Spark Plug Gap on a 75 with HEI
10-26-2002, 08:16 AM
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Spark Plug Gap on a 75 with HEI
I have a 75 Stingray and was wondering if anyone knew the spark plug gap for that year. I have an HEI which has the Pertronix Flamethrower rebuild kit on it!! I have Bosch Platinum plugs also!! Thanks in advance for any help!!
Joe :seeya
Joe :seeya
10-26-2002, 11:24 AM
#4
Team Owner
Re: Spark Plug Gap on a 75 with HEI (page62)
My '79 with stock HEI uses a .045 gap.
:cheers:
Olivier
10-26-2002, 12:43 PM
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Melting Slicks
Re: Spark Plug Gap on a 75 with HEI (GrandSportC3)
I had a '76 Olds Cutlass once and the gap was somewhere between .060 and .080!! So I would try .060.
10-26-2002, 12:53 PM
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Melting Slicks
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Re: Spark Plug Gap on a 75 with HEI (pws69)
The early HEI's specified a gap of .060", but they had problems with burning thru the rotors after a lot of miles, and the infamous red dust and frozen advance weights. So the later ones were changed to .045". That should work for you. Joe
10-28-2002, 03:46 PM
#7
Racer
Re: Spark Plug Gap on a 75 with HEI (joe73vette)
On my 75 I gap them @ .045" because of what joe73vette said, I also noticed that 1975 is the only year for that large of a gap, wonder why :rolleyes:
10-31-2002, 05:24 AM
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Le Mans Master
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Re: Spark Plug Gap on a 75 with HEI (stingraynick75)
If you look at GM's specs on CURRENT replacement chevy 350 motors with big cap HEI ... the spec is 0.045".
