Aluminum Head Spark Plug
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Burning Brakes
Joined: Aug 2005
Posts: 751
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From: Lufkin Texas
Aluminum Head Spark Plug
Talked to the engine builder and he told me to use Bosch Platinum + 2 plugs. He said get them for an early 90's vette with the aluminum heads and they would work great with the engine. Anyone have any advice on plugs or a number I can use?
Safety Car
Joined: Oct 2004
Posts: 3,926
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From: Youngstown Ohio
For aluminum heads, both AFR and Trick Flow list AC FR3LS plugs as a starting point for correct heat range. These work perfectly for me. (AFR 195's, 383 sm. blk.) This number has been changed by AC Delco and is now listed as #41-629. (Same plug).
Drifting
Joined: Dec 2004
Posts: 1,345
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My engine builder recommended NGKs. They come in a virtually unlimited range of types. I will be running Iridium NGK's this year. The ones supplied with the engine have gone over 23,000 miles with no problems. My engine is a 10.67:1 CR SB, with Brodix -8 pro heads w/2.055" intakes, Comp Cams 294S cam (.560 intake lift w/1.6 ratio roller rockers), 2.5" Chevy exhaust manifolds, Victor Jr intake, and Holley 750 carb with a milled choke horn.
Thread Starter
Burning Brakes
Joined: Aug 2005
Posts: 751
Likes: 0
From: Lufkin Texas
Originally Posted by StickShiftCorvette
My engine builder recommended NGKs. They come in a virtually unlimited range of types. I will be running Iridium NGK's this year. The ones supplied with the engine have gone over 23,000 miles with no problems. My engine is a 10.67:1 CR SB, with Brodix -8 pro heads w/2.055" intakes, Comp Cams 294S cam (.560 intake lift w/1.6 ratio roller rockers), 2.5" Chevy exhaust manifolds, Victor Jr intake, and Holley 750 carb with a milled choke horn.
