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Horse power
What is the theoretical horse power of this configuration? at the crank? at the wheel ?
2.7 case 2.7 P/C 10.5:1 2.7 crank 2.7 S heads 35mm ports, stock springs, retainers GE 60 cams Twin plug Weber 40's, 36mm choke tubes, 160 mains, 170 airs, 36mm intakes Race gas 7200 RPM limit Thanks
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1970 914-6 GT Track Car 1974 IROC Track Car 1987 911 Targa 3.2 2008 BMW X5 |
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01-19-2010, 07:45 AM
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Location: CT
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My 3.0 twin plug is very similar.
I'll guess 10% reduction for displacement from my motor. At the crank 255 HP.
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Tom Butler 1973 RSR Clone 1970 911E 914-6 GT Recreation in Process |
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01-19-2010, 10:54 AM
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I think your power will be limited by your 7200 RPM. A better choice for this RPM would be GE-40 cams. I also think you need stiffer valve springs and/or titanium retainers for this RPM and this cam. I'd guess 245 HP with a good exhaust and the RPM/cams you gave. With GE-40's you'd get the same power but more torque at 4k-6k. With the GE-60's I bet you could get to 255 at 7500 RPM.
-Andy
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72 Carrera RS replica, Spec 911 racer |
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01-19-2010, 03:43 PM
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3 restos WIP = psycho
Join Date: Feb 2005
Location: North of Exit 17
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Ditto. Wrong cams for 7200 RPM limit, If you aren't going the long side of 7500 on a regular basis, the 40s are a much better choice.
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- 1965 911 - 1969 911S - 1980 911SC Targa - 1979 930 |
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01-19-2010, 04:41 PM
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1974 RSR
