92Bird

so i have enough money to lay the foundation for the motor..."block" ...but im just curious what type of aluminum heads should i use?

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1992 Pontiac Formula Firebird...saving up for that 383!

Korndogg

Afr.......

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Phate

I agree.

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strc09

AFR are good, but can get expensive. What kind of injection will you be running: TBI, TPI, carb? On my motor I'm running the 113 casting aluminum Corvette heads. They flow better than the stock cast iron heads. My only complaint is that I should have sucked up the extra money and had a little more done to them than I did. I'll be saving that for a later date though. In the end...it depends on what you're looking for as far as power numbers.

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-Patrick

GTA: Grand Turismo Americano (Grand Touring America)
1 of 930 1988 Gunmetal Metallic GTAs produced (RPO 87U)
See my CarDomain site: Code name: Vader
Built by Zeus Performance and tuned by PCM4Less
"Dream as if you'll live forever, live as if you'll die today." - James Dean

Korndogg

i paid $1600 for mine

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jester77

heads are one of the most important parts in making hp, so spend the money up front and get yourself some nice heads...

X3... AFR

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-94 Formula 383stroker,ps longtubes,tf heads,9inch w/ locker < lsx swap in '09
-94 Firebird for sale!!! or parts
-96 Blazer < lt1 transplant in '09

SpecialK

AFR X4

I have a set of "Mongoose" heads on my LS-1. These are some of the best flowing heads on the market for just about any engine.

Heads are your lungs, get the best breathing pair you can afford and your engine will thank you for it.

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23:23] blkIROC355: sometimes when i pee i make that sound the light sabers make
[23:23] SpecialK LS1: lmao
[23:23] blkIROC355: and play with the stream
[23:23] SpecialK LS1: that's just wrong

19Stroked89

AFR

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92Bird

ok sooo i did some research and you all convinced me to go with the afr heads...but im curious to know which set would you run with a gmc performance assembled block from summit, which intake manifold would you use ? and i think im going to go with a throttlebody injection system from year one... suggestions and incite is appreciated! thanks again! lol

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1992 Pontiac Formula Firebird...saving up for that 383!

joelster

What do you want to do with this car?

You could make a 550hp 383 that revs to 7500rpm, needs a 5000rpm stall converter and a monster cam---go with AFR 227's

You could make a 500hp 383 that revs to 7000rpm, needs a 4000rpm stall converter and a pretty stout cam---go with AFR 210's

You could make a 450-475hp 383 that revs to 6800rpm, needs a 3500/4000 stall converter and a noticeable cam---go with AFR 195's

YOU CAN'T GO WRONG with the new "Eliminator" line of heads from AFR. They pretty much eclipsed everything else out there. The only thing I would steer clear of from AFR is the full competition porting, which adds a LOT of money for marginal gains. All AFR heads are fully CNC'd, but the comp models have a finer cut put into the ports, and you will pay for that big time with your wallet.

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1994 Z28 Black heads/cam th350 drag car
1995 Z28 Teal 'Vert bolt-ons 6-speed cruiser