Cost of 454 to 540 upgrade?
02-02-2008, 12:30 PM
#71
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02-02-2008, 12:33 PM
#72
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496s
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
02-02-2008, 12:39 PM
#73
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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
02-02-2008, 12:42 PM
#74
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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
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.
Last edited by Chris Sunkin; 02-02-2008 at 12:47 PM.
02-02-2008, 12:46 PM
#75
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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
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
02-02-2008, 12:56 PM
#77
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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
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
02-02-2008, 01:12 PM
#79
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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......
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......
