Some say the Autolite is the best made plug going...
spark plugs
Team Owner
Joined: Mar 2003
Posts: 26,118
Likes: 1,874
From: Greenville, Indiana
Use AC R45 or equivalent.
Or, you can try AC R45S. It's been reported on some engines, the extended tip of the "S" plug will hit the piston. I run the "S" plug in an engine similar to yours without any problem.
Or, you can try AC R45S. It's been reported on some engines, the extended tip of the "S" plug will hit the piston. I run the "S" plug in an engine similar to yours without any problem.
Race Director
Joined: Nov 2002
Posts: 12,142
Likes: 54
From: Taylor Michigan
The 'S' suffix problem I had was on my 315 hp 61 piece. You should not have any problems with a 64 FI piece. Do not use a colder heat range than the 45....You may be prompted to use a R43 as the correct plug, it`s not! Unless racing it has a tendency fuel foul with normal or low speed driving.....But if you want experience in changing spark plugs with a FI Vette with all that protective crap and air cleaner use something else than Mike recommended ....
welcome to the FI world....{hint} they need to be driven and not set around in a garage or on a trailer
welcome to the FI world....{hint} they need to be driven and not set around in a garage or on a trailer
Drifting
Joined: Apr 2004
Posts: 1,303
Likes: 36
From: Allen Park Mi
Race Director
Joined: Nov 2002
Posts: 12,142
Likes: 54
From: Taylor Michigan
.stop around AA..oh did you know there is a 'Michigan Ave Cruise Saturday?
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