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Author
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Topic: how much boost on 10:1 compression
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1fastmach1
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Member # 10137
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posted
 
 
how much boost on a 10:1 347 with a 4 bolt main
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REDLINE MOTORSPORTS CC EST 2011
1993 CHP sold
2004 mach 1 408 Windsor n20 fed
R.I.P. JORGE GUTIERREZ JR
6/13/1982- 11/05/2013
Posts: 2592 | From: clawwwitter to 7th st | Registered: Jul 2010
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JohnB
Tech Moderator
Member # 969
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posted
Way random. Depends on your fuel system, your camshaft, and tune...
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1965 Shelby Cobra
1993 Cobra
2012 F150 Raptor
2020 GT500
Posts: 6523 | From: Orlando FL/Redding CA | Registered: Mar 2002
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1fastmach1
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Member # 10137
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posted
255 in tank and 255 inline and 42 lb injectors and a e 303 with holley intake
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REDLINE MOTORSPORTS CC EST 2011
1993 CHP sold
2004 mach 1 408 Windsor n20 fed
R.I.P. JORGE GUTIERREZ JR
6/13/1982- 11/05/2013
Posts: 2592 | From: clawwwitter to 7th st | Registered: Jul 2010
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JohnB
Tech Moderator
Member # 969
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posted
I wouldn't go any more than 8 psi. You need a real fuel system, that's the limiting factor.
[ August 21, 2010, 11:30 PM: Message edited by: JohnB ]
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1965 Shelby Cobra
1993 Cobra
2012 F150 Raptor
2020 GT500
Posts: 6523 | From: Orlando FL/Redding CA | Registered: Mar 2002
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1fastmach1
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Member # 10137
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posted
wat about the compression ratio is that a factor cus i got a 12 lb pulley
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REDLINE MOTORSPORTS CC EST 2011
1993 CHP sold
2004 mach 1 408 Windsor n20 fed
R.I.P. JORGE GUTIERREZ JR
6/13/1982- 11/05/2013
Posts: 2592 | From: clawwwitter to 7th st | Registered: Jul 2010
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JohnB
Tech Moderator
Member # 969
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posted
Either ditch the pulley for a 8 psi or less setup, or upgrade your fuel system.
Or, just change head gaskets every time you pop one. Run a 9333PT1 FelPro gasket.
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1965 Shelby Cobra
1993 Cobra
2012 F150 Raptor
2020 GT500
Posts: 6523 | From: Orlando FL/Redding CA | Registered: Mar 2002
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1fastmach1
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Member # 10137
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posted
wat system do u recomend and i got mls head gasket from fel pro
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REDLINE MOTORSPORTS CC EST 2011
1993 CHP sold
2004 mach 1 408 Windsor n20 fed
R.I.P. JORGE GUTIERREZ JR
6/13/1982- 11/05/2013
Posts: 2592 | From: clawwwitter to 7th st | Registered: Jul 2010
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JohnB
Tech Moderator
Member # 969
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posted
Upgraded supply/return lines and a bigger pump.
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1965 Shelby Cobra
1993 Cobra
2012 F150 Raptor
2020 GT500
Posts: 6523 | From: Orlando FL/Redding CA | Registered: Mar 2002
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1fastmach1
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Member # 10137
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posted
i got 10an in and 8an out already
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REDLINE MOTORSPORTS CC EST 2011
1993 CHP sold
2004 mach 1 408 Windsor n20 fed
R.I.P. JORGE GUTIERREZ JR
6/13/1982- 11/05/2013
Posts: 2592 | From: clawwwitter to 7th st | Registered: Jul 2010
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JohnB
Tech Moderator
Member # 969
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posted
quote:
Originally posted by 79 cobra:
i got 10an in and 8an out already
With a 255 intank and a 255 inline? lol...ok.
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1965 Shelby Cobra
1993 Cobra
2012 F150 Raptor
2020 GT500
Posts: 6523 | From: Orlando FL/Redding CA | Registered: Mar 2002
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phildog
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Member # 1214
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posted
An e cam in a 347 aftermarket block with boost? Really? The cam is gonna hold you way back. You can make power in spite of the cam, but it's time to step up the bumpstick.
[ August 22, 2010, 07:47 PM: Message edited by: phildog ]
Posts: 1554 | From: 510 | Registered: Apr 2002
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92stangLX
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Member # 3252
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posted
6lbs.. maybe
Posts: 5302 | From: San Francisco | Registered: Sep 2003
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70mach351
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Member # 7528
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posted
i think johnb is saying magnafuel or aeromotive something that will support a lot of hp. You do not want to run out of fuel and detonate. On my cobra i had a a1000 with 10 an supply and 8an return. got a sumped tank and aeromotive setup if your interested. pics are in my profile.
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70 Mach 1 gettin a make over
2001 Ford F250 Crew Cab 7.3
Posts: 1762 | From: EDH | Registered: Mar 2007
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BIGBALLFACTOR
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Member # 7277
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posted
quote:
Originally posted by 70mach351:
i think johnb is saying magnafuel or aeromotive something that will support a lot of hp. You do not want to run out of fuel and detonate. On my cobra i had a a1000 with 10 an supply and 8an return. got a sumped tank and aeromotive setup if your interested. pics are in my profile.
you still got the tank i can pick up monday
Posts: 6908 | From: okc | Registered: Dec 2006
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