LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

400rwhp

Old Apr 10, 2008 | 04:49 PM
  #1  
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400rwhp

right now my car has 384rwhp and I want to get to 400rwhp really bad.(buddy said it couldnt be done on stock bottom end. I would love to prove him wrong) Someone told me if I were to get rid of my pacesetter LT's and used a tuned header like Hooker, Kooks or dynatech that I could hit 400rwhp. Does anyone agree with this? Please feel free to post your idea's.
Old Apr 10, 2008 | 04:52 PM
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it would definetly get you closer to your goal.my brother has some kooks for sale,if interested shoot me a pm.also changing to a newer custom grind cam would help.
Old Apr 10, 2008 | 04:59 PM
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Put in 1.6RR's, that might do it.

Also, go to a 2.5" dual exhaust with an X, that should help too.

Getting a 52MM TB could help too.
Old Apr 10, 2008 | 05:03 PM
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Dyno Tune?
Old Apr 10, 2008 | 05:29 PM
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Originally Posted by nitrofinch
right now my car has 384rwhp and I want to get to 400rwhp really bad.(buddy said it couldnt be done on stock bottom end. I would love to prove him wrong) Someone told me if I were to get rid of my pacesetter LT's and used a tuned header like Hooker, Kooks or dynatech that I could hit 400rwhp. Does anyone agree with this? Please feel free to post your idea's.
Your friend is an idiot, 400rwhp out of stock bottom end lt1's is nothing new. I'de ditch the AFR's and go with a different cam.
Old Apr 10, 2008 | 05:31 PM
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Which AFR's? Were they "out of the box", or was additional porting done to get them to flow decently?

Do a "search"..... there's a thread by a guy making almost 460rwHP on a stock bottom end, running E85.

https://www.camaroz28.com/forums/sho...d.php?t=595613
Old Apr 10, 2008 | 05:37 PM
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Originally Posted by nitrofinch
right now my car has 384rwhp and I want to get to 400rwhp really bad.(buddy said it couldnt be done on stock bottom end. I would love to prove him wrong) Someone told me if I were to get rid of my pacesetter LT's and used a tuned header like Hooker, Kooks or dynatech that I could hit 400rwhp. Does anyone agree with this? Please feel free to post your idea's.
It can be done my car made 457.8rwhp and 421rwtq on bone stock bottom end. This was done on E85 but on 93 octane my car made 442rwhp and 405rwtq. Switch to E85 and tuning you will meet your goals.

Chris

Chris
Old Apr 10, 2008 | 05:39 PM
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Originally Posted by Injuneer
Which AFR's? Were they "out of the box", or was additional porting done to get them to flow decently?

Do a "search"..... there's a thread by a guy making almost 460rwHP on a stock bottom end, running E85.

https://www.camaroz28.com/forums/sho...d.php?t=595613
Thats me
Old Apr 10, 2008 | 07:38 PM
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I would call you very lucky to be making that power with those crappy but extrememly expensive parts. But had you done things right and spent far less you could have had another 40hp like speed_demon24 429rwhp ported GM heads and over 10 degrees less duration to achieve it.
Old Apr 10, 2008 | 07:58 PM
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LPE Z convt, My set up is similar to yours but I have not gotten my dyno tune yet. I also need a couple other things (stall convertor, gears) installed. I should hope to have these installed by summer. Then it is own to the body and interior of the car(never ending story is what my wife thinks of it as). Anyway good to see another vert making good power and keep up the good work.
Old Apr 10, 2008 | 08:39 PM
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That is impressive pushin close to 500 hp with the stock bottom..
Old Apr 10, 2008 | 10:09 PM
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The AFR's are out of the box. I have another set of stock heads that I was going to get ported instead but when I took them to the machine shop they said they could not port them because there were not the heavy duty casting. What kind of porting would you suggest to do on the AFR's to make them work better.
Old Apr 10, 2008 | 10:38 PM
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Originally Posted by nitrofinch
The AFR's are out of the box. I have another set of stock heads that I was going to get ported instead but when I took them to the machine shop they said they could not port them because there were not the heavy duty casting. What kind of porting would you suggest to do on the AFR's to make them work better.

Whats the casting # on the heads?
Old Apr 10, 2008 | 10:55 PM
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How much do you guys think is possible with stock ported heads, intake, stock bottom end and the right combination?
Old Apr 10, 2008 | 11:29 PM
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The number on the head is 12571

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