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Re: SparkPlugs in a 4x4
well?? im running autolite 24's in mine. also running Eddie's rpm oval ports and their 3551 system. plugs seem to be the right heat range with 9.4 compression and short duration cam. 218/226, 510/510, 112 lsa. -steve
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Steve
1971 GMC Longbox. Full Roller Stroker 489 w/ FiTech EFI, Chris Straub Cam/NV4500/205/D60/14B w. Grizzly Locker and 4.11's. 2" Lift on 33's
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