305 switching tbi heads on 92 firebird
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Car: 1993GMC suburban1992Pontiacfirebird
Engine: 350, 305
Transmission: 4L60-E 4L60
305 switching tbi heads on 92 firebird
I got a 305 tbi, can vortec heads from a 305 or 350 fit on my 92 firebird??
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Car: 84 TA orig. 305 LG4 "H" E4ME
Engine: 334 SBC - stroked 305 M4ME Q-Jet
Transmission: upgraded 700R4 3200 stall
Axle/Gears: 10bolt 4.10 Posi w Lakewood TA Bars
Re: 305 switching tbi heads on 92 firebird
#3
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Re: 305 switching tbi heads on 92 firebird
he is correct and the 305tbi is already at something like 8.5.1 compression ratios. that's a dud. vortec heads are a great upgrade but then you have to change the intake manifold as well. a set of stock vortec heads are fairly affordable but by the time you buy a manifold as well you could almost buy a better set of heads made for the 305. 175-180cc heads are good for a 305. the set im looking at have a 56cc combustion chambers that will raise the compression ration closer to 9.5.1. the better heads and increase in compression will be power you can feel.
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Car: 89 Firebird
Engine: 355 TBI
Transmission: 700R4
Axle/Gears: 10 Bolt.Posi-3.73s
Re: 305 switching tbi heads on 92 firebird
305 TBI cars are at 9:3 or 9:5 compression stock. Big upgrade to go with 305 Vortec heads and a carb Vortec intake can be bought cheap as well as an adapter to use your TBI with it. Still won't be a rocket id be looking for a 350 if I was wanting to make power.
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Car: '91 RS vert
Engine: mild TBI 305
Axle/Gears: 3.43 pos
Re: 305 switching tbi heads on 92 firebird
Any head part numbers or truck/car years to look for these 305 Vortec heads? A true bolt on with the right manifold?
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Car: 1988 Trans Am
Engine: L03
Transmission: 700R4
Axle/Gears: 10 Bolt 2.73 Open
Re: 305 switching tbi heads on 92 firebird
L30 heads are 12558059 I believe.
1996 - 2000? I'm not certain what year production ended.
1996 - 2000? I'm not certain what year production ended.
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