500 on the track?

[trae68]

im thinking of putting my 500 in my enduro car. we run 100 laps on a dirt track....would the motor hold? my motor is .030 over with flat top pistons and 72cc heads.... i dont know how these motors hold when there ran hard for about 30 min

[MilesO]

A 500 Cad with 4.33 x 4.304 using 76cc heads and flat top pistons has a comp ratio of 12.5:1.

If you are actually using 72cc chambers (heads have been cut), the comp ratio is 13:1.

This requires race gas or alcohol or propane.

If you are not using one or more of these I wouldn't even start the engine.

[trae68]

I plan on running torco 110 octane.

[trae68]

I plan on running torco 110 octane.