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

stock bottom LE2 cc306 and 5psi?? hp est

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Old 02-06-2011, 12:28 PM
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Default stock bottom LE2 cc306 and 5psi?? hp est

Im going to be installing a stock short block with LE2 heads and a new cc306 cam with 1.6rr. What RWHP range should this combo yeild?

And i also will be installing a sts t67 turbo with a 5 or 7 psi spring, how much rwhp will the turbo add to the motor?

Is 36lbhr injecters going to work with a walbro 255 and a hotwire kit?
i think i may have a booster pump from an old nitrous kit already, but i need to double check still.

I know its hard to tell what the numbers will be a just wanted a close area to guess, can i make over 415rwhp with LE2 and cc306 and add the sts and be over 500rwhp? It will have an low mount alt and thats it,36lb injectors,long tube headers and y pipe 3 to feed sts,msd digital 6 and msd coil and wires to feed spark, stock water pump!!!!!

Also what length and kind of pushrods should i use? thanks so much for any responces
Old 02-06-2011, 12:33 PM
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Stock short block. If you are spending that kind of money on the top, why are you not beefing up the bottom?
Old 02-06-2011, 12:34 PM
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I would not run that cam on a turbo motor. I would get a custom grind for a turbo setup.. Also i would think those injectors will big enough on turbo motor. You need to check wat lenght pushrod u need. You pick up a checker for summit for like 10 bucks
Old 02-06-2011, 02:08 PM
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you might be able to get away with 42lb injectors and 255 pump, but pretty sure 42's max a little over 500whp tho so i'd say go with 60's
Old 02-06-2011, 05:27 PM
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At the least change the freakin rod bolts.
Old 02-06-2011, 05:39 PM
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I wouldn't boost any engine without all forged bottom end and splayed 4 bolt mains.
Old 02-06-2011, 05:50 PM
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Originally Posted by 97Z28SS
I wouldn't boost any engine without all forged bottom end and splayed 4 bolt mains.
Lol..
Old 02-06-2011, 06:23 PM
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Absolutely the wrong cam for boost! SPRAY IT!
Old 02-06-2011, 06:23 PM
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Ask Dr.Phil
Old 02-06-2011, 06:32 PM
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Sounds like a big box of fail.
Old 02-06-2011, 06:47 PM
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If your fuel and timing are OK then it should live as long as you don't get greedy with th boost, think conservative on boost and liberal on the fuel.
Old 02-06-2011, 06:49 PM
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Wow we got all kinds of funny awnsers. first things first if i was building the bottom end i think i would be running more than 5psi on the sts turbo kit...... Next the camshaft chioce, i called comp cams and they speced me out a cam very close to the CC306 i already had. IM going to try the cam out to see how it does, 3 engine builders i know said it works great on nitrous and maybe great on bosst if i keep it under 12psi of boost. im not building an all out race engine, its a stock bottom end with les heads and 5psi so pulling the motor apart for splayed caps and forged everythiong is a bit much,if i was asking about a higher psi then of course better bottom end parts are need. Please read before you post dumb replys. wrong cam this and that, have any of you run this cam on a boosted motor before?
Old 02-06-2011, 06:53 PM
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I meant to say the injectors will not be big enough. I would save $ on the sts and buy a plate kit. That setup would work good on spray
Old 02-06-2011, 06:55 PM
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The cam is not ideal, but it will run...just not optimum. The problem is you need a wider seperation on the lobes and you need to close the valves so that the boost is not blown out the exhaust but you maintian exhaust veloctity, which can be done by pipe size.
Old 02-06-2011, 06:57 PM
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why is it ok for ls1 guys to run a G5X3/4 with a blower and it make wicked power and not ok for a cc306 and a turbo.. i would imagine its going to make power. i say do it.
Old 02-06-2011, 06:59 PM
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Originally Posted by joshh123
why is it ok for ls1 guys to run a G5X3/4 with a blower and it make wicked power and not ok for a cc306 and a turbo.. i would imagine its going to make power. i say do it.
Because it's an LT1 and the experts will come to your house and paint fail on your car.
Old 02-06-2011, 07:16 PM
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compcams sure think its going to make great power under 12psi of boost,they said anything above that go with a 114lsa and a diffrrent cam.

Im going to run it and post what i makes before i run the sts. and after its hooked up if time permits me to do so. Some of these responces are non sence and unless you have experiance with running a set-up like this or tuning a set-up like this how would you know? o thats right you read it on another form or thread somewhere. i know this cam makes great power with nitrous, been there done that and it was lame, and when the juice ran out it was just another cammed SBC. now it will be H/C/5 or 7psi stock short block. when the bottom goes out or i can afford a new bottom end then 12 or higher psi will be used and the cam will be replaced. I want to see what the cc306 does on boost. i just wanted some hp area to shoot for before boost and after, but thats ok.
Old 02-06-2011, 07:41 PM
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On a turbo LT1, I wouldn't run any cam below 113lsa. Too much boost going right out of the exhaust. And it doesn't matter if its 4lbs or 15lbs. There is just too much overlap. With nitrous, you can get away with running a tighter lsa. Run the cc503 or something that's a little bit more mild. The cc306 is a little bit out of the rpm range you will want to push the stock block with boost anyways.
Old 02-06-2011, 07:48 PM
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i have ran all my lt1 into the 6500 rpm + range....
Old 02-06-2011, 09:02 PM
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My response wasn't stupid your engine won't last long on boost with a stock bottomend. I was trying to be helpful and honest with you, you are free to do as you like, but I'll keep my eyes peeled for your new post about your blown engine and new all forged splayed mains build.


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