Re: New Spark Setup! Any tips on Installation?
Quote:
Originally Posted by bigblockv6
I'm using R44XLS6 in my 478M which is one step hotter for 7500-8500 series trucks that came with this engine, though it's in my 68 3/4 ton 4wd pickup it should be fine, the heat range is just right for the 351E. I'm sure it could be cross linked to a step colder or hotter if need be. Funny thing is the plug is for a 90's 4 cylinder GM application and it has the correct 3/4 in reach for most GMC V6 application  |
You recommend colder or hotter for my 305?
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"Excuse the rust I use my truck"
1964 GMC 1500 305E/sm420 4 barrel intake mod and dual exhaust.
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1964 Chevy C20 292/SM420
1966 Chevy C10 292 hotrod 6/TKO600
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