LT1 supercharger?
Pro
Joined: Jun 2001
Posts: 697
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From: College Station Tx
Re: LT1 supercharger? (Glock'94)
If you can swing a rebuild soon after the blower install then no problem, but if you couldn't afford to do a rebuild then the blower is probably not a good idea on a stock shortblock. You may get a few miles without it blowing up or you may not - it will really depend on your dilligence and level of tune, as well as luck 
.
Doing the buildup before hand is really the way to go - you could use stock crank, rods, and just some dished SRP's for a low buck setup, and it would be much more reliable (as well as make more power potentially).
I would also recommend a S-trim. If you can get the HD version - this comes with better bearings and is upgradable to a T-trim.
.Doing the buildup before hand is really the way to go - you could use stock crank, rods, and just some dished SRP's for a low buck setup, and it would be much more reliable (as well as make more power potentially).
I would also recommend a S-trim. If you can get the HD version - this comes with better bearings and is upgradable to a T-trim.
Team Owner
Joined: Apr 2001
Posts: 22,267
Likes: 3
From: Dallas TX
Re: LT1 supercharger? (ChrisB)
Oh yeah, NO WAY i'm putting a blower on here instead of rebuilding it. Now, if I come into an extra ~$5k after I rebuild.. THEN it will be happy time.. with a nice Vortech :smash:
Safety Car
Joined: Jul 2001
Posts: 3,524
Likes: 1
From: Pinellas Florida Misfit
Cruise-In III Veteran
Re: LT1 supercharger? (Glock'94)
stupid question here.. but why is it Buick was able to run the turbocharger on a regular V6 with insane amounts of boost, but the SB chevy's can't take a mild about of boost from a sc?
I personally use to run 20-22 psi on my GN, ran it for 3 years that way on a stock motor.
I personally use to run 20-22 psi on my GN, ran it for 3 years that way on a stock motor.
Race Director
Joined: May 2001
Posts: 14,165
Likes: 9
Re: LT1 supercharger? (two-tone86)
It all has to do with the compression ratio and the strength of the motor. Realize that Buick v-6 is probably running something like an 8.5:1 compression, while a vette is around 10.5:1. That would make the vette tend to detonate more than the Buick. High boost = lower compression. Also the strength of the pistons has a lot to do with it, and strength is something that the LT1 pistons don't have much of.
Melting Slicks
Joined: Mar 2001
Posts: 2,153
Likes: 305
From: Timra, Sweden
Re: LT1 supercharger? (two-tone86)
What was the compression ratio on the GN? Forged pistons?
In my opinion supercharger won't put much more stress on the crank / rods as long as you dont rev it more or get knocks. With lower compression ratio you can use more boost without knocks.
400 hp at 5000 rpm is better for the engine than 400 hp at 6500 rpm.
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Safety Car
Joined: Jul 2001
Posts: 3,524
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From: Pinellas Florida Misfit
Cruise-In III Veteran
Re: LT1 supercharger? (JoBy)
8:5 to 1 compression and right off hand I can't recall if they came with forged pistons, I'm almost positive they didn't.
I can't see why running 6 psi of boost on a sb would be incredibly harmful... but of course, I could be wrong
I can't see why running 6 psi of boost on a sb would be incredibly harmful... but of course, I could be wrong
Drifting
Joined: Jun 2000
Posts: 1,765
Likes: 0
From: na
Re: LT1 supercharger? (two-tone86)
I asked about a supercharger here in the CF and there is more information there if the thread still exists.
I wonder about passing emissions also. The "rebuilt" engine may have a lower compression also so as to stand up to the boost.
If you think about it all of the Corvettes competitiors that used turbo's etc have been killed off by the natural aspriated V-8. The Supra et all are gone. It said right on the Supra page that the reason for dropping the car was the failure to meet emissions. That page was removed after I quoted it.
The engine in the Z0-6 is up to 400 hp now and it meets all conditions. Thats the engine to get or to copy. That's my opinion anyway. For racers or cars towed to the track another answer may be correct. But right now the path of least resistance speed wise is just to buy a newer Corvette.
I wonder about passing emissions also. The "rebuilt" engine may have a lower compression also so as to stand up to the boost.
If you think about it all of the Corvettes competitiors that used turbo's etc have been killed off by the natural aspriated V-8. The Supra et all are gone. It said right on the Supra page that the reason for dropping the car was the failure to meet emissions. That page was removed after I quoted it.
The engine in the Z0-6 is up to 400 hp now and it meets all conditions. Thats the engine to get or to copy. That's my opinion anyway. For racers or cars towed to the track another answer may be correct. But right now the path of least resistance speed wise is just to buy a newer Corvette.
Safety Car
Joined: Jul 2001
Posts: 3,524
Likes: 1
From: Pinellas Florida Misfit
Cruise-In III Veteran
Re: LT1 supercharger? (dgoodhue)
After doing some searching, it looks as if the GN's were 8.0:1. I rember them being in the 8's at 7.8 sounded kind of low.
What effect would say 6 psi have on an early L98 with 9.0 compression?
What effect would say 6 psi have on an early L98 with 9.0 compression?
