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My parents took me to Lincoln Park Speedway in Putnamville, Indiana when I was four. The sound of the screaming 6-cylinders immediately had me hooked. That was 44 years ago. Today I keep a...

We actually began running a 6.20, then went to the 6.39 mid-season last year.

I'll certainly keep in mind going to the 6.57 when the track goes black slick. Thanks for the suggestion.

Well, the 6.57 did not work in out favor on a heavy, then tacky track. 6.39 worked better for us.

Going to try a 6.57 this weekend and see what the driver thinks.

Thanks for your input:)

Engine has 23 degree heads and roller valvetrain. Verified that the chip is set at 8700. Also spoke with the driver about whether or not he feels that the tires are spinning and not grabbing. he...

I would appreciate a little help understanding gearing and RPM change on a UMP modified.

We run a 4-link (clamped up) suspension on the LR, and spring-on-top Z-link on the RR.

We are running a...