Taylor Cable 74628 8mm Spiro-Pro Custom Spark Plug Wires 8 cyl blue

Taylor Cable 74628 8mm Spiro-Pro Custom Spark Plug Wires 8 cyl blue

Part Number: 74628 / UPC 088197746284
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Features & Benefits

  • 350 ohms per foot
  • 8.0mm Outer Silicone Jacket
  • Silicone inner core provides added heat protection and superior flexibility throughout its lifetime
  • Highly conductive stainless steel spiral wound core
  • Superior RFI / EMI suppression for applications with CD or electronic ignitions, on board computers, stereos, or pit radios

Custom Spark Plug Wire Sets are duplicates of your OE wire set. Each wire is cut to length and booted to match your original wires. 8mm Spiro Pro Wire is the top choice of racers and enthusiasts due to its affordable value and overall high-performance features. Spiro Pro 8mm or 10.9mm wires feature 350 ohms per foot with the signature Taylor Cable boot for the street or the track.


For over 90 years, Taylor Cable Products have been the top choice of racers and enthusiasts for its value and high-performance features. Taylor Cable is an icon of quality and customer satisfaction in the automotive performance and racing markets. We are proud to have our Ignition Wire Sets firing some of the fastest race and street vehicles in the world.

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

Taylor Cable 74628 8mm Spiro-Pro Custom Spark Plug Wires 8 cyl blue

Taylor Cable 74628 8mm Spiro-Pro Custom Spark Plug Wires 8 cyl blue

Part Number: 74628 / UPC 088197746284
Regular price $86.95
Sale price $86.95 Regular price

Part Number: 74628 / UPC 088197746284
View All Vehicle Applications

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
Emissions code

Emissions Code

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Complete Your Installation

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Features & Benefits

  • 350 ohms per foot
  • 8.0mm Outer Silicone Jacket
  • Silicone inner core provides added heat protection and superior flexibility throughout its lifetime
  • Highly conductive stainless steel spiral wound core
  • Superior RFI / EMI suppression for applications with CD or electronic ignitions, on board computers, stereos, or pit radios

Custom Spark Plug Wire Sets are duplicates of your OE wire set. Each wire is cut to length and booted to match your original wires. 8mm Spiro Pro Wire is the top choice of racers and enthusiasts due to its affordable value and overall high-performance features. Spiro Pro 8mm or 10.9mm wires feature 350 ohms per foot with the signature Taylor Cable boot for the street or the track.


For over 90 years, Taylor Cable Products have been the top choice of racers and enthusiasts for its value and high-performance features. Taylor Cable is an icon of quality and customer satisfaction in the automotive performance and racing markets. We are proud to have our Ignition Wire Sets firing some of the fastest race and street vehicles in the world.

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 1987 Chevrolet Blazer
Engine Type V8
Engine Size(s) Liters: 5.0, 5.7
Cubic Inches: 305, 350
Notes

Year / Make / Model 1988-1989 Chevrolet C1500
Engine Type V8
Engine Size(s) Liters: 5.0, 5.7
Cubic Inches: 305, 350
Notes

Year / Make / Model 1994-1995 Chevrolet C1500
Engine Type V8
Engine Size(s) Liters: 5.0, 5.7
Cubic Inches: 305, 350
Notes

Year / Make / Model 1990-1993 Chevrolet C1500 Cheyenne
Engine Type V8
Engine Size(s) Liters: 5.0, 5.7
Cubic Inches: 305, 350
Notes

Year / Make / Model 1990-1993 Chevrolet C1500 Silverado
Engine Type V8
Engine Size(s) Liters: 5.0, 5.7
Cubic Inches: 305, 350
Notes

Year / Make / Model 1990-1993 Chevrolet C1500 WT
Engine Type V8
Engine Size(s) Liters: 5.0, 5.7
Cubic Inches: 305, 350
Notes

Year / Make / Model 1990-1992 Chevrolet C1500 Scottsdale
Engine Type V8
Engine Size(s) Liters: 5.0, 5.7
Cubic Inches: 305, 350
Notes

Year / Make / Model 1988-1995 Chevrolet C2500
Engine Type V8
Engine Size(s) Liters: 5.0
Cubic Inches: 305
Notes

Year / Make / Model 1988-1991 Chevrolet C2500
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1994-1995 Chevrolet C2500
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1992-1993 Chevrolet C2500
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1988-1995 Chevrolet C3500
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1987-1993 Chevrolet G10
Engine Type V8
Engine Size(s) Liters: 5.0, 5.7
Cubic Inches: 305, 350
Notes

Year / Make / Model 1987-1993 Chevrolet G20
Engine Type V8
Engine Size(s) Liters: 5.0, 5.7
Cubic Inches: 305, 350
Notes

Year / Make / Model 1987-1988 Chevrolet G30 Hi-Cube
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1987-1988 Chevrolet G30 Beauville
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1987-1988 Chevrolet G30 Sportvan
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1987-1988 Chevrolet G30 Chevy Van
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1989-1993 Chevrolet G30 Sportvan
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1989-1993 Chevrolet G30 Hi-Cube
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1989-1993 Chevrolet G30 Beauville
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1989-1993 Chevrolet G30 Chevy Van
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1988-1995 Chevrolet K1500
Engine Type V8
Engine Size(s) Liters: 5.0, 5.7
Cubic Inches: 305, 350
Notes

Year / Make / Model 1988-1995 Chevrolet K2500
Engine Type V8
Engine Size(s) Liters: 5.0
Cubic Inches: 305
Notes

Year / Make / Model 1988-1991 Chevrolet K2500
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1994-1995 Chevrolet K2500
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1992-1993 Chevrolet K2500
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1988-1995 Chevrolet K3500
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1987 Chevrolet P20
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1988-1989 Chevrolet P20
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1987-1988 Chevrolet P30
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1989 Chevrolet P30
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1991-1993 Chevrolet P30
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1990 Chevrolet P30 Step-Van
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1990 Chevrolet P30 Base
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1987 Chevrolet R10
Engine Type V8
Engine Size(s) Liters: 5.0, 5.7
Cubic Inches: 305, 350
Notes

Year / Make / Model 1987 Chevrolet R10 Suburban
Engine Type V8
Engine Size(s) Liters: 5.0, 5.7
Cubic Inches: 305, 350
Notes

Year / Make / Model 1987 Chevrolet R20
Engine Type V8
Engine Size(s) Liters: 5.0, 5.7
Cubic Inches: 305, 350
Notes

Year / Make / Model 1988 Chevrolet R20 Scottsdale
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1988 Chevrolet R20 Custom Deluxe
Engine Type V8
Engine Size(s) Liters: 5.0, 5.7
Cubic Inches: 305, 350
Notes

Year / Make / Model 1988 Chevrolet R20 Cheyenne
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1988 Chevrolet R20 Silverado
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1987 Chevrolet R20 Suburban
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1989 Chevrolet R2500 Silverado
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1987 Chevrolet R30
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1988 Chevrolet R30 Cheyenne
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1988 Chevrolet R30 Custom Deluxe
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1988 Chevrolet R30 Scottsdale
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1988 Chevrolet R30 Silverado
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1989-1991 Chevrolet R3500
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1987 Chevrolet V10
Engine Type V8
Engine Size(s) Liters: 5.0, 5.7
Cubic Inches: 305, 350
Notes

Year / Make / Model 1987 Chevrolet V10 Suburban
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1987 Chevrolet V20
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1987 Chevrolet V20 Suburban
Engine Type V8
Engine Size(s) Liters: 5.7, 7.4
Cubic Inches: 350, 454
Notes

Year / Make / Model 1987-1988 Chevrolet V30
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1989-1991 Chevrolet V3500
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1988-1995 GMC C1500
Engine Type V8
Engine Size(s) Liters: 5.0, 5.7
Cubic Inches: 305, 350
Notes

Year / Make / Model 1988-1993 GMC C2500
Engine Type V8
Engine Size(s) Liters: 5.0
Cubic Inches: 305
Notes

Year / Make / Model 1988-1991 GMC C2500
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1992-1993 GMC C2500
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1994-1995 GMC C2500 Sierra SL
Engine Type V8
Engine Size(s) Liters: 5.0, 5.7
Cubic Inches: 305, 350
Notes

Year / Make / Model 1994-1995 GMC C2500 Sierra SLE
Engine Type V8
Engine Size(s) Liters: 5.0, 5.7
Cubic Inches: 305, 350
Notes

Year / Make / Model 1994-1995 GMC C2500 Sierra SLT
Engine Type V8
Engine Size(s) Liters: 5.0, 5.7
Cubic Inches: 305, 350
Notes

Year / Make / Model 1988-1995 GMC C3500
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1988-1995 GMC K1500
Engine Type V8
Engine Size(s) Liters: 5.0, 5.7
Cubic Inches: 305, 350
Notes

Year / Make / Model 1988-1993 GMC K2500
Engine Type V8
Engine Size(s) Liters: 5.0
Cubic Inches: 305
Notes

Year / Make / Model 1988-1991 GMC K2500
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1992-1993 GMC K2500
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1994-1995 GMC K2500 Sierra SL
Engine Type V8
Engine Size(s) Liters: 5.0, 5.7
Cubic Inches: 305, 350
Notes

Year / Make / Model 1994-1995 GMC K2500 Sierra SLT
Engine Type V8
Engine Size(s) Liters: 5.0, 5.7
Cubic Inches: 305, 350
Notes

Year / Make / Model 1994-1995 GMC K2500 Sierra SLE
Engine Type V8
Engine Size(s) Liters: 5.0, 5.7
Cubic Inches: 305, 350
Notes

Year / Make / Model 1988-1995 GMC K3500
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1987 GMC R1500 Suburban
Engine Type V8
Engine Size(s) Liters: 5.0, 5.7
Cubic Inches: 305, 350
Notes

Year / Make / Model 1987-1989 GMC R2500
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1987 GMC R2500
Engine Type V8
Engine Size(s) Liters: 5.0
Cubic Inches: 305
Notes

Year / Make / Model 1987 GMC R2500 Suburban
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1987-1988 GMC R3500
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1989-1991 GMC R3500
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1987 GMC V1500 Suburban
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1987 GMC V2500 Suburban
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1987-1988 GMC V3500
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1989-1991 GMC V3500
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1987-1993 GMC G1500
Engine Type V8
Engine Size(s) Liters: 5.0, 5.7
Cubic Inches: 305, 350
Notes

Year / Make / Model 1987-1993 GMC G2500
Engine Type V8
Engine Size(s) Liters: 5.0, 5.7
Cubic Inches: 305, 350
Notes

Year / Make / Model 1987-1988 GMC G3500 Magnavan
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1987-1988 GMC G3500 Rally
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1987-1988 GMC G3500 Vandura
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1987-1988 GMC G3500 Rally Camper Special
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1987-1988 GMC G3500 Rally STX
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1987-1988 GMC G3500 Vandura Special
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1989-1993 GMC G3500 Rally
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1989-1993 GMC G3500 Vandura Special
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1989-1993 GMC G3500 Rally Camper Special
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1989-1993 GMC G3500 Magnavan
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1989-1993 GMC G3500 Rally STX
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1989-1993 GMC G3500 Vandura
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1987 GMC Jimmy
Engine Type V8
Engine Size(s) Liters: 5.0, 5.7
Cubic Inches: 305, 350
Notes

Year / Make / Model 1988-1989 GMC P2500
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1987-1988 GMC P3500
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1989 GMC P3500
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1991-1993 GMC P3500
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1990 GMC P3500 Value Van
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1990 GMC P3500 Base
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

Year / Make / Model 1987 GMC R1500
Engine Type V8
Engine Size(s) Liters: 5.0, 5.7
Cubic Inches: 305, 350
Notes

Year / Make / Model 1987 GMC V1500
Engine Type V8
Engine Size(s) Liters: 5.0, 5.7
Cubic Inches: 305, 350
Notes

Year / Make / Model 1987 GMC V2500
Engine Type V8
Engine Size(s) Liters: 5.7
Cubic Inches: 350
Notes

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