Features & BenefitsSpecificationsApplications

1978-88 GM G-Body Small Block 1 5/8" TRI-Y Header with Metallic Ceramic Coating

Emissions code 3 Emissions Code
Part Number: D370Y In Stock
FAQs
  • Doug's Headers D370Y 1 5/8"-2" Tri-Y Header
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$499.00
$499.00 $989.41 Save 49%
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Add a Matching Ignition Coil
Total price: $499.00
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Free shipping on orders over $100 in contiguous 48 states.

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Reliable Quality

Products built to last for enduring performance.

Features & Benefits

Highlights

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.

  • 3/8” thick machined flanges to prevent warping
  • CNC mandrel bent tubes for an accurate fit and improved flow
  • Durable 16 gauge tubing
  • 1 5/8" Primary Tubing Diameter
  • 2.5" Collector Port Diameter
  • Oval Port Shape
  • Metallic Ceramic Coating
Why pick Doug's Metallic Ceramic Coating finish?

Our Metallic Ceramic Coating protects and extends the life of headers by creating a thermal barrier which significantly lowers under hood temperatures and protects the substrate metal from thermal fatigue. After the Metallic Ceramic Coating is applied, it is polished with a vibratory finishing process that produces a high luster aluminum appearance. The polishing process compresses and activates the coating, creating a surface which is harder and 60% more corrosion resistant than an unpolished surface.

Need Help? Talk to our experts

(913) 808-2376 Email

Specifications
Finish Metallic Ceramic Coated
Material Steel
Design Tri-Y
Primary Tubing Diameter 1.625 Inches
Collector Port Diameter 2.5 Inches
Port Shape Oval
Tube Wall Thickness 16 Gauge
Flange Thickness 0.375 Inches
Collector Attachment 3-Bolt Flange
Oxygen Sensor Port No
Gasket Or Seal Included Yes
Mounting Hardware Included Yes
Grade Type Performance
Color Silver
Sheen Level Semi-Gloss

Exhaust Header Dimensions
A - Left 3 1/2"
A - Right 4 3/4"
B - Left 16 1/2"
B - Right 16"
C - Left 33"
C - Right 32"

Installation instructions
Instruction Manual
Installation Instructions
Download

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 - 108.99 $7.49 flat rate
UPS Ground $109+ 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.

  • Once an item has tracking info, it cannot be cancelled. If you decide you don’t want the items after shipment, please take receipt of the item and process it via our return policy. Thank you for understanding!

 

Shipping Dock Hours of Operations

7:00am to 4:00pm CST Monday-Friday

Receiving Dock Numbers: 7 and 8

Shipping Dock Numbers: 13, 14, and 15

Returns, Replacements & Warranty

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.

Warranty

Fitment

Vehicles

Year / Make / Model Engine Type Engine Size(s) Notes
1978-1987 Chevrolet El Camino V8 Liters: 5.0
Cubic Inches: 305
  • Fits most angle plug heads.
  • Fits D-Port cylinder heads including ZZ4 crate engines. Will Not fit GM Fast Burn head PN 19300955 or SP350, SP383 & ZZ6 engines.
  • Requires removal or modification of locking steering columns if equipped.
  • Installation requires left side A/C bracket part number H7608. 1979 and later vehicles with short compressors can use the stock bracket.
  • Does not fit with power glide transmission.
1978-1979 Chevrolet El Camino V8 Liters: 5.7
Cubic Inches: 350
  • Fits most angle plug heads.
  • Fits D-Port cylinder heads including ZZ4 crate engines. Will Not fit GM Fast Burn head PN 19300955 or SP350, SP383 & ZZ6 engines.
  • Requires removal or modification of locking steering columns if equipped.
  • Installation requires left side A/C bracket part number H7608. 1979 and later vehicles with short compressors can use the stock bracket.
  • Does not fit with power glide transmission.
1983-1984 Chevrolet El Camino V8 Liters: 5.7
Cubic Inches: 350
  • Fits most angle plug heads.
  • Fits D-Port cylinder heads including ZZ4 crate engines. Will Not fit GM Fast Burn head PN 19300955 or SP350, SP383 & ZZ6 engines.
  • Requires removal or modification of locking steering columns if equipped.
  • Installation requires left side A/C bracket part number H7608. 1979 and later vehicles with short compressors can use the stock bracket.
  • Does not fit with power glide transmission.
1979-1982 Chevrolet El Camino V8 Liters: 4.4
Cubic Inches: 267
  • Fits most angle plug heads.
  • Fits D-Port cylinder heads including ZZ4 crate engines. Will Not fit GM Fast Burn head PN 19300955 or SP350, SP383 & ZZ6 engines.
  • Requires removal or modification of locking steering columns if equipped.
  • Installation requires left side A/C bracket part number H7608. 1979 and later vehicles with short compressors can use the stock bracket.
  • Does not fit with power glide transmission.
1978-1983 Chevrolet Malibu V8 Liters: 5.0, 5.7
Cubic Inches: 305, 350
  • Fits most angle plug heads.
  • Fits D-Port cylinder heads including ZZ4 crate engines. Will Not fit GM Fast Burn head PN 19300955 or SP350, SP383 & ZZ6 engines.
  • Requires removal or modification of locking steering columns if equipped.
  • Installation requires left side A/C bracket part number H7608. 1979 and later vehicles with short compressors can use the stock bracket.
  • Does not fit with power glide transmission.
1979-1982 Chevrolet Malibu V8 Liters: 4.4
Cubic Inches: 267
  • Fits most angle plug heads.
  • Fits D-Port cylinder heads including ZZ4 crate engines. Will Not fit GM Fast Burn head PN 19300955 or SP350, SP383 & ZZ6 engines.
  • Requires removal or modification of locking steering columns if equipped.
  • Installation requires left side A/C bracket part number H7608. 1979 and later vehicles with short compressors can use the stock bracket.
1978-1988 Chevrolet Monte Carlo V8 Liters: 5.0
Cubic Inches: 305
  • Installation requires left side A/C bracket part number H7608. 1979 and later vehicles with short compressors can use the stock bracket.
  • Requires removal or modification of locking steering columns if equipped.
  • Fits most angle plug heads.
  • Fits D-Port cylinder heads including ZZ4 crate engines. Will Not fit GM Fast Burn head PN 19300955 or SP350, SP383 & ZZ6 engines.
  • Does not fit with power glide transmission.
1979-1982 Chevrolet Monte Carlo V8 Liters: 4.4
Cubic Inches: 267
  • Installation requires left side A/C bracket part number H7608. 1979 and later vehicles with short compressors can use the stock bracket.
  • Requires removal or modification of locking steering columns if equipped.
  • Fits most angle plug heads.
  • Fits D-Port cylinder heads including ZZ4 crate engines. Will Not fit GM Fast Burn head PN 19300955 or SP350, SP383 & ZZ6 engines.
  • Does not fit with power glide transmission.
1982-1984 Chevrolet Monte Carlo V8 Liters: 5.7
Cubic Inches: 350
  • Installation requires left side A/C bracket part number H7608. 1979 and later vehicles with short compressors can use the stock bracket.
  • Requires removal or modification of locking steering columns if equipped.
  • Fits most angle plug heads.
  • Fits D-Port cylinder heads including ZZ4 crate engines. Will Not fit GM Fast Burn head PN 19300955 or SP350, SP383 & ZZ6 engines.
  • Does not fit with power glide transmission.
1978-1980 Oldsmobile Cutlass V8 Liters: 5.0
Cubic Inches: 305
  • Does not fit with power glide transmission.
  • Fits most angle plug heads.
  • Fits D-Port cylinder heads including ZZ4 crate engines. Will Not fit GM Fast Burn head PN 19300955 or SP350, SP383 & ZZ6 engines.
  • Requires removal or modification of locking steering columns if equipped.
  • Installation requires left side A/C bracket part number H7608. 1979 and later vehicles with short compressors can use the stock bracket.
  • Fits Factory Installed Chevrolet 265-350 small block engines.
1978-1979 Oldsmobile Cutlass V8 Liters: 5.7
Cubic Inches: 350
  • Does not fit with power glide transmission.
  • Fits Factory Installed Chevrolet 265-350 small block engines.
  • Fits most angle plug heads.
  • Fits D-Port cylinder heads including ZZ4 crate engines. Will Not fit GM Fast Burn head PN 19300955 or SP350, SP383 & ZZ6 engines.
  • Requires removal or modification of locking steering columns if equipped.
  • Installation requires left side A/C bracket part number H7608. 1979 and later vehicles with short compressors can use the stock bracket.
1983-1986 Pontiac Bonneville V8 Liters: 5.0
Cubic Inches: 305
  • Does not fit with power glide transmission.
  • Fits Factory Installed Chevrolet 265-350 small block engines.
  • Fits most angle plug heads.
  • Fits D-Port cylinder heads including ZZ4 crate engines. Will Not fit GM Fast Burn head PN 19300955 or SP350, SP383 & ZZ6 engines.
  • Requires removal or modification of locking steering columns if equipped.
  • Installation requires left side A/C bracket part number H7608. 1979 and later vehicles with short compressors can use the stock bracket.
1978-1980 Pontiac Grand Prix V8 Liters: 5.0
Cubic Inches: 305
  • Does not fit with power glide transmission.
  • Fits Factory Installed Chevrolet 265-350 small block engines.
  • Fits most angle plug heads.
  • Fits D-Port cylinder heads including ZZ4 crate engines. Will Not fit GM Fast Burn head PN 19300955 or SP350, SP383 & ZZ6 engines.
  • Requires removal or modification of locking steering columns if equipped.
  • Installation requires left side A/C bracket part number H7608. 1979 and later vehicles with short compressors can use the stock bracket.
1983-1987 Pontiac Grand Prix V8 Liters: 5.0
Cubic Inches: 305
  • Does not fit with power glide transmission.
  • Fits Factory Installed Chevrolet 265-350 small block engines.
  • Fits most angle plug heads.
  • Fits D-Port cylinder heads including ZZ4 crate engines. Will Not fit GM Fast Burn head PN 19300955 or SP350, SP383 & ZZ6 engines.
  • Requires removal or modification of locking steering columns if equipped.
  • Installation requires left side A/C bracket part number H7608. 1979 and later vehicles with short compressors can use the stock bracket.

Always Read All Product Page Details For More Important Fitment Information

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