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How does this build sound?

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Old 10-17-2009, 03:26 PM
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Car: 87 monte aerocoupe
Engine: 383 HSR w/ novi 2000
Transmission: Built 4l80e circle d converter
Axle/Gears: Currie 9" 3.89 gears
How does this build sound?

Here's what I want to build for a guy with a 85Z. A 406 vortec hybrid motor. Basically, heres the parts:
Alum vortec heads, 200cc int,72cc exh 64cc combustion, 202/160 valves
comp cam 230/236 .49/.49 110 lsa
cast crank with 5.7 rods
static compression at 9.5 dynamic at 7.5
750 edelbrock carb with air gap intake
long tube headers into a y pipe
3 row aluminum radiator

I think this should be a good, solid combo, what do you think?
Old 10-17-2009, 04:12 PM
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Car: 82 S10, 83 280ZX, 84 Z28
Engine: 355 smallblocks..na, 2.8 turbo
Transmission: 85:th350, 84:700R4
Axle/Gears: 85:ford9 4.85, 84:stock 3.24
Re: How does this build sound?

i think the pistons will need too much dish for a 9.5:1 comp ratio with 64cc heads. you might have a detonation problem. everything else sound like it will work well. you would need a 25cc dish at 0 deck clearance for 9.5:1
Old 10-17-2009, 04:19 PM
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Join Date: Feb 2009
Location: Nowthen, MN
Posts: 323
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Car: 87 monte aerocoupe
Engine: 383 HSR w/ novi 2000
Transmission: Built 4l80e circle d converter
Axle/Gears: Currie 9" 3.89 gears
Re: How does this build sound?

The pistons I found are actually 30cc dished. What calculation are you using for compression ratio.It seems like wherever I go, I get a little bit different number every time.
Old 10-17-2009, 04:28 PM
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Car: 82 S10, 83 280ZX, 84 Z28
Engine: 355 smallblocks..na, 2.8 turbo
Transmission: 85:th350, 84:700R4
Axle/Gears: 85:ford9 4.85, 84:stock 3.24
Re: How does this build sound?

http://www.csgnetwork.com/compcalc.html thats a little too much dish for me. the flatter the piston top is the better quench you will have (less chance of detonation)
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