you should know all about the special boring since you dont know a ring compressor from a torque wrench. By the way has your 35fontain ever ran since you bought it.

Hey guys been reading your threads great stuff!! I was wandering Can anyone build a reliable 496 from a stock 4bolt block using dart alm. heads 10.2 compression and still get 625 -650 hp @ 5000 rpm or so? I have a builder that claims he can, he is pretty well known in drag racing and he knows thers a big dif. in marine motors.I think he uses comp cams to guide him on cam selection.Im worried about reversion if its a big cam.Any thoughts? thanks

You will have to go more than 5k rpm to get tha Hp.

To get to that HP you'll have to aggressively cam it and spin it to 5800 or so And that would wound your midrange. Racecar guys just don't understand the powerband needs of the recreational boater. The bump to 10.2CR is unnecessary. Stay around 9.5.

A good rule of thumb- look at the offerings of every successful marine performance engine builder. If Chief, Zul, Sterling, et al offer 572's at 650, there's a reason.

That explains it.

Personally I wouldn't spring for the JE's. I'm also thinking you're low on cam/lifter price and really high on heads. Good iron rectangles for these motors can be found relatively cheaply

I'm still agreeing- looking for performance from these motors is a losing proposition

I agree with that statement...So would I.

Thank you!

LOL. fountain boy

good thread guys, great reading.....

It is nice to see help instead of pounding with salesmanship......Maybe key to questiones is saturday and sunday when the workin man is home to spread his knowledge......