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

what turbo kit to buy??

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Old Jun 15, 2007 | 12:50 AM
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From: Leon Iowa
Default what turbo kit to buy??

My buddy and i are building an LT1 for his 94 firebird. He is wanting to go with a 383 with a cam and heads. He is wanting a single turbo setup but was wondering what the options are. What are some good turbo kits that have a rear mount turbo?
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Old Jun 15, 2007 | 01:23 AM
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Two things. Don't go rear mount, and don't use a 383. If you guys have any welding abilities, I would suggest making your own setup using stock manifolds (you lose A/c that way) or making your own tubular manifolds.

I don't reccomend a 383 because a turbo already makes a LOT of torque, and upping the engine size that much will only make traction harder to get.

I myself have a PTK setup that I am piecing together to install this winter.
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Old Jun 15, 2007 | 01:44 AM
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I don't reccomend a 383 because a turbo already makes a LOT of torque, and upping the engine size that much will only make traction harder to get.
WTF? that's why they make slicks/drag radials.... i agree with the front mount turbo but don't handicap yourself cause of traction.... go with the most displacement your wallet can handle.... Or do a sick 355..... either way with a turbo it's going to punish tires....
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Old Jun 15, 2007 | 10:00 AM
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[QUOTE=1bdbrd]I don't reccomend a 383 because a turbo already makes a LOT of torque, and upping the engine size that much will only make traction harder to get.QUOTE]

that has to be the most retared thing i have ever heard, dont go bigger displacement because you'll have to much torque, ive never heard of to much torque, or to much tire spin, that actually makes me think....hmmm
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Old Jun 15, 2007 | 10:02 AM
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From: Leon Iowa
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Just wondering, what is so bad about the rear mount turbo? For some reason he has his mind set on doing it this way.
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Old Jun 15, 2007 | 10:32 AM
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i always heard good things about the rear mount turbo, keeps everything cool inside the engine bay, i hear you loose 1-2 ps1 running it that far way that, but i believe the cooler engine makes up for it.
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Old Jun 15, 2007 | 10:52 AM
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Originally Posted by plaf713
i always heard good things about the rear mount turbo, keeps everything cool inside the engine bay, i hear you loose 1-2 ps1 running it that far way that, but i believe the cooler engine makes up for it.
yea from what I have been reading , it will give a cooler shot of air to the intake because of the piping from the turbo to the intake
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Old Jun 16, 2007 | 12:17 AM
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Originally Posted by OutlawZ
WTF? that's why they make slicks/drag radials.... i agree with the front mount turbo but don't handicap yourself cause of traction.... go with the most displacement your wallet can handle.... Or do a sick 355..... either way with a turbo it's going to punish tires....
You ever see a 3 liter Supra kick sideways on Et Streets on the highway from a 70 roll with about 600rwhp? Now tell me that a 383 stroker will hook making MUCH more torque at a MUCH lower rpm with any sort of streetable tire.

A 355 is a bit cheaper to build because there isn't as much in the way of machining, you can reuse the stock crank if you aren't going to turn stupid amounts of rpms, you can use smaller heads which are cheaper, a smaller cam which helps with spring life and be a little bit more kind to your drivetrain as well. I don't see the problem?
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Old Jun 16, 2007 | 12:39 AM
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From: Leon Iowa
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Originally Posted by 1bdbrd
You ever see a 3 liter Supra kick sideways on Et Streets on the highway from a 70 roll with about 600rwhp? Now tell me that a 383 stroker will hook making MUCH more torque at a MUCH lower rpm with any sort of streetable tire.

A 355 is a bit cheaper to build because there isn't as much in the way of machining, you can reuse the stock crank if you aren't going to turn stupid amounts of rpms, you can use smaller heads which are cheaper, a smaller cam which helps with spring life and be a little bit more kind to your drivetrain as well. I don't see the problem?
yea i think you are right. If it was me I would go with a 355 but he doesn't seem to care. Money is not a problem so i guess he will spend whatever he wants. haha
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Old Jun 16, 2007 | 12:46 AM
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Originally Posted by mvvette97
yea i think you are right. If it was me I would go with a 355 but he doesn't seem to care. Money is not a problem so i guess he will spend whatever he wants. haha
Haha. Can you have him paypal me some extra money if it isn't a problem for him?

Of course some would argue my turbo setup which will consist of a 60-67mm turbo because you aren't going to hook more than 600rwhp anyway without a large budget or huge tires so I would personally rather have the response a smaller turbo will have.
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