Quote: Yes I have run 4.5 stroke stuff and IMO they ran like poo..Last one was a Stage V Hemi in my Barracuda car went 8.70's with that at 3000lbs. What a turd!!! The Stage V stuff was ok but it will be the last time I RACE an old school hemi unless I have a blower for sure. Had a lot f money in that motor for it performing like it did.
I do not understand why Mopar guys are so afraid of RPM. Only a few ways to make power and RPM is one of them. Especially if you are cylinder head limited RPM is the ONLY way to make power. If you build it right they will last just fine at a tad more RPM, but you have to have your comfort zone I suppose. IMO 8000-8500 in the traps is not gonna hurt anything and can be very durable if done right.
Why do you believe the reason is, that the motor with the 4.5 crank ran like poo?
Greg
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