Question Procharged or turbo?!?!?!? - LS1LT1 Forum : LT1, LS1, Camaro, Firebird, Trans Am, Engine Tech Forums

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post #1 of 2 (permalink) Old 11-09-2016, 11:39 AM Thread Starter
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Join Date: Dec 2012
Location: milwaukee wi
Posts: 402
Procharged or turbo?!?!?!?

ok, so here we go, please feel free to go nuts and tell me your honest opinion , my boost exposure is limited and ive never boosted a NA car before.

I have an ls1 in my 71 chevelle. and ive always wanted more hp for it via boost.. so thats my plan.. i only want about 475-575 which ive read is completely doable on a stock ls1..
and yes i know i could build the engine, but ide rather do it via boost. and yeah i my tranny will be my weak point, ill build it when it breaks. This car is only driven 1-3K a year. and isnt really "raced" so to speak, aside from showing civic's whats up...

So here goes my questions, discussion... do i go procharger or turbo...

procharger is about 4K+, new 3500 for the kit, plus injectors, boost gauge, and tuning, maybe a few incidentals.

turbo, for a cheap cx twin turbo kit.. well just call it 2500.. + some exhaust work, oil lines (which seem like a pain) ide be doing it via the timing chain cover, as i really dont wanna remove this engine again to do via the pan. plus injectors, gauge and a few other incidentals.. so im figuring about 3500...

The supercharger seems like way less work to install which is why im leaning this way, plus my expensive exhaust already in place wont need to be modified. and for the nominal additional cost why not go this route.

please rant... thanks.....

97 z28 convt, 60k mi. TF heads, 1.6 rr, rods, lifters, comp cam, msd cap rotor coil, full exhaust, Cai, Pcm for less tune , 150 nitrous, no air or egr, tb bypass 3200 stall. 410s. 12.5 spinning on slicks.ugh..
1971 chevelle w ls1 & dakota digital dash, true duals w xpipe, 4whl disc,342s
05 corolla xrs.. one of 5000 made. 00z28convt.
98z28 hard top.. project waiting
89 mustang gt... i know i know..

sold-02 z28 m6, 68 continental sedan, 95TA, 86iroc, 88z28
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post #2 of 2 (permalink) Old 11-10-2016, 06:29 AM
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Join Date: Sep 2008
Location: Fruitland Park,Florida
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I'd go with the super charger if I was in your position. It's a whole lot of work, so anything to make the job easier without sacrificing reliability is good for me.

But ask member shownomercy, he went the turbo route on a lt1 car. He can give you good info on his experience in boosting his car. That is if he will respond. Even though he's a site moderator, he hasn't been on in a while.

My only experience with boost is with a turbo Fiat spider. It was a very mild boost adding only 20 more hp than stock spider engine. And it came from factory like that.

I do know if I was going to boost my car, I'd insist on all forged internals. It's the German in me. But I'll be putting all forged internals in my non boosted lt1 when I get to it.
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