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

383 build up questions

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Old 06-23-2006, 12:50 PM
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383 build up questions

basicly i got a lt1 pretty modded now.making about 400 hp or more.but want to make a 383 stroker out of it but prepare it for a super charger.im hoping to get over 700 hp but no less than 600.i want to know if any one knows of a kit for like a $1000.i want it to be forged of coarse.and what kind of stroker kit should i get.like spec wise cause ive done a lil shoping and there seems to different kinds of kits.
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Old 06-23-2006, 01:30 PM
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Re: 383 build up questions

Most rotating assemblies for that type of application will be made of 4340 steel and are going to be $1600+.

Figure on spending alot more in block and head prep too.
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Old 06-23-2006, 01:50 PM
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Re: 383 build up questions

I tried to go the kit route which limited me in choices for connecting rod length etc. Most 383 kits are not set up for supercharger setup (low compression ratios). Here's were I got mine http://www.sdpc2000.com/catalog/3258...Assemblies.htm These kits are in the $2500 range though...
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Old 06-23-2006, 01:57 PM
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Re: 383 build up questions

Most companies offer a low compression 383 kit. Eagle includes a 4340 crank, H beam rods, and JE/SRP pistons. You can get them from Combination Motorsports or most of the other vendors.

EAG-12106Eagle SBC Forged Rotating Assembly
3.75 Stroke Crank, 5.70' Rods, SRP -31cc Dish Pistons, PM File Fit Ring Set
$1649.97
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Old 06-23-2006, 02:18 PM
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Re: 383 build up questions

hey 95z383lt4.what numbers are you laying down off that set up
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Old 06-23-2006, 02:19 PM
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Re: 383 build up questions

so what is better a supercharged 355 of 383.cuz i dont have 3000 for a 383 kit lik you guys are sayn ima need
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Old 06-23-2006, 02:36 PM
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Re: 383 build up questions

A 355 with some juice would be a better option for a budget.

$3k is a drop in the bucket when you start talking about a FI build on an LT1. Want to guess how much I have into my 383/T trim setup right now. I sure don't.
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Old 06-23-2006, 02:48 PM
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Re: 383 build up questions

Originally Posted by jmh96z28
hey 95z383lt4.what numbers are you laying down off that set up
I don't know. I'm quite curious about that myself. It hauls **** though. I've put over 15,000 miles on it and I've never got it to a dyno. I've been running on PCMforless tune. The scans look good. It's going to the dyno soon (this month). Sorry about the bad info on the kits... I guess there are low compression setups out there. I'm running around 10.5 cr thus the low boost.
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Old 06-23-2006, 05:39 PM
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Re: 383 build up questions

you make it seem like a 10.5 is no good.thats what i want.a ten second car.how much is your compression.also what would be better.a 383 low compression with low boost or a 355 low compression higher boost.also can i have a 355 with a stroker bottom end
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Old 06-23-2006, 05:49 PM
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Re: 383 build up questions

how much boost can a properly set up 383 handle and a 355.also what other bore options do i have.like can i bore it to say in between 355 and 383.
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Old 06-23-2006, 05:51 PM
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Re: 383 build up questions

Originally Posted by jmh96z28
you make it seem like a 10.5 is no good.thats what i want.a ten second car.how much is your compression.also what would be better.a 383 low compression with low boost or a 355 low compression higher boost.also can i have a 355 with a stroker bottom end
He's running 10.5:1 compression. On a FI motor, less compression and more boost will always make more power than the reverse.

A 355 and a 383 will have the same 4.030 bore. The displacement comes from the crankshaft. 3.75" would be a 383, 3.48 would be a 355.

And the amount of boost you will see will be dependent on the engine you put the blower on. Don't think of it in terms of a number on a gauge, think of it in terms of air flow through the engine. More air = more power. More boost = more heat.

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Old 06-23-2006, 05:57 PM
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Re: 383 build up questions

ok so how can i make mor air flow.does a 383 have more dan a 355 or what
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Old 06-23-2006, 06:05 PM
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Re: 383 build up questions

You should thoroughly think through all the aspects of a FI LT1 before you dive in. It ain't cheap to do it right, and if you don't do it right you would be way better of with a "done right" N/A setup.

IMHO, LT1 F-bodys are not the world's best choice for a blower. Really crowded under the hood, among other things. There are only a few I'm aware of that have turned out stellar.
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Old 06-23-2006, 06:09 PM
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Re: 383 build up questions

well im willing to take that chance.love camaros and want to do something different.
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Old 06-23-2006, 06:17 PM
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Re: 383 build up questions

Originally Posted by jmh96z28
well im willing to take that chance.love camaros and want to do something different.
If you manage to do it for $1000, it WILL be different.
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