V6 Discussion and questions about the base carbureted or MPFI V6's and the rare SFI Turbo V6.

v6 aluminum heads

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Old Jul 11, 2004 | 06:16 PM
  #1  
84tagoin81's Avatar
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v6 aluminum heads

v6 almunium heads? iml looking to get more hp and higher compression. im wondering if i can put a set of heads like these on my 2.8 v6 its an 84 block, it has alot of other work done to it but heads are stock, http://cgi.ebay.com/ebaymotors/ws/eB...category=33617

they should fit right since its the same size block, or are the blot patterns diffrent? and if it would match up what could i excpect anything good or not worth the effort?
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Old Jul 11, 2004 | 08:22 PM
  #2  
Doward's Avatar
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From: Gainesville, FL
Car: 1988 Chevy Camaro Hardtop
Engine: Turbocharged/Intercooled 3.1
Transmission: World Class T5 5 Speed
Negative - those are FWD 60ē heads, with a 26cc combustion chamber (compared to 50cc for the iron heads)

In other words - the compression would be INSANELY high. Probably like 13:1 (too lazy to calc it right now )

Would also require a new (custom) intake.
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Old Jul 11, 2004 | 09:27 PM
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84tagoin81's Avatar
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so no aluminum heads for my 60 ey ? i have the edelbrock intake with the high rise setup with a holley 390 4bbl carb.
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Old Jul 12, 2004 | 08:30 AM
  #4  
oil pan 4's Avatar
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From: High plains of NM
Car: 89 Firebird
Engine: L98
Transmission: T-56
Axle/Gears: 3.73
I have seen people with those heads they end up running about a 12:1 c/r and they use a modified fwd intake and I don't know what they do for exhaust manifolds.
It usaly ends up being a huge pain in the @$$.
If you want normaler c/r tare down your engine and use the fwd pistons.
The intake and exhaust ports are differently spaced between the iron and Al types.
the iron look like 0_0__0 ,uneven
the Al ones look like 0_0_0 , evenly spaced
That goes for the intakes and exhaust ports.
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Old Jul 12, 2004 | 02:54 PM
  #5  
Dale's Avatar
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From: AR
Car: 1991 Camaro RS Vert
Engine: 350 S-TPI
Transmission: T5
Axle/Gears: GU5/G80/J65
an old user named "raven" installed aluminum heads on his 2.8 rwd steel s10 block. You could possibly contact him and get some good details.
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Old Jul 12, 2004 | 04:07 PM
  #6  
Denis.V's Avatar
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From: Santiago, CHILE
Car: 1986 Pontiac Firebird Trans Am
Engine: 305 Tuned Port Injection
Transmission: The famous 700R4
Axle/Gears: No idea
Hi

I use these heads in my rebuilt 2.8 V6 car.

Yes, compression is insanely high: 238 PSI per cylinder.

Main spark table was retarded in 13 degrees with fan ON modified to 94ēC in order to prevent knock at high temperatures.

The airflow is high too. Surfaces and interior runners are smooth.

If you use these heads, you must burn the PROM for correct running or you'll waste your time and money. Final result could be a decreased HP. Incredible?, yes, but it's my experiencie: "my loss is your gain".


Denis V.
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