If so what kind and how much¿

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89 Formula Firebird
Red with T-tops
5.0 305 FI
Soon to be a 400sb or 350.

 

you might pick up a small amount of power, but you still have crappy heads and cam so it wouldnt be worth the trouble

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*1989 RS
*Red, Daytona Turbo fiberglass hood, chrome 16x8 IROC wheels
*355 CID
*TPI ported plenum, SLP siamesed runners, Edelbrock high flow intake
*SLP 1 and 3/4 headers with 3 inch catback
*Richmond 3.73, Auburn Posi
*Modded 700-R4, 2800 stall converter
*eibach pro kit and hotchkis sturt tower brace

"There is no way you have a 350 in that car. They are made to have 305's and a 350 wouldnt fit"
-local parts store genius-

 

Krap.

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89 Formula Firebird
Red with T-tops
5.0 305 FI
Soon to be a 400sb or 350.

 

I'll second cobrakiller's opinion.

-Mark W.
'88 SC Camaro w/ 305 TBI

 

The answer is no. you wont. a bigger tbi without any other mods will just confuse your ecm and you will start running lean at wot, causing knock, making your ecm retard the timing slowing you down. not to mention the off idle acceleration lag from having too much air rush into the engine without having the correct pumpshot settings in your chip to compensate for the larger bore dia.

So, stick with your regular tbi until your other mods have pushed you up to 230hp. (l03)
Then you can think about doing your own chips and getting a bigger tbi.

 

How do you know that it does all that?

 

Yeah I guess what I need to a cam, heads rocker arms ,computer chip with that and things of that such. I was looking for something to bolt on but once again the car takes all my cash from me, thief.

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89 Formula Firebird
Red with T-tops
5.0 305 FI
Soon to be a 400sb or 350.

 

i know from firsthand experience, back when i was a newbie.