Bill Smith
Founder, 1929-2014
Speedy Bill
Since 1952
Speedway Motors Logo
America's Oldest Speed Shop ®

Search

MSD 31329 8.5mm Spark Plug Wires Set, Small Block Ford, HEI Cap

SAME DAY SHIPPING! Most orders ship within 24 hours.

Specs
Color:
Red
Sold in Quantity:
Set
Cap Terminal Style:
HEI / Male
Diameter:
8.5
Resistance:
50
MFG. Part #:
31329
Spark Plug Boot Ends:
Multi Angle
Conductor Style:
Spiral Core
RFI Suppression:
Yes
Coil Wire Included:
Yes
Garage Sale:
No
MSD 31329 8.5mm Spark Plug Wires Set, Small Block Ford, HEI Cap
MSD 31329 8.5mm Spark Plug Wires Set, Small Block Ford, HEI Cap
MSD 31329 8.5mm Spark Plug Wires Set, Small Block Ford, HEI Cap

Click image to enlarge

Please NOTE the following about this product:

  • This item is sold as a set.

Details

Reviews

Q & A

What's in the Box

Wires feature 'straight' boots with 90 degree boots on the ignition end. 

The MSD 8.5mm Super Conductor Wire is "the" performance wire. Engineered from the inside out, the 8.5 offers everything you have ever wanted in a wire; incredibly low resistance without electronic interference! In a single 12 inch of low resistance wire there is only 40-50 ohms of resistance! That is the lowest resistance of any helically wound wire.

MSD uses a copper alloy conductor due to it's great voltage carrying capabilities. The low resistance results in less loss in spark energy so more reaches the spark plug. The conductor is wound extremely tight around a special center core. There is over 40 ft of conductor wrapped into a 1 ft of plug wire. This winding procedure, with a ferro-magnetic impregnated center core, produces an extremely effective Electro Magnetic Interference (EMI) "choke". This suppression capability keeps the EMI inside the wire where it cannot interfere with other electronics. The sleeve surrounding the conductor assembly is just as impressive. A proprietary blend of silicone and synthetic material produce a sleeve that is highly resistant to high heat as well as abrasion and tears.

Learn how to properly attach new spark plug terminals and boots by reading our tech article. How to Install Spark Plug Wire Ends.

MSD Rebate (Link)

Item Details

HEI style cap - red

Customer Reviews

This product has no reviews.

Product Q&A

4 questions : 5 answers

2 answers

To clarity, are the boots are already connected at both ends or do I need to crimp them on myself?

mpclado
August 04, 2014

To clarity, are the boots are already connected at both ends or do I need to crimp them on myself?

Answers

March 12, 2015
surferjoe
the wires are ready to install on the plug end but, yes you will need to cut and crimp on the cap end.
August 04, 2014
EricM
Yes this plug wire set is crimped on both ends and are ready to install.
1 answers

Are these already cut to fit or do I cut them to fit?

Clay
July 16, 2013

Are these already cut to fit or do I cut them to fit?

Answers

July 16, 2013
Jason
These MSD HEI small block ford plug wires come assembled, already cut to length.
1 answers

Is the plug end 90 degree?

Chris
Clayton, GA
December 11, 2011

Is the plug end 90 degree?

Answers

December 12, 2011
Jason
The cap end is 90 degree and plug end is straight
1 answers

length of shortest wire

August 30, 2011

length of shortest wire

Answers

August 31, 2011
Jason
The shortest wire is 23" long. Also includes lengths of 24", 25", 28", 31", 34" and two at 37". Coil wire is 25"
Page 1 of 1

You may also be interested in:

Spark Plug Boot Protectors, Set/8
(Part #6982524)
                        Spark plug protector eliminates that melted boot problem! Heat treated fiberglass, universal size fits most boots - even 90°. Protects up to 1200°. Non-flammable, non-reactive to petroleum products and resists water and fungus. Overall length is 6.25".
                    
Accel 8021 8.8 Spiral Core Spark Plug Wires, HEI, 90 Degree Boot
(Part #1058021)
                        

Makes power, not static.  With today's mega-watt, ultra-sensitive car stereo systems, that means "hiss-free" high fidelity. Thanks to a special graphite-impregnated fiberglass conductor, ACCEL 8.8 wire has the structural integrity to handle the high performance that can cause other wires to self-destruct.  Yellow only.

  • Rated to 550 degrees F
  • 8.8mm yellow high temp silicone jacket
  • For race and street applications
  • 500 ohm/ft. RFI suppression
  • Red plug boots

Learn how to properly attach new spark plug terminals and boots by reading our tech article. How to Install Spark Plug Wire Ends.

MSD 8843 Spark Plug Wire Separators, Pro-Clamp
(Part #5478843)
                        

Separate your plug wires to keep them from arcing across one another with these MSD Pro-Clamp wire separators.

Set is supplied with two 4-wire, two 3-wire, and four 2-wire separators.

MSD Rebate (Link)