Engine build hp estimate

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07-24-2013, 02:08 PM

#21

KW Baraka

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Quote:

Originally Posted by jewbacca

Guess you're just the expert then. Look around and you'll see plenty of people making 340-350 HP on a well tuned stock headed cc503......

Not an expert.....just a non-believer.

KW

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07-24-2013, 04:42 PM

#22

jewbacca

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Quote:

Originally Posted by KW Baraka

Not an expert.....just a non-believer.

KW

Just for you KW!

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07-24-2013, 04:56 PM

#23

Ed Wright

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Quote:

Originally Posted by KW Baraka

With stock heads through a 4L60E and no headers?

I'm gonna say 270 to 280 HP through the wheels.......

KW

My race car ('96 TA) 4L60E made 285 rwhp with a B&B cat back, off road Y pipe and a little tuning. Never had a valve cover off. Before I screwed it all up. LOL
Lots of cam only cars been across my dyno over 300 rwhp.

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07-24-2013, 06:46 PM

#24

KW Baraka

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Quote:

Originally Posted by Ed Wright

Not disputing that.

But most (essentually) cam only LT1 cars with a 4L60E are gonna dyno a good bit less than 300 HP to the wheels.

And I'm saying that this car (as it stands) will be one of those cars.

KW

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07-24-2013, 07:23 PM

#25

Ed Wright

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Quote:

Originally Posted by KW Baraka

I don't remember tuning a cam-only LT1 on my dyno under 300 rwhp.

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07-24-2013, 07:55 PM

#26

jewbacca

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Quote:

Originally Posted by Ed Wright

I don't remember tuning a cam-only LT1 on my dyno under 300 rwhp.

Did you ever see any get close to 340? Not saying it's the norm (or that it couldn't have been a VERY friendly dyno), but I've read of a few people hitting 340hp on a 503.

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07-24-2013, 08:26 PM

#27

96capricemgr

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The top of the heap bolt only cars can top 300rwhp.

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07-24-2013, 08:29 PM

#28

Ed Wright

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Quote:

Originally Posted by jewbacca

Did you ever see any get close to 340? Not saying it's the norm (or that it couldn't have been a VERY friendly dyno), but I've read of a few people hitting 340hp on a 503.

That would be the high side for sure. They all gain about the same. Some were just turds from the factory. I have seen virgin LT1s only make 230 or so. One of those dogs wouldn't make 300 with a cam only.

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07-24-2013, 09:27 PM

#29

Speedy

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Quote:

Originally Posted by Jdawson38995

There are no Dynos within 100 miles of me...so does anyone know about what output this setup should make.....

Bored to 355
Cc503 cam
1.5rrs
Flow master cat back
Kn cold air intake
3k stall
Programmed computer

That's a standard 330rwp build. But remember, the big thing with the 503 is the flat power band, you don't get spectacular HP but you do win races.

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07-25-2013, 02:05 PM

#30

jewbacca

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Quote:

Originally Posted by Speedy

That's a standard 330rwp build. But remember, the big thing with the 503 is the flat power band, you don't get spectacular HP but you do win races.

I'd agree with you it's a 330 hp build, if he had proper exhaust, a good mail order tune, and 1.6's. He needs to spend en afternoon swapping to longtubes and 1.6's, and then sending his PCM off to a good tuner.

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