LT1-LT4 Modifications 1993-97 Gen II Small Block V8

LT1 engine build up at Exotic Performance Plus

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Old 01-26-2006 | 06:11 AM
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Smile LT1 engine build up at Exotic Performance Plus

http://www.exoticperformanceplus.com...Car.php?car=37 Check this LT1 Trans-Am out. Hopefully we have this T/A back up and running next week. We are currently waiting on the Canton oil pan to show up. Bob

Old 01-26-2006 | 06:26 AM
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I thought everyone had forgot about us.
Old 01-26-2006 | 06:33 AM
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No splayed caps and no dished pistons????
Old 01-27-2006 | 12:41 PM
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Looks similiar to the motor about to be on my engine stand. Victory racing Forged 9:1 compression, Ported LT4 AFR heads, LT4 intake and monoblade setup and when it comes in my D1SC bolted to it. I will get pics when I get the charger in and the shortblock.
Old 01-27-2006 | 12:49 PM
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Sweet setup

Last edited by BRETTINATOR; 02-08-2006 at 01:39 AM.
Old 01-27-2006 | 02:02 PM
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Originally Posted by T/A KID
Looks similiar to the motor about to be on my engine stand. Victory racing Forged 9:1 compression, Ported LT4 AFR heads, LT4 intake and monoblade setup and when it comes in my D1SC bolted to it. I will get pics when I get the charger in and the shortblock.

What size combustion cambers did you get?
Old 01-27-2006 | 05:25 PM
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Sweet looking engine!
Old 01-27-2006 | 05:39 PM
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That lookls great, did y'all ahev the trick flows worked over any more?
Old 01-27-2006 | 06:29 PM
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Looking good! What else did you find wrong with the motor? Low 200rwhp something was bad wrong!
Old 01-27-2006 | 06:30 PM
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Thanks everyone! The Trickflow heads are box stock, we'll see what the engine does with them bone stock. Splayed caps won't be needed, we're not going to be revving this engine past 9000 rpm... lol The compression ratio will be in the 9.5/1 range, ideal for adding an ATI ProCharger in the future. Bob
Old 01-27-2006 | 08:14 PM
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what kind of hp numbers are you thinking will it put down and about what kind of price are you looking at
Old 01-27-2006 | 11:52 PM
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What size combustion cambers did you get?
Well they are actually 57CC I was planning on going with a 396 N/A setup using these same heads and a Converted Super Vic with some spray, I sold the super vic and decided to go with a 383 and a charger using the same heads. A friend of mine made 580RWHP and 620RWTQ with a Very similiar setup to mine (LE ported LT4 heads, 383, 58mm TB, 224/236 114 LSA blower cam on a P1SC on 8lbs of boost through twin high flows.)
I have basically the same with probably a little bit better head, slightly bigger duration cam, Monoblade, and I have a D1SC plan on pushing 15lbs through a FMIC.

what kind of hp numbers are you thinking will it put down and about what kind of price are you looking at
I would think depending on A LOT OF THINGS that are Unkown, but I would say over 525RWHP with around 8lbs of boost.
I have seen lt1's with stock heads hit clost to 500

Looking good! What else did you find wrong with the motor? Low 200rwhp something was bad wrong!
yea its on a Mustang dyno, I would say add around 40RWHP from a dynojet to a Mustang so that car should make right at around 250 or so RWHP on a Dynojet, about right from a 93-95 LT1 auto
Old 01-29-2006 | 03:41 PM
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The cam was not getting oil, which was a little strange. All new parts went it, and we are pre-oiling it prior to start up, making sure the valvetrain sees oil. It is hard to say what the horsepower will be at on our Mustang Chassis Dyno, stock LT1's dyno at 195 rwhp on it. I'd be happy with 350 rwhp or so. Once the ATI ProCharger is installed, I'd expect to see 500rwhp without having to push a lot of boost. The owner of this T/A plans on doing some roadracing with it. Bob
Old 01-29-2006 | 09:07 PM
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MAN, i wish y'all were closer to me i'd need a hook up on the 94z badly... i'd hook you up with a motor rebuild seriously.....i cant seem to find a good one where i live, truthfully no one thats messed with lt1's, thats what i want someone that knows what there doing thats the important thing..........
Old 01-29-2006 | 11:27 PM
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Looks good. Valve train issues like this engine had are all to common
Old 02-01-2006 | 01:14 AM
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nice setup
Old 02-01-2006 | 06:07 AM
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Originally Posted by 2fast97Z
nice setup
Thanks! Bob
Old 02-01-2006 | 08:58 PM
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looks like a nice set up...me and my father are looking into a lt1/lt4 for his already procharged car , we have a p1 right now and and hopin to get about max power out of it for now is that short/long block set up for it and to get 600+ whp and maye a price rage for one?
Old 02-01-2006 | 09:52 PM
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I took this right off the front page of your site:

We were only seeing rwhp in the low 200 range, almost what these LT1 cars get bone stock!

Since when do LT1's get low 200's bone stock? I know guys that have hit 275-280 RWHP in their stock LT1's.

Edit: Missed your response. Got it now.
Old 02-04-2006 | 10:18 PM
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Originally Posted by jason02Z
looks like a nice set up...me and my father are looking into a lt1/lt4 for his already procharged car , we have a p1 right now and and hopin to get about max power out of it for now is that short/long block set up for it and to get 600+ whp and maye a price rage for one?
You can sink an easy 6k into an engine without even thinking about it. We used a $1,400.00 callies crank, Callies Compstar rods, Diamond pistons, $1,300.00 Trick Flow heads, and the Canton oil pan showed up yesterday.
Naturally if you do the engine removal, rebuilding, and the reinstallation of the engine, you can save a lot of money.
We just recently finished a 383 LT1 in a one owners 192,000 mile '94 Corvette. With an ATI ProCharger at only 8 psi of boost, we made 475 rwhp on my Mustang Chassis Dyno. This engine should last another 192,000 miles with only 8 psi of boost. This would be 520 or so rwhp on a Dynojet dyno, well over 600hp at the engine. Bob


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