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help with est. hp of my motor

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Old Jan 26, 2014 | 10:41 PM
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im running 241 heads..
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Old Jan 26, 2014 | 10:44 PM
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Originally Posted by 20SS06
That's 285 hp stock.

Bored 30 over -> around 3 HP at the crank but done mostly for C/R
Your cam is mild -> Let's say around 40 HP
243 Heads -> somewhere between 15 - 18 HP (Let's assume 18 HP)
Hooker long tubes -> around 18 HP
Injectors -> very minimal
Fast 102 combo -> 18 - 22 HP (Mostly in the top end)

So in total you should be around 389 HP. A 93 octane custom tune and you should be around 410 hp.
thanks for the info..im looking foward to some spray in the future
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Old Jan 26, 2014 | 10:48 PM
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Yeah I meant 241, I mistyped it. Edited it.
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Old Jan 27, 2014 | 01:13 AM
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I am thinking 389rwhp is a little optimistic. My setup is a little wilder and barely broke 400. Granted I haven't done intake or headers yet so I'm leaving a little on the table, but not that much.
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Old Jan 27, 2014 | 09:47 AM
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I don't think 389 is being optimistic. You say you have a Wilder setup but you have the L31 engine which is 255 HP, 30 HP less than OP's car.
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Old Jan 27, 2014 | 05:00 PM
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so do you think with a 200 shot is is possible to get atleast 550hp to the ground?.. or would i be better off with a turbo or supercharger setup?
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Old Jan 27, 2014 | 05:05 PM
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200 on top of around 389 hp that's around 589 hp at the crank not the ground. It would be 400 something on the ground. I would say definitely supercharge that thing! You won't regret it.
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Old Jan 28, 2014 | 10:57 AM
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Originally Posted by 20SS06
200 on top of around 389 hp that's around 589 hp at the crank not the ground. It would be 400 something on the ground. I would say definitely supercharge that thing! You won't regret it.
yeah.....wife might kill me maybe with my tax return
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Old Jan 31, 2014 | 12:39 AM
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Originally Posted by 20SS06
I don't think 389 is being optimistic. You say you have a Wilder setup but you have the L31 engine which is 255 HP, 30 HP less than OP's car.


It's a 5.7L L59. I left the .120" overbore and 10.75:1 CR out of my sig due to length constraints LOL.

Hence the "wilder" note.



My HP number is at the ground. When you said 389 I assumed you meant wheel HP, not crank.

Last edited by Suburbazine; Jan 31, 2014 at 12:53 AM.
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Old Jan 31, 2014 | 08:03 PM
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moroso has a little calculator sliding scale thing. i prefer going to a track and look at weight et and mph.
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