Spark Plug Heat ranges, what gains have you made?

[MoJo Risen]

Originally Posted by Ralph A Powell

I now for a fact on the Boss 302 it was worth 10 hp as I was at Dyno the night we run it.

Thats approximately 2.5% gain?

There is more potential HP in a corrected Piston pin offset.

I'm glad we all know now that NHRA DOES NOT TECH THIS FEATURE.

[Stan Weiss]

Originally Posted by MoJo Risen

Thats approximately 2.5% gain?

There is more potential HP in a corrected Piston pin offset.

I'm glad we all know now that NHRA DOES NOT TECH THIS FEATURE.

Remember it is not one size does the same for all. This is a 426 ci Chrysler with the same 0.06" offset.

Bore = 4.25 Stroke = 3.75 Rod Length = 6.768 RPM = 6500
Wrist Pin Offset = 0.06
Actual Piston Stroke 3.75015962277
Cylinder Volume 53.200718 CI 871.803575 cc
Engine Size 425.605745 CI 6974.428599 cc
Crank Angle Piston TDC -0.39775244513 Piston BDC 179.29739772523

Stan

[pmrphil]

Wasn't the Boss 302 a dome piston? Can't put that in backwards.

[MoJo Risen]

Originally Posted by pmrphil

Wasn't the Boss 302 a dome piston? Can't put that in backwards.

No need to do that, any stocker can Submit their own piston for the class.