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What kind of Hp am I looking at

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Old Dec 12, 2008 | 11:52 PM
  #1  
log93pow's Avatar
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From: Indiana
Car: 91 Camaro RS
Engine: Carbd 355
Transmission: T-56
Axle/Gears: Currently 2.73
What kind of Hp am I looking at

I have a 355 sbc bored .30 over. It has the wieland Team G intake with a Barry Grant 850 cfm carb. Im running the double hump heads. Not sure on which headers but for sure a high performance one and 1 5/8 in. primaries. What kind of power should this motor be making.
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Old Dec 13, 2008 | 12:13 AM
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From: nor cal
Car: 87 Z28
Engine: 89 tpi soon tpis big mouth & tubes
Transmission: 700r4
Axle/Gears: 3:43
Re: What kind of Hp am I looking at

We need more info there log93. like compression ratio. camshaft specs. if the heads have any work on them. to start with.
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Old Dec 13, 2008 | 12:21 AM
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log93pow's Avatar
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From: Indiana
Car: 91 Camaro RS
Engine: Carbd 355
Transmission: T-56
Axle/Gears: Currently 2.73
Re: What kind of Hp am I looking at

Originally Posted by tshack
We need more info there log93. like compression ratio. camshaft specs. if the heads have any work on them. to start with.
Well the compression ratio is 10:1 and not to sure about the cam just know its a 575 lift.
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Old Dec 13, 2008 | 01:34 PM
  #4  
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From: nor cal
Car: 87 Z28
Engine: 89 tpi soon tpis big mouth & tubes
Transmission: 700r4
Axle/Gears: 3:43
Re: What kind of Hp am I looking at

Originally Posted by log93pow
Well the compression ratio is 10:1 and not to sure about the cam just know its a 575 lift.
Well The best I could get from desktop dyno was
430 Hp 379 Tq @ 6000
432 Hp 349Tq @ 6500

This program is a limited older version. so may be 10 -15 % eather way depending on the tune.
Back in the day those double humps where good, But today's vortecs head out flow ported camel back& so many after market heads are so low priced it's not worth dumping fund in to those heads, IMHO.
Now then if you swap that 850 carb for a 750cfm double pump. & change to 1 3/4" headers or larger. you could gain 50-60 Hp. That's by the program. so you kind of over carbed there .

Last edited by tshack; Dec 13, 2008 at 01:42 PM.
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Old Dec 13, 2008 | 03:12 PM
  #5  
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From: Indiana
Car: 91 Camaro RS
Engine: Carbd 355
Transmission: T-56
Axle/Gears: Currently 2.73
Re: What kind of Hp am I looking at

[quote=tshack;3976307]Well The best I could get from desktop dyno was
430 Hp 379 Tq @ 6000
432 Hp 349Tq @ 6500

Thanks for the info
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