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Original Message
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| RE: You will need to run racing gas. |
| By David - 05/02/2004 6:10:23 AM; IP 69.48.11.42 |
Running race fuel or pump gas with good octane booster should not be a problem. I know the thermal coatings I had applied to the piston domes & the heads will help lower that requirement but I also understand that I will more than likely have to run high octane race gas.
You are correct this is a Hi-Po street build that will see a few runs down the track. This is being built as a Hi Torque Hi Performance motor and will likely have a max RPM of 5500 about where the cam signs off.
I am running a Cam Research cam kit & also have the Cam Research External Cam timing Advance/Retard setup that alowes up to + & - 10deg ( I have checked & have plenty of valve clearence to run up to the full 10deg cam advance & 10deg retard).
Cam specs are as followes:
(NOTE: I am running 1.76 adj Harland Sharp
roller rockers so valve lift will be a bit higher than that listed by the manufacture which speced lift with 1.73 rockers)
Intake: Exhaust:
lift
(@ 1.73) .486" .512"
Adv dur: 272 deg 280 deg
112 deg lobe seperation
dur @ .050" 208 deg 215 deg
open -2 deg ATDC -9 deg ATDC
close 30 deg BTDC 44 deg BTDC
Spring specs: 90lb seat & 290lb open |
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