 4 speed applications with Factory Side bell housing mounts.
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1968-1969 Chevrolet C20 Pickup
Engine Type V8
Engine Size(s) Liters: 6.5
Cubic Inches: 396
Notes
  • Does not fit 4 speed applications with Factory Side bell housing mounts.
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1970-1972 Chevrolet C20 Pickup
Engine Type V8
Engine Size(s) Liters: 6.6
Cubic Inches: 402
Notes
  • Does not fit 4 speed applications with Factory Side bell housing mounts.
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1973-1974 Chevrolet C20 Pickup
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Does not fit 4 speed applications with Factory Side bell housing mounts.
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1968-1969 Chevrolet C30 Pickup
Engine Type V8
Engine Size(s) Liters: 6.5
Cubic Inches: 396
Notes
  • Does not fit 4 speed applications with Factory Side bell housing mounts.
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1970-1972 Chevrolet C30 Pickup
Engine Type V8
Engine Size(s) Liters: 6.6
Cubic Inches: 402
Notes
  • Does not fit 4 speed applications with Factory Side bell housing mounts.
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1973-1974 Chevrolet C30 Pickup
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Does not fit 4 speed applications with Factory Side bell housing mounts.
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1968-1969 Chevrolet K10 Pickup
Engine Type V8
Engine Size(s) Liters: 6.5
Cubic Inches: 396
Notes
  • Does not fit 4 speed applications with Factory Side bell housing mounts.
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1970-1972 Chevrolet K10 Pickup
Engine Type V8
Engine Size(s) Liters: 6.6
Cubic Inches: 402
Notes
  • Does not fit 4 speed applications with Factory Side bell housing mounts.
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1973-1974 Chevrolet K10 Pickup
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Does not fit 4 speed applications with Factory Side bell housing mounts.
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1968-1969 Chevrolet K20 Pickup
Engine Type V8
Engine Size(s) Liters: 6.5
Cubic Inches: 396
Notes
  • Does not fit 4 speed applications with Factory Side bell housing mounts.
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1970-1972 Chevrolet K20 Pickup
Engine Type V8
Engine Size(s) Liters: 6.6
Cubic Inches: 402
Notes
  • Does not fit 4 speed applications with Factory Side bell housing mounts.
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1973-1974 Chevrolet K20 Pickup
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Does not fit 4 speed applications with Factory Side bell housing mounts.
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1968-1969 Chevrolet K30 Pickup
Engine Type V8
Engine Size(s) Liters: 6.5
Cubic Inches: 396
Notes
  • Does not fit 4 speed applications with Factory Side bell housing mounts.
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1970-1972 Chevrolet K30 Pickup
Engine Type V8
Engine Size(s) Liters: 6.6
Cubic Inches: 402
Notes
  • Does not fit 4 speed applications with Factory Side bell housing mounts.
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1973-1974 Chevrolet K30 Pickup
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Does not fit 4 speed applications with Factory Side bell housing mounts.
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1973-1974 Chevrolet Blazer
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1976-1978 Chevrolet K5 Blazer
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Does not fit 4 speed applications with Factory Side bell housing mounts.
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1975-1980 Chevrolet C10
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1968-1969 Chevrolet C10 Suburban
Engine Type V8
Engine Size(s) Liters: 6.5
Cubic Inches: 396
Notes
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1970-1972 Chevrolet C10 Suburban
Engine Type V8
Engine Size(s) Liters: 6.6
Cubic Inches: 402
Notes
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1973-1980 Chevrolet C10 Suburban
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1975-1987 Chevrolet C20
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1968-1969 Chevrolet C20 Suburban
Engine Type V8
Engine Size(s) Liters: 6.5
Cubic Inches: 396
Notes
  • Does not fit 4 speed applications with Factory Side bell housing mounts.
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1970-1972 Chevrolet C20 Suburban
Engine Type V8
Engine Size(s) Liters: 6.6
Cubic Inches: 402
Notes
  • Does not fit 4 speed applications with Factory Side bell housing mounts.
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1973-1986 Chevrolet C20 Suburban
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1975-1986 Chevrolet C30
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1988-1991 Chevrolet C3500
Engine Type V8
Engine Size(s) Cubic Inches: 454
Notes
  • Tri Y Design
  • Does not fit 4 Speed with Bellhousing Mounts

Year / Make / Model 1976 Chevrolet K10
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1980 Chevrolet K10
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1968-1969 Chevrolet K10 Suburban
Engine Type V8
Engine Size(s) Liters: 6.5
Cubic Inches: 396
Notes
  • Does not fit 4 speed applications with Factory Side bell housing mounts.
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1970-1972 Chevrolet K10 Suburban
Engine Type V8
Engine Size(s) Liters: 6.6
Cubic Inches: 402
Notes
  • Does not fit 4 speed applications with Factory Side bell housing mounts.
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1973-1974 Chevrolet K10 Suburban
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Does not fit 4 speed applications with Factory Side bell housing mounts.
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1976-1978 Chevrolet K20
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1968-1969 Chevrolet K20 Suburban
Engine Type V8
Engine Size(s) Liters: 6.5
Cubic Inches: 396
Notes
  • Does not fit 4 speed applications with Factory Side bell housing mounts.
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1970-1972 Chevrolet K20 Suburban
Engine Type V8
Engine Size(s) Liters: 6.6
Cubic Inches: 402
Notes
  • Does not fit 4 speed applications with Factory Side bell housing mounts.
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1973-1974 Chevrolet K20 Suburban
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Big block frame stands and motor mounts required for proper fit.
  • Does not fit 4 speed applications with Factory Side bell housing mounts.

Year / Make / Model 1985 Chevrolet K20 Suburban
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1977 Chevrolet K30
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Does not fit 4 speed applications with Factory Side bell housing mounts.
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1980-1986 Chevrolet K30
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Does not fit 4 speed applications with Factory Side bell housing mounts.
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1988-1991 Chevrolet K3500 Standard Cab Pickup
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1987-1988 Chevrolet R20
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1987-1988 Chevrolet R20 Suburban
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1989 Chevrolet R2500
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1989-1991 Chevrolet R2500 Suburban
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1987-1988 Chevrolet R30
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1989-1991 Chevrolet R3500 Crew Cab Pickup
Engine Type V8
Engine Size(s) Cubic Inches: 454
Notes
  • Does not fit 4 speed applications with Factory Side bell housing mounts.
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1989 Chevrolet R3500 Standard Cab Pickup
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1989 Chevrolet R3500 Crew Cab Pickup
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1987-1988 Chevrolet V20 Suburban
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Big block frame stands and motor mounts required for proper fit.
  • Tri Y design.

Year / Make / Model 1990 Chevrolet V2500 Suburban
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1987-1988 Chevrolet V30 Standard Cab Pickup
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1987-1988 Chevrolet V30 Crew Cab Pickup
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1989-1991 Chevrolet V3500 Crew Cab Pickup
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1989 Chevrolet V3500 Standard Cab Pickup
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Does not fit 4 speed applications with Factory Side bell housing mounts.
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1989 Chevrolet V3500 Crew Cab Pickup
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Does not fit 4 speed applications with Factory Side bell housing mounts.
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1968-1969 GMC C15/C1500 Pickup
Engine Type V8
Engine Size(s) Liters: 6.5
Cubic Inches: 396
Notes
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1970-1972 GMC C15/C1500 Pickup
Engine Type V8
Engine Size(s) Liters: 6.6
Cubic Inches: 402
Notes
  • Does not fit 4 speed applications with Factory Side bell housing mounts.
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1973-1974 GMC C15/C1500 Pickup
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1968-1969 GMC C15/C1500 Suburban
Engine Type V8
Engine Size(s) Liters: 6.5
Cubic Inches: 396
Notes
  • Does not fit 4 speed applications with Factory Side bell housing mounts.
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1970-1972 GMC C15/C1500 Suburban
Engine Type V8
Engine Size(s) Liters: 6.6
Cubic Inches: 402
Notes
  • Does not fit 4 speed applications with Factory Side bell housing mounts.
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1973-1974 GMC C15/C1500 Suburban
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Does not fit 4 speed applications with Factory Side bell housing mounts.
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1968-1969 GMC C25/C2500 Pickup
Engine Type V8
Engine Size(s) Liters: 6.5
Cubic Inches: 396
Notes
  • Does not fit 4 speed applications with Factory Side bell housing mounts.
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1970-1972 GMC C25/C2500 Pickup
Engine Type V8
Engine Size(s) Liters: 6.6
Cubic Inches: 402
Notes
  • Does not fit 4 speed applications with Factory Side bell housing mounts.
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1973-1974 GMC C25/C2500 Pickup
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Does not fit 4 speed applications with Factory Side bell housing mounts.
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1968-1969 GMC C25/C2500 Suburban
Engine Type V8
Engine Size(s) Liters: 6.5
Cubic Inches: 396
Notes
  • Does not fit 4 speed applications with Factory Side bell housing mounts.
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1970-1972 GMC C25/C2500 Suburban
Engine Type V8
Engine Size(s) Liters: 6.6
Cubic Inches: 402
Notes
  • Does not fit 4 speed applications with Factory Side bell housing mounts.
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1973-1974 GMC C25/C2500 Suburban
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Does not fit 4 speed applications with Factory Side bell housing mounts.
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1968-1969 GMC C35/C3500 Pickup
Engine Type V8
Engine Size(s) Liters: 6.5
Cubic Inches: 396
Notes
  • Does not fit 4 speed applications with Factory Side bell housing mounts.
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1970-1972 GMC C35/C3500 Pickup
Engine Type V8
Engine Size(s) Liters: 6.6
Cubic Inches: 402
Notes
  • Does not fit 4 speed applications with Factory Side bell housing mounts.
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1973-1974 GMC C35/C3500 Pickup
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Does not fit 4 speed applications with Factory Side bell housing mounts.
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1968-1969 GMC K15/K1500 Pickup
Engine Type V8
Engine Size(s) Liters: 6.5
Cubic Inches: 396
Notes
  • Does not fit 4 speed applications with Factory Side bell housing mounts.
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1970-1972 GMC K15/K1500 Pickup
Engine Type V8
Engine Size(s) Liters: 6.6
Cubic Inches: 402
Notes
  • Does not fit 4 speed applications with Factory Side bell housing mounts.
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1973-1974 GMC K15/K1500 Pickup
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Does not fit 4 speed applications with Factory Side bell housing mounts.
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1968-1969 GMC K15/K1500 Suburban
Engine Type V8
Engine Size(s) Liters: 6.5
Cubic Inches: 396
Notes
  • Does not fit 4 speed applications with Factory Side bell housing mounts.
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1970-1972 GMC K15/K1500 Suburban
Engine Type V8
Engine Size(s) Liters: 6.6
Cubic Inches: 402
Notes
  • Does not fit 4 speed applications with Factory Side bell housing mounts.
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1973-1974 GMC K15/K1500 Suburban
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Does not fit 4 speed applications with Factory Side bell housing mounts.
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1968-1969 GMC K25/K2500 Pickup
Engine Type V8
Engine Size(s) Liters: 6.5
Cubic Inches: 396
Notes
  • Does not fit 4 speed applications with Factory Side bell housing mounts.
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1970-1972 GMC K25/K2500 Pickup
Engine Type V8
Engine Size(s) Liters: 6.6
Cubic Inches: 402
Notes
  • Does not fit 4 speed applications with Factory Side bell housing mounts.
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1973-1974 GMC K25/K2500 Pickup
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Does not fit 4 speed applications with Factory Side bell housing mounts.
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1968-1969 GMC K25/K2500 Suburban
Engine Type V8
Engine Size(s) Liters: 6.5
Cubic Inches: 396
Notes
  • Does not fit 4 speed applications with Factory Side bell housing mounts.
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1970-1972 GMC K25/K2500 Suburban
Engine Type V8
Engine Size(s) Cubic Inches: 402
Notes
  • Does not fit 4 speed applications with Factory Side bell housing mounts.
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1973-1974 GMC K25/K2500 Suburban
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Does not fit 4 speed applications with Factory Side bell housing mounts.
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1968-1969 GMC K35/K3500 Pickup
Engine Type V8
Engine Size(s) Liters: 6.5
Cubic Inches: 396
Notes
  • Does not fit 4 speed applications with Factory Side bell housing mounts.
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1970-1972 GMC K35/K3500 Pickup
Engine Type V8
Engine Size(s) Liters: 6.6
Cubic Inches: 402
Notes
  • Does not fit 4 speed applications with Factory Side bell housing mounts.
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1979-1980 GMC C1500
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1979-1980 GMC C1500 Suburban
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1979-1986 GMC C2500
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1979-1986 GMC C2500 Suburban
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1979-1986 GMC C3500 Cab & Chassis
Engine Type V8
Engine Size(s) Cubic Inches: 454
Notes

Year / Make / Model 1988-1991 GMC C3500 Cab & Chassis
Engine Type V8
Engine Size(s) Cubic Inches: 454
Notes

Year / Make / Model 1979-1986 GMC C3500
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Big block frame stands and motor mounts required for proper fit.
  • Tri Y design.

Year / Make / Model 1979-1986 GMC C3500 Standard Cab Pickup
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1979-1986 GMC C3500 Crew Cab Pickup
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1980 GMC K1500
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1979-1986 GMC K3500
Engine Type V8
Engine Size(s) Cubic Inches: 454
Notes

Year / Make / Model 1988-1991 GMC K3500
Engine Type V8
Engine Size(s) Cubic Inches: 454
Notes

Year / Make / Model 1979-1986 GMC K3500 Standard Cab Pickup
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1979-1986 GMC K3500 Crew Cab Pickup
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1987-1989 GMC R2500 Crew Cab Pickup
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1987-1991 GMC R2500 Suburban
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1987-1991 GMC R3500 Crew Cab Pickup
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1987-1989 GMC R3500 Standard Cab Pickup
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1987-1991 GMC V3500 Crew Cab Pickup
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1975-1978 GMC C15
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1975-1978 GMC C15 Suburban
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1975-1978 GMC C25
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1975-1978 GMC C25 Suburban
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1975-1978 GMC C35
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1973-1974 GMC Jimmy
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1976 GMC Jimmy
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1976 GMC K15
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1976-1978 GMC K25
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Big block frame stands and motor mounts required for proper fit.

Year / Make / Model 1976-1977 GMC K25 Suburban
Engine Type V8
Engine Size(s) Liters: 7.4
Cubic Inches: 454
Notes
  • Big block frame stands and motor mounts required for proper fit.

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