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Author
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Topic: higest compression ratio for 91 oactane
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1fastmach1
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Member # 10137
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posted
 
 
What the highest you think I can get away with 91 oactane plan on buying new rods and pistons but want the higest compression with out denoting was thinking either 11.1 - 11.8
[ 2014-04-15, 06:14 AM: Message edited by: 79 cobra ]
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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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5.0 LsX
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Member # 10017
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posted
what motor? what heads? what cam?
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91' Notch
Posts: 1260 | Registered: May 2010
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Tom Renzo
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Member # 13165
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posted
Depends on the CAM!!!!
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I spend money i don't have. Building cars i don't need. To impress people i don't know.
Posts: 557 | From: CT | Registered: Sep 2013
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4IDFOX
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Member # 9921
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posted
quote:
Originally posted by Tom Renzo:
Depends on the CAM!!!!
What Tom said.
Dynamic (cranking) compression is what matters. And that is controlled by the cam timing events. You could have a 12:1 motor that will run on 91 and a 10:1 motor that will not because of the cam timing events.
The motor in my road race car is a flat top piston 306 wit 58cc heads. That is about a 10:1 motor. But with the custom cam I run I have 196# of compression from a 10:1 motor.
[ 2014-04-15, 08:50 PM: Message edited by: 4IDFOX ]
Posts: 375 | From: Redding CA | Registered: Apr 2010
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1fastmach1
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Member # 10137
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posted
Gonna be a 5.4l with c heads and comp stage 3 nitous cams and heads are 52 cc
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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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Tom Renzo
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Member # 13165
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posted
Need specks on cam.
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I spend money i don't have. Building cars i don't need. To impress people i don't know.
Posts: 557 | From: CT | Registered: Sep 2013
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Vndcatr
CAFords OG
Member # 2343
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posted
quote:
Originally posted by 79 cobra:
Gonna be a 5.4l with c heads and comp stage 3 nitous cams and heads are 52 cc
Quick question on your build setup.. I see you have the 52cc 03/04 heads, Which piston are you using?
[ 2014-04-16, 05:22 PM: Message edited by: Vndcatr ]
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Built 01 cobra
400 rwhp
11.7@117mph , 1.62 60ft
Posts: 1066 | From: Sacramento,Ca | Registered: Jan 2003
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1fastmach1
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Member # 10137
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posted
Going with manley pistons and h beam rods
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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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1fastmach1
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Member # 10137
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posted
Got a deal on a 98 cobra shortblock going to buy rods and pistons but still need to know if 11.1 will work going to be a c head motor with stock cams
Thanks ,
Brett
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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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Tom Renzo
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Member # 13165
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posted
Depends on the cam!!
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I spend money i don't have. Building cars i don't need. To impress people i don't know.
Posts: 557 | From: CT | Registered: Sep 2013
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1fastmach1
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Member # 10137
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posted
Going to use the stock cams from my mach 1
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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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