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Old 01-04-2004, 01:31 PM
IWANTMOREHP's Avatar
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Question TBI Questions on a 93' Chevy FS 350

OK, so i'm new at this message board thing but i've got a couple questions about my truck so I think i'm gonna give it a try. Here we go: So i have a 1993 Chevy Silverado 2wd reg cab stepside. I've got it lowered at a belltech 4/6 drop nothin to crazy on custom stuff but right now, I'm more interested in more go than show. It came with a factory 305 but it had a cracked head so i decided i wanted more power so i went to the local motor head guy and had him build me a roller cam 350. Of course it was all stock specs but with a roller camshaft and i had it bored about 30 over (i think tha's how you say it). I left all the factory accessories on, factory intake, tbi unit. So it's just plainly a factory 350 but with a couple things done to it. I did put a set of Flowtech shorty headers on it and with complete straits with flomasters and an "H" pipe on it (no cat ). Then I put a K&N air filter on it just because it sounded cool at the time. I replaced the computer chip from a factory 305 chip to a 350 chip just so it would actually run a little bit smoother. I also replaced the factory 305 TBI unit with a junkyard 350 TBI unit that the guys said it was a decent one to use. I'm not having any problems with it, yet. I had the 700-r4 tranny rebuilt with a B&M shift improver kit and a 2200-2400 stall converter. NOW i can get down to my questions. The TBI unit appears to run perfect except for a little buzz at idol. Is the TBI unit supposed to buzz when at idol? If not, is there anything I can do about it? And is a TBI spacer do a good thing for it? Or do they make an OEM replacement for the TBI unit? Or what would be the best alternative to go to from tbi? (like the Holley Ram Jet FI? or the Accel DFI unit?) Thanks for listenin to that novel but i'd really appreciate it if I could have a couple opinions about it! Thanks again!

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Old 01-04-2004, 01:42 PM
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re X pipe....

sorry, wrong thread.

Last edited by crazy larry; 01-04-2004 at 01:48 PM.
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