Quote:
Originally Posted by FollowMyRuts
That's what I was saying, plus we're going to be running a Comp Cam Thumper cam that's going to make it rev up quicker. Thanks for the advise!
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Even the mildest "Thumper" cam for the 89 to 98 Chevy motors says in the install notes "Not for use with EFI applications" and are for originally roller camed morors
Any thing but a very mild cam that affects idle vacuum too much will require major retuning if it could be made to work smoothly at all. I would find a cam meant to work with the TBI.
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89 YJ EFI AMC 360, T18a, D20, built D44, 14 bolt, 38" Creepy Crawlers.
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