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jmkachina

08-03-2007 02:25 PM

zz502 rebuild rpm

I had my 502 built into a 542. I can now only get 72mph at 5000 rpm. it has a direct dominator jet drive. should this motor have more rpm. 5000 rpm is the max i can get it to. the guy who built it said it should have about 600 horse.

OldSchool

08-03-2007 02:49 PM

I had mine propped to run @5600 WOT. They are now with a new owner, but currently have about 300 trouble-free hours on them and are still running very strong. I believe that GM states that 5800 is the redline.

Craig

Old Navy

08-03-2007 04:05 PM

Go over to hotboat on the "Just Jets" forum, they will help you out.

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