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Old 03-12-2006, 09:07 PM
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how much power should this make?

I posted a dyno for my 400 eng. small block,and they made me go out and buy another cam a roller actually,so if I could get anyone to give me a reading on the desk top dyno I would surely appreciate it.Here are the specs:
sb Chevy
bore 4.185
stroke 3.750
0 deck height
6" H beam rods
11.1 Comp. ratio forged pistons
low friction rings
crane hydraulic roller camshaft
Valve setting Intake .000 Exhaust .000 Hot
Intake@cam 339 @valve 509
Exhaust @cam 352 @valve 528
1.5 Rocker Arm ratio

CAM Timing: Tappet@.004
Intake opens 31.0 btdc Intake closes 73.0 abdc Adv. duration 284.0
Exhaust 79.0 bbdc Exhaust closes 33.0 atdc Adv. Duration 284.0

Min rpm 2000
Max rpm 6200

Cam timing: Tappet@0.050
Lift Intake opens 4.0 btdc closes 38.0 abdc max lift 107 duration 222.0
Lift Exaust opens 52.0 bbdc closes (2.0)btdc max lift 117 duration 230.0

I am using fully roller retro fit lifters
the cylinder heads are Jegs aluminum
197cc with a 2.05 1.60
the springs are 1.440"
1.875" installed height 130 pounds seat pressure
I am using full roller aluminum racing rocker arms with a 1.5 ratio
The intake is a victor junior open plenum rpm range 3500-8000 rpm
The carb will be a 700 750 800 cfm double pumper holley or speed demon
not sure may-be this will tell what size carb to run.
well here is the specs.I hope I didn't forget anything
If someone could give me a ball-park figure on desk-top dyno
It what let me know is this the right cam or not
thanks hotrodder.com is the best

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Old 03-12-2006, 11:13 PM
killerformula's Avatar
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well depending on what you end up with for exhaust and the parts you suggested, you should be bumping out high 400's. 460-490 horse or so. Are those heads CNC?

K
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Old 03-13-2006, 06:44 AM
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Quote:
Originally Posted by killerformula
well depending on what you end up with for exhaust and the parts you suggested, you should be bumping out high 400's. 460-490 horse or so. Are those heads CNC?

K
I don't think they are,but I was thinking about port macthing the intake,and smoothing up the combustion chamber.
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