Originally Posted By RAMM
Originally Posted By HotRodDave
I run about 220 on my pump gas 410 stroker in my dakota, 11 to 1 221@.050 cam, pulls like mad anywhere between idle and 6000 RPM, a shorter duration cam can bump up the cranking compression as can a bunch of other things like ring seal, engine temp, sterter RPM, valve seat seal...


This I wish more people would take note of.^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Starter RPM is the only misnomer with this post.

You must be on top of the tuneup but man I bet this engine is incredibly fun and crisp.

I shoot for a minimum of 175 if the customer is VERY average and I shoot for 195-200 if a customer is VERY aware. J.Rob


In theory starter RPM should not change it but in real life it does. If you had absolute zero leakdown it should not matter but turning an engine over on the stand would be impossible by hand if it held 200 PSI at hand turning RPM. Even with zero gap rings and such you can still turn the engine a little bit wait a little bit and turn it some more. At least I have never found one with complete perfect sealing.

I am not causing global warming, I am just trying to hold off a impending Ice Age!