TBI Throttle Body Injection discussion and questions. L03/CFI tech and other performance enhancements.

My TBI on an L98 Block.

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Old Aug 4, 2002 | 06:29 PM
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My TBI on an L98 Block.

Do you guys think this would work at all. would i have to get a custom prom?
Old Aug 4, 2002 | 07:25 PM
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I'm not sure what kind of power it will make, but do a search for putting a 350 in. You should change the injectors, knock sensor, . . . .

Your TBI should make it run fine, but again don't expect it to have as much power as a L98 with TPI.
Old Aug 4, 2002 | 08:08 PM
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why oh why would you want to do that?
Old Aug 4, 2002 | 09:37 PM
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Thats what I'm doing. I've heard a cop chip from an 89 or so caprice is pretty close to what you need. They told me that chip would do good enough for what I've got in mind. (rebuilt L98 longblock, LT1 cam, Edelbrock TBI intake, Worked TBI, 350 injectors)

"why oh why would you want to do that?"

Because converting to TPI is expensive and time consuming if the car isn't already set up for it. Its my only car, I can't have it down for a week or 2 at a time. Plus, TBI is not as sucky of a system as everyone things. Its just hardly anyone ever uses it on a performance motor because its hardly ever been done before. So nobody ever expects much out of it.
Old Aug 4, 2002 | 09:41 PM
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ok, but why use a LT1 cam? its puny, if you have the engine apart do it right, but a bigger and better cam.
Old Aug 4, 2002 | 09:46 PM
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Engine: 350
Transmission: 700r4
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That '89 chip won't work in an '88 mind you.

I just bought an '89 TPI setup for a 305 off of ebay for $250, it's supposed to have everything I need(fingers crossed) and be in good condition(more fingers crossed).

I went to the store and checked prices on injectors for a 350 TBI, they are $120 for two I think I'll be better off just going TPI on my car(hopped up 305). Of course I have other cars to drive while I have that one in peices.
Old Aug 4, 2002 | 09:47 PM
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The reason I'm going with such a small cam is that this is my only car, so I'm not trying to build a wild *** motor, and the computer won't get freaked out by it. Plus they're cheap. I need cheap, I don't have much $$.
Old Aug 4, 2002 | 10:02 PM
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Originally posted by Keith5
I went to the store and checked prices on injectors for a 350 TBI, they are $120 for two I think I'll be better off just going TPI on my car(hopped up 305). Of course I have other cars to drive while I have that one in peices.
Dont know where you are but at the auto parts store I work at, TBI injectors are $120 each Canadian and TPI injectors are $80 each Canadian. Bottom fed injectors are usually cheaper than top fed injectors.
Old Aug 4, 2002 | 10:06 PM
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You could at least go with a ZZ4 cam. Theyre to be had pretty cheap too.

Last edited by 88 WS6 TransAm GTA; Aug 4, 2002 at 10:09 PM.
Old Aug 4, 2002 | 10:17 PM
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You must have a lot of time on your hands.
Old Aug 4, 2002 | 10:19 PM
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Its a joke. You know. Funny. Something to lighten the mood, something to laugh at.
Old Aug 4, 2002 | 10:20 PM
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Originally posted by 88 WS6 TransAm GTA
Its a joke. You know. Funny. Something to lighten the mood, something to laugh at.
its more fun just laughing at YOU!
Old Aug 4, 2002 | 10:37 PM
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I always take everything so seriously on these boards; I cant help it.:lala:
Old Aug 4, 2002 | 10:40 PM
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Originally posted by HrdRockA4305
. Its just hardly anyone ever uses it on a performance motor because its hardly ever been done before. So nobody ever expects much out of it.
Not true , just because it hasnt been posted on the internet doesnt mean that it hasnt happened. Since the inception of TBI there have been people modding it .
Old Aug 4, 2002 | 11:10 PM
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Originally posted by fly89gta


its more fun just laughing at YOU!
What ever you say frosty!
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