Re: 1968 C10 5.3 swap, the easy way.
Well its kinda confusing. My new intake is a GEN IV cathedral style head intake. Used on TBSS and all 5.3 and 4.8's. They look much different from the gen3 style and some testing has shown them to make more power than a LS6 intake. Ive read many conflicting tests though. I got mine cheap and wanted to upgrade to the 90mm DBW. It was easy to put a GTO DBW throttle body on mine due to the old style dbw I used(00-02). Same as the corvette. newer 2003-2007 DBW you need a 250$ signal modifer to get a gto throttle body to use.
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