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#26 |
Burnouts are therapeutic
Join Date: Jun 2007
Location: lancaster, south carolina
Posts: 852
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Re: HEI Plug Wires
I plan on using these msd streetfire wires on mine ,they are for a 76 vette. My truck has hei and ram horns and I want to route them through the motor mounts so I'm hoping these will work.
I put them on the pontiac I have and they were easy to install and came with the sparkplug end already done. http://www.oreillyauto.com/site/c/de...815P&ppt=C0334
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1969 CHEVELLE SS 1972 C10 ALMOST DAILY DRIVER 1968 C10 RUSTBUCKET (MISSION IMPOSSIBLE) 1972 PONTIAC LEMANS CONVERTIBLE (WIFE'S CAR) "My wife and I were happy for twenty years. Then we met." - Rodney Dangerfield "The difference between genius and stupidity is that genius has its limits." - Einstein |
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#27 |
Registered User
![]() Join Date: Dec 2011
Location: Hope Mills, NC
Posts: 62
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Re: HEI Plug Wires
I am in the middle of converting a 72 to HEI. I bought a set of wires for a 76 Corvette. I will do the conversion tomorrow and let you know how it goes. The initial look at the wires looks good.
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#28 |
Registered User
![]() Join Date: Dec 2011
Location: Hope Mills, NC
Posts: 62
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Re: HEI Plug Wires
The wires went on easily, even through the mounts. Worked like clockwork.
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#29 |
Burnouts are therapeutic
Join Date: Jun 2007
Location: lancaster, south carolina
Posts: 852
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Re: HEI Plug Wires
were any of the wires too long?
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1969 CHEVELLE SS 1972 C10 ALMOST DAILY DRIVER 1968 C10 RUSTBUCKET (MISSION IMPOSSIBLE) 1972 PONTIAC LEMANS CONVERTIBLE (WIFE'S CAR) "My wife and I were happy for twenty years. Then we met." - Rodney Dangerfield "The difference between genius and stupidity is that genius has its limits." - Einstein |
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#30 |
Registered User
Join Date: Jun 2010
Location: Upland Ca
Posts: 4,143
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Re: HEI Plug Wires
75 and up vette for HEI, 74-63 for points and coil type ignition. All years vette wires are the same length so don't get hung up on the year to much, just decide on HEI or non HEI.
The reason a few of the wires are to long is the vettes had an elaborate shielding system that swings way down low by the pan and up the backside though more chrome shielding, up and under more shielding that covers the distributer. It takes some extra inches to go though all that shielding. If a few are to long for your application just shorten then up a little. If you have a few that are two short they are in the wrong position. A few dollars for the ends, about 45 seconds a wire and your done. Once you do a few you will probably buy only cut to fit sets in the future. The last three or for I have done are from MSD bulk wire, ends, and boots.
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1972 C10 SWB, Air, PS, PB, 350/350THM. Second owner. 1965 Corvette roadster, 44K miles, 327/365 SHP, 4 speed, side exhaust, knockoffs, teak, second owner (bought in 1970), Have ALL numbers matching components. My frame off restoration thread: http://67-72chevytrucks.com/vboard/s...d.php?t=556703 |
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#31 |
Registered User
![]() Join Date: Dec 2011
Location: Hope Mills, NC
Posts: 62
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Re: HEI Plug Wires
The longest two wires could've been a few inches shorter, but I will shorten them later.
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#32 | |
Registered User
Join Date: Dec 2010
Location: Apison Tn
Posts: 490
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Re: HEI Plug Wires
Quote:
Posted via Mobile Device
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http://67-72chevytrucks.com/vboard/s...d.php?t=438550 ![]() ![]() 1994 Buick Roadmaster 1994 GMC Sonoma |
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#33 |
Registered User
![]() Join Date: Oct 2012
Location: Cumming GA
Posts: 613
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Re: HEI Plug Wires
To assist others down the road, I figured I would add to this older post. I just replaced my incorrect over the valve cover spark plug wires with correct under the exhaust manifold wires on my 70 350 4x4 with HEI.
I used ACDelco spark plug wire set 9088S. Black, 8mm, 90 degree boots. I measured the lengths and ran them to the following cylinder plugs - 1: 48”, 2: 56”, 3: 56” 4: 44”, 5: 29” 6: 29”, 7: 22”, 8: 27”. Note 1: I ran plug wires 1\3 through the driver side engine mount and 2\4 through the passenger side engine mount. I couldn't find any drawings that show this, but I have seen some other forum guys do it and with the above lengths I needed to. A little grease and the boots slipped through easier than I thought they would. Note 2: 1\3 and 2\4 use the duel wire retainer by the heat shield but 5\7 and 6\8 do not.....see drawings. With these lengths 5\7 could use a duel wire retainer by the heat shield but 6\8 couldn't........I do have them installed there thinking 4x duel retainers were used, but it looks like only 2 were correct. Note 3: 1\3 and 2\4 also use the duel wire clips that mount to oil pan bolts on each side....hard to determine from drawings, but I have seen other guys use them and I think they help. Note 4: Based on my install, wires 2\4 are a couple inches longer than needed, but I was able to get a good setup adjusting at the retainers. Hope this helps somebody, Jim |
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#34 |
Registered User
Join Date: Aug 2018
Location: Salt Lake City, Utah
Posts: 52
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Re: HEI Plug Wires
Installed my plug wires (for 76 Vette, NAPA Belden Premium 8mm) and plugs Delco R45TS gapped at .045, per this thread... Especially from Sapper, LeeH and JimH. MUCH THANKS!!!! My big girl is purring like a kitten. You prevented a lot of frustration with auto parts store employees that are either not knowledgeable or helpful about our trucks. #c10life
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#35 |
Senior Member
![]() Join Date: Apr 2016
Location: Cypress, TX
Posts: 3,696
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Re: HEI Plug Wires
Suppose I have ACDelco spark plug wire set 9088S or similar that has the rubber buttons on top of the distributor ends of the wires.
And a typical distributor cap such as ACDelco D336X. Is there a different distributor cap or a coil cover that engages with those rubber buttons on the wires? Can anybody tell what a GM or ACDelco part number is? What is the correct part of the distributor for that type of wire? |
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#36 | |
Who Changed This?
![]() Join Date: Jan 2013
Location: Simi Valley, CA
Posts: 10,388
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Re: HEI Plug Wires
Quote:
https://www.ebay.com/p/81213-Allstar...yABEgJ5kvD_BwE
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~Steven '70 Chevy 3/4T Longhorn CST 402/400/3.56 Custom Camper Simi Valley, CA |
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#37 |
Registered User
Join Date: Jan 2005
Location: CA
Posts: 411
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Re: HEI Plug Wires
Sorry to resurrect an old thread, but, I see that GMC Pauls sells the wire loom support brackets needed to route the wires like this, but does anyone know where to find the bolts for the wire loom supports? Or what thread they would be? I'm trying to do this on a greasy old truck with not a lot of wiggle room, figuring out what bolts are needed sounds like a PIA...?
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#38 |
Registered User
Join Date: Aug 2018
Location: Lincoln,AR
Posts: 9
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Re: HEI Plug Wires
I don’t remember the size off hand, someone else may know. But I just rebuilt mine and I bought the holders from lmc and they had the bolts and washer as well. Part number 30-0780. They’re only 45˘ but shipping would be stupid. But may be worth calling them and asking the size, then get from your local hardware store.
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#39 |
Registered User
Join Date: Jan 2005
Location: CA
Posts: 411
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Re: HEI Plug Wires
Right on, did you run yours stock/corvette style under the manifolds?
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#40 |
Registered User
Join Date: Aug 2018
Location: Lincoln,AR
Posts: 9
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Re: HEI Plug Wires
yup. They worked pretty good. There’s one or two that could be a hair longer, and a couple a hair shorter. When the time comes to change I’m gonna go with the make your own just so I can get them just perfect. But they do work, even with shorty headers.
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#41 |
Registered User
Join Date: Aug 2018
Location: Lincoln,AR
Posts: 9
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Re: HEI Plug Wires
yup. They worked pretty good. There’s one or two that could be a hair longer, and a couple a hair shorter. When the time comes to change I’m gonna go with the make your own just so I can get them just perfect. But they do work, even with shorty headers.
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#42 |
Registered User
Join Date: Jan 2005
Location: CA
Posts: 411
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Re: HEI Plug Wires
Thanks for that. Your motor looks real nice bris
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#43 |
Registered User
Join Date: Dec 2001
Location: harvard, il. USA
Posts: 389
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Re: HEI Plug Wires
Old thread but helps me today.
Thanks to all who participate in this forum...Don. |
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#44 | |
Senior Member
![]() Join Date: Dec 2011
Location: Moraga, CA
Posts: 812
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Re: HEI Plug Wires
I know it's an old post, but I just wanted to say that I really appreciate the detailed documentation in this that included the wire lengths, locations, and part numbers. It helps a lot. Thanks, JimH!
Quote:
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(Very) Slow-Going Build Thread: Stock 1970 Short Step with Stock 1970 LT-1 http://67-72chevytrucks.com/vboard/s...d.php?t=567340 |
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