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10 second 383 N/A?

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Old Jul 24, 2003 | 09:21 AM
  #1  
unknown_host's Avatar
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From: Medford, Oregon
Car: 1989 Iroc Z L98
10 second 383 N/A?

Basically, I am looking to the future, and the next motor I build is going to be the motor I want to run for a while to come. I have mid 12's at the moment, I should have low 12's/high 11's by the end of the season, and my next motor I would like to be somewhere in the 10's (as fast as i want to go for now). I am hoping to reuse my 350 block since i just shelled out 2200 for the crate motor a little over a year ago.

My question is, do you guys think a 6" rod, gen 1 sbc 383 could power a 3050 lbs (without driver) car to mid to high 10's n/a? Lets say the car can cut 1.5-1.6 60 foot times with the new motor to take the traction variable out of the equation, I am just interested in the motor itself.

My only stipulation for the motor would be that it would need to run on pump gas, that is "streetable" to me. I dont care if it has to idle at 2 grand or if I have to run a 4500 converter, I want to be able to put pump gas in it and run it detonation free.

So what ideas do you guys have for me? Here is my buildup in my mind so far:
383ci motor (6" H beam manley rods, undecided forged pistons, probably an Eagle 4340 3.75" stroke crank)
I'm thinking 11.5:1 compression or less depending on cam and heads
Cam will be a solid roller something like the following crower I found:
(254/264@.050), .638/.650 lift w/ 1.6, 106* LSA
Cylinder heads: Maybe some 18* trick flows or GM 18* high port heads?

Anyways, do you guys think this is possible? Feel free to point out anything that you think that you would like to see changed. Are 10's possible for my next motor?
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Old Jul 26, 2003 | 01:30 AM
  #2  
kfoley's Avatar
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Joined: Jul 2001
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From: New Palestine, IN (Just East of Indy)
Car: '85 Z28
Engine: 305
Transmission: WC T5, 3.23 posi
With some sick flowing heads (18*) and a huge cam with a decent amount of compression (as well as gears, 4.10's) I think it is very attainable, however I wouldn't want to run that motor on the street as a daily driver...
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Old Jul 26, 2003 | 03:07 AM
  #3  
camarojoe's Avatar
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Joined: Nov 2000
Posts: 812
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From: Indpls IN US
Car: 91 Z28
Engine: Forged 383
Transmission: Pro-built 700R4
When you're shooting for 10's, your suspension is going to play just as much a part a hp, when you're talking about the conditions you've suggested about an383 N/A. I also think an 18deg head setup would be the best way to go. You may be able to get their with some AFR 227 or Dart Pro 1's race ported, but your race weight better be under 2800lbs. Good luck hooking up!
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