I recently got a '91 Firebird 305 V8 (TBI) and wanted to give it some more power. I was told the only worth while thing to do was to put in a 350 V8, which, if thats the case, I can't afford to do until next summer. I just wanted some input on what I can do to give it more power. The best things to add or change or whatever, in your opinions. Thanx.
-JT

 

This question gets asked all the time on this board. You can keep the 305 and do some mods that will help. The biggest problem with the 305 is breathing and exhaust. I would start with the exhaust. The cheapest would be a catback 2 1/2" to 3" system with a flowmaster mufler. If you want headers, the SLP's are the best, they are more expensive, but are made of stainless steel.

K&N filter, weather you are using the existing air cleaner or an open air cleaner.

Heads, get rid of those restrictive heads. World products makes a affordable iron head, the SR/Torquer, made for the 305.

The LT-1 cam is a popular choice on this board. If you replace your cam, make sure you get a Hydrollic Roller cam. That is what is in your car now. A 112 lobe center works well with the computer.

Check out the Tech Article on the Ultimate TBI, you'll want read that information.

If you plan to eventually put a 350 into your car, then I would be more cautious how much I spend on the 305. With a 350 you get alot more bang for the same dollar. In the end, no matter what people advise you on, you have to be happy with what you decide (305 or 350).

I am currently planning a swap to a 350 and that is why in my signiture you don't any mods to the engine. I am trying to get everything else in place before doing the swap.

That is a very fast response, hope that helps.

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1990 RS Camaro 305 TBI 700R4 Tranny
3" cat back system with flowmaster muffler
Edelbrock strut brace tower and rear panhard bar
Spohn subframe conectors and lower control arms
all polyurithene bushing under the car
March underdrive pully system
K&N air filter
Hypertech chip
Aluminum driveshaft
3.42 posi rearend
Killer sound system
Many new mods to come

 

do a search.

 

1. Open element air cleaner
2. v6 rear axle (3.42 gears)
3. posi for the axle
4. full exaust
5......

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-Tas
'89 Formula WS-6

305, TBI, auto, 14x3 chrome flat based open element with K&N, Milodon 160* thermo, functional Formula hood, cross-flow Flowmaster, '99z28 rear pipes and tips....

To be installed eventually far far far into the future: Yours if the price is right and I don't have to ship :
Hooker 1-5/8" 50 state legal headers, Dynomax 3" I pipe (PN 44063 and 43248), Catco 3" cat, and injector spacer.

Super GRK_Taz World
F-Body Dual Exaust
EFI & Intake Options
AOL IM: superGRtaz