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Author
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Topic: supercharging gt40p heads
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keith84svo
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Member # 11990
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posted
 
 
My plan is to rebuild my 93 block with forged pistons. It has hypereutectic pistons.
Mileage... I don't now 60K or 160k. I have gt40p heads. They are ported, tfs springs, I'll probably get 1.6 rockers. I wanna stay with stock cam. How much boost can I run safely. Please don't say anything about aluminum heads. I want a nice weekend street car. Nothing radical.
Thanks
Posts: 28 | From: sacramento | Registered: May 2012
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racsirx
CAFords OG
Member # 1710
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posted
6-8lbs of boost max and make sure your tune is perfect otherwise you will be changing head gaskets a lot, and might be changing some pistons also
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88 Saleen #564
88 GT 331 NOVI2000
88 Coupe TURBO 9.75@142
95 Cobra R #75-SOLD
06 F250
13 BMW AH3
17 GT350 #5556
GOD'S NOT DEAD
Posts: 20750 | From: Concord & Pittsburg, CA | Registered: Aug 2002
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Fostang
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Member # 3752
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posted
That's a loaded question
Flat top/ domed or dished Pistons?
Any surface work to heads? Have they been cc'd?
Get the quench right with a good head gasket and 30 psi with c16 gas or about 10 with pump gas.
Too many unknowns to give you a round number.
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67' Fastback TT 408
67' Camaro Lsx
64' Corvette Fuelie
57' Chevy Bel Air Lsx
68’ Pony Convertible
66’ Pony Coupe
Posts: 3011 | From: Stockton/Danville | Registered: Nov 2003
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racsirx
CAFords OG
Member # 1710
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posted
quote:
Originally posted by Fostang:
That's a loaded question
Flat top/ domed or dished Pistons?
Any surface work to heads? Have they been cc'd?
Get the quench right with a good head gasket and 30 psi with c16 gas or about 10 with pump gas.
Too many unknowns to give you a round number.
Lol, I tried 12lbs with C16 and blew the gaskets on the dyno with gt40p heads, they just don't like boost
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88 Saleen #564
88 GT 331 NOVI2000
88 Coupe TURBO 9.75@142
95 Cobra R #75-SOLD
06 F250
13 BMW AH3
17 GT350 #5556
GOD'S NOT DEAD
Posts: 20750 | From: Concord & Pittsburg, CA | Registered: Aug 2002
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Fostang
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Member # 3752
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posted
quote:
Originally posted by racsirx:
quote:
Originally posted by Fostang:
That's a loaded question
Flat top/ domed or dished Pistons?
Any surface work to heads? Have they been cc'd?
Get the quench right with a good head gasket and 30 psi with c16 gas or about 10 with pump gas.
Too many unknowns to give you a round number.
Lol, I tried 12lbs with C16 and blew the gaskets on the dyno with gt40p heads, they just don't like boost
Lol I was only kidding about the 30psi.
But you know what's up.
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67' Fastback TT 408
67' Camaro Lsx
64' Corvette Fuelie
57' Chevy Bel Air Lsx
68’ Pony Convertible
66’ Pony Coupe
Posts: 3011 | From: Stockton/Danville | Registered: Nov 2003
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