Timing on the 410 HP Performer RPM Crate

[James_78]

I have a similar combo to this engine with the Performer RPM heads (60899). My compression is a little higher, around 10:1, with a Comp Cams 270H.

I am looking for some base settings. I heard somewhere that the RPM Heads have a fast-burn type chamber, and might work better with less total timing (32-34 deg.) Any truth to this?

Thanks

[S. Armish]

In most cases, 36 degrees works best for those heads.

[James_78]

Thank you! -