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SC or NA set up

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Old Jun 10, 2013 | 12:13 PM
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Default SC or NA set up

So I had purchased a used procharger set up with flip drive and alky controller. Was goin to install on my 99 FRC, with 140k mile stock block LS1.

The motor runs real strong with no valve train noise or anything like that. Figured if the motor lets go would be a good excuse for a build.

So had been sitting around talkin with some other Motor heads and they kept telling me to go NA, ditch the SC.

If all I want is to go fast straight then SC is fine, if I wanted to do some road course racing in the future the SC was not the set up.

I'm a noob as far as road course racing, so I'm here for feedback.

My buddies tell me to sell the SC setup, and for what I'd end up having in it once installed and tuned I could purchase a nice 427 crate motor.

Here's what I'm looking at for a engine swap, says it drops right in my C5.
luePrint Engines PSLS4271CT - BluePrint Engines Pro Series Chevy LS 427 C.I.D. 625HP EFI Drop-In Base Crate Engines

I though I would check here as well on just how easy this will go in my car. I understand clutch, trans, diff upgrades are in order as well. Which at this point in the cars life are prolly due.

Was lookin forward to the SC install, but now my buddies have me rethinking the whole set up

Joe

Last edited by Cedarberry; Jun 10, 2013 at 12:15 PM.
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Old Jun 10, 2013 | 06:47 PM
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If you plan on lots of road racing, I agree with your friends to stay NA.
I just drive on the streets, and my SC is tons of fun, if a bit too much of a good thing. I still have stock cooling, and so far....
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Old Jun 10, 2013 | 07:10 PM
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Really need more info on the 427. A 4.125 stroke in a 4 inch bore will yield 427CI but that long stroke doesn't offer much piston support at BDC an will lead to increased wear as compared to a 4 inch stroke and a 4.125 bore.
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Old Jun 10, 2013 | 07:14 PM
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Stock LS3 block is what, 4.03-4.06?
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Old Jun 10, 2013 | 07:18 PM
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I would consider what you already spent on the SC kit and what you think you can sell it for if at all. If you have time, put it up for sale, see what kind of bites you get, and if you can get your money back, sell it and do the crate motor. If you cant sell it, then use it. A lot of us prefer N/A, but you will make a lot of N/A guys butt hurt with the SC kit all the same.
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Old Jun 10, 2013 | 09:01 PM
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Originally Posted by WKMCD
Really need more info on the 427. A 4.125 stroke in a 4 inch bore will yield 427CI but that long stroke doesn't offer much piston support at BDC an will lead to increased wear as compared to a 4 inch stroke and a 4.125 bore.
Here's a link to the motor my buddy says will fit fine with a few minor things to make er fit a C5.

Lmk what you think, thank you
Joe


http://m.summitracing.com/parts/mll-...71ct/overview/

Last edited by Cedarberry; Jun 10, 2013 at 09:12 PM.
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Old Jun 10, 2013 | 09:11 PM
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Originally Posted by NukeC5
I would consider what you already spent on the SC kit and what you think you can sell it for if at all. If you have time, put it up for sale, see what kind of bites you get, and if you can get your money back, sell it and do the crate motor. If you cant sell it, then use it. A lot of us prefer N/A, but you will make a lot of N/A guys butt hurt with the SC kit all the same.
Been pondering it for a few days now. Was yackin with my body shop guy today, he's doin the wide booty work for me. He said I should just find another high mile FRC/Z06, cheap, cheap. Condition really won't matter as we would just make it a track car, with new motor and drive train.

Then I'd have the boosted FRC for the street. Said he could find one at auction pretty easy.

So a bit more cipherin to do, I had planned on taking the boosted car to the Texas mile this fall. Really wanna do that event, so leanin towards goin thru with the SC install, build a track car over the winter.

Joe
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Old Jun 10, 2013 | 10:22 PM
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Originally Posted by Cedarberry
Here's a link to the motor my buddy says will fit fine with a few minor things to make er fit a C5.

Lmk what you think, thank you
Joe


http://m.summitracing.com/parts/mll-...71ct/overview/

Pass. I don't like that bore/stroke combo. You can do better for $9K.
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Old Jun 11, 2013 | 01:10 AM
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I'm curious why they say the SC is not good for road racing when the C6 ZR1 set the record at Laguna Seca for fastest production car.
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Old Jun 11, 2013 | 01:23 AM
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Originally Posted by Mike94ZLT1
Pass. I don't like that bore/stroke combo. You can do better for $9k
This is what worries me, as you see a lot of guys having problems with shops and builds. I was leanin towards the crate motor with warranty.

So already a Gm certified tech is a bit off on what engine will work best on the track. If ya don't mind Mike, if you know of a crate motor with warranty that's meeting what you feel would work best I'd appreciate your input, or a few specs to look for on a engine

Thanks
Joe
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Old Jun 11, 2013 | 06:40 AM
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Originally Posted by Mike94ZLT1
Pass. I don't like that bore/stroke combo. You can do better for $9K.
A 418 ci build based on an LS3 block with a 4 inch stroke is a much stronger setup and for 9 cubic inches it's a no brainer with your intended use.

FWIW: I run a Darton sleeved LS2 block with 4.125 bore and 4.00 stroke.
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Old Jun 12, 2013 | 01:30 PM
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Originally Posted by Rookieracer
I'm curious why they say the SC is not good for road racing when the C6 ZR1 set the record at Laguna Seca for fastest production car.
Say what you want about GM, but the engineers did a helluva job designing that for cooling and heat sink issues. To replicate that aftermarket in a C5 seems to be pretty expensive and not as fruitful. If you are doing road courses no more than 3 or 4 times a year, the sc will be fine and frankly, a lot of fun. It is when you are tracking frequently enough that your skills start pushing the car more that you run into issues like, cooling, heat sink, belt slip, and the infamous lean #7. After I blew up my sc LS6, I repl with forged n/a LS2 that made a little less rwhp, but had more useable hp and was faster at the track. When my hardcore tracking days are over, I will be in a sc C6 of some kind

Good luck with choice.
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