Thread: 1990 chey pick up 4x4

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ok ? it the 500 lift thats is not going to get you a trouble . you still have to trick the map ?? .you can bolt a carb on it to . all i am saying is the STOCK TBI will not take a big cam you know were the lc and 050 numbers .he ask whats wrong i said it will not take much cam . a chip may not help if the cam is way off. yep and i built TBI roller cam. ERSON cam ground a custom roller for me on this build .on the vin code letter on some of the TBI in trucks that need to idle at a very low idle like under 600 rpm from what i have been told there not much help with them .so i was not going to ram heads with Erson cam and some other guys i ask . so he better know what he has. i know a guy that pick up a crate tpi engine for his truck good deal ... i rebuilt his old engine as the tpi cam would not work. very poor idle blowing black smoke out the pipes. the TBI it self can work but how much after market parts is he going to need to make it work?? any way he go,s i still like to know how it works. i know what your telling me .all i saying is i done TBI.s the guys i built engines for did not want to buy after market parts so i used smaller cams that work