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Discussion Starter #1
350 chevy .40 over 10.25 dome pistons edelbrock performer rpm manifold 750 holley 76 cc chambers 2.02/1.60 valves ported headers.can someone give desktop dyno figure?sorry forgot cam. .480/.498 228/236.also roller rockers,someone know aballpark figure from past experience? thanks!

[ March 02, 2002: Message edited by: jimm ]

[ March 02, 2002: Message edited by: jimm ]

[ March 02, 2002: Message edited by: jimm ]

[ March 02, 2002: Message edited by: jimm ]

[ March 04, 2002: Message edited by: jimm ]

[ March 06, 2002: Message edited by: jimm ]</p>
 

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Hot Rods are Built, not Bought
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Go to 4lo.com, they have a calculator called "poor mans dyno". It uses 1/4 mile et, or 1/4 mile speed and the weight of your car to guesstimate HP.
 

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thanks lakeroadster! havent run 1/4.[dirt drags machine]anyone find the time to run the numbers? "preciate it"
 

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Attached is the link to the dyno run screen. Looks like 429 ft-lb and 366 hp. The cam is limiting the upper rpm potential but sure gives good torque.

Note: The screen takes a bit to show up in the browser

Dyno Screen Print Link

 

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Discussion Starter #5
gracias rhamm1320! did i mention that roller rockers are 1.6? does this change upper h.p.?you guys are great !thanks again,jimm.

[ March 05, 2002: Message edited by: jimm ]</p>
 

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Discussion Starter #6
what? if any,change does using 1.6 ratio v.s. 1.5 ratio rockers make?and where?low,high?thanks jimm
 

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Thanks for being patient, I finally got to run the engine. This time (including 1.6 rockers) I got 454 ft-lb and 378 hp. Also, there are a few assumptions I made (I assume this was a hydraulic cam, I used a 155cc Intake port and 76cc chambers with a 12.5cc dome piston). If you have any more detailed information let me know and I can run it again.

Thanks,

Ron
 
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