[PONTIAC DUDE]

Originally Posted by Stan Weiss

Ken,
Do not know what the spec are for you engine. Lets say Bore = 4.185 - Stroke = 4.5 - Rod Length = 6.75. Using my calculator, for you to have a 170 PSI cranking compression you would have to have IVC @ 97 ABDC.

Stan

Used Performance Trends Engine dyno calculator. It spit out the results. I just input the info.

Try this.
Compression:12.75-1
Bore: 4.375
Stroke: 4.460
Rod length: 6.8

Cam specs: 283/[email protected]
114 LSA with 6 degree advance.

[Stan Weiss]

Originally Posted by PONTIAC DUDE

Used Performance Trends Engine dyno calculator. It spit out the results. I just input the info.

Try this.
Compression:12.75-1
Bore: 4.375
Stroke: 4.460
Rod length: 6.8

Cam specs: 283/[email protected]
114 LSA with 6 degree advance.

Ken,
My calculator uses seat numbers at the valve. Since weather has an effect this was run with temp = 70 and Barometric Pressure = 29.92

Stan

[PONTIAC DUDE]

Originally Posted by Stan Weiss

Ken,
My calculator uses seat numbers at the valve. Since weather has an effect this was run with temp = 70 and Barometric Pressure = 29.92

Stan

Cam spec: .003

IVC = 99


Your chart shows the same 170 cranking psi

[Stan Weiss]

Originally Posted by PONTIAC DUDE

Cam spec: .003

IVC = 99


Your chart shows the same 170 cranking psi

Ken,
I get 163.56.

Stan

[PONTIAC DUDE]

Originally Posted by Stan Weiss

Ken,
I get 163.56.

Stan

I should be able to run pump gas with that number. My hyd roller combo cranked at 170/175 and ran 93 Sunoco.

Fastest calculator?
Come on wheelie boy. Don't be hatin.
What do they use to figure out a cam profile for a combo.
What do they use to figure compression

Just trying to get a grip on a N/A pump gas combo. Back in the day Lingenfelter built high hp high compression engines running on pump gas. Even did a SBC with 14-1 on pump gas.

Don't you have a toilet to unstop or something?
Heard there is a Plumbing trade show in the N.E. Is the rumor true that you & Gach are rooming together.