wrd1972

Other than more HP what are the long term effects of 8-9 pounds of boost on my engine. See signiture.
I dont know much about superchargers but engine life is of great concern. I understand that greater performance will take its toll but I dont want the process greatly sped up.
I may consider an ATI or Votech down the road.
Also at this point in time I do not want to tear into the engine in terms of rebuild, pistons or heads.

I simply want somthing that will not destroy the engine.
Thanks

detroit1994z28

I would go 5psi with a good dyno tune. 8-9 pounds is not going to last you very long on a stock engine. But I would defently go 5psi on a stock engine and have it dyno tuned. It will defently last you allot longer then running 8-9 # of boost - Mike

wrd1972

What type of supercharger do you reccomend in the 5PSI range and what are the expected gains?
Thanks

Procharged94Lt1

If you only want 5lbs and are going to stick with a stock cube motor then perhaps a powerdyne would be fine. Vortech also makes a smaller boost kit for the LT1's.

If you are thinkin more boost later down the road then I would lean more towards a bigger one that you can just pulley down to 5lbs, that way you don't have to buy a bigger blower down the road..

detroit1994z28

I would stay away from powerdyne. I would defently do a procharger. There fore you can always have more power later down the road for a forged motor. I'm currently running a turbocharger on my stock lt1 engine 5psi - 7psi on high power with methonal. - Mike

wrd1972

Check out my sig.
What are the no BS gains I can expect from 5-6 ponds of boost.

RealQuick

5-6psi should net some good gains...

S/C...perhaps 80-110rwhp

turbo...perhaps an additional 20-30rwhp more than S/C.

Ported heads and a good FI cam will net you even more rwhp/psi.

rskrause

I don't think a SC or turbo should be used on a stock LT1. It will not last with any more then 5-6psi of boost. At that level, the hp gain is pretty decent (especially if you have good headers and exhaust system), but the performance gain is not as great as you would think. It's not like the rocket sled that the hp numbers seem to suggest, perhaps because the most dignificant gain only occurs over a relatively narrow rpm band.

If you want a big perfomance boost on a stock motor, get a good nitrous setup. With all the bells and whistles (including remote bottle opener, heater, spare bottle, window switch, etc.) it's gonna cost ~$1,200 versus >$3,000. There will be a MUCH larger performance increase and less chance of blowing it up (if you stick to about 100hp shot).

Rich

wrd1972

Thanks for the reply, I am not going to use NOS on my engine. I know it performs well but its not for me. I dont race, I just like to give it hell from time to time. I would not mind picking up a used 5-6 pound blower somewhere.

Kevin Blown 95 TA

Re: Long term effects of 8-9 pounds of boost....

Your ring lands will break sometime.

ramair96ws6

8-9#s of boost for me 30,000 + miles 6 years + of fun and im no sweet heart on it either. motor is still running strong. last dyno pull 3 months ago it made 426rwhp to the wheels down from 449rwhp 6+ years ago

5.0THIS

There wont be any long term effects, because your motor wont be around for a long time.

Kevin Blown 95 TA

Wonder where your 20 hp went?

Mine ran 11.8 @ 121 with no traction & one broken piston (#1). Then it went 12.003 @ 119 with no traction & 2 broken pistons (#1 & #7). Then it went 12.4 @117 with no traction, 2 broken pistons, a blown head gasket, and a partridge in a pear tree.

OBE1 95Z28

8 - 9# of boost must be intercooled or you'll be fighting high intake temperatures that will cause detonation.

slimdawson

I have had 8.5-9 lbs on my stock LT1(except bolt-ons) for about a year and half with no problems. I have put more mile on it than the time suggest however. I had the blower on for 8 months without a tune although I tried to keep my foot out of it most of the time. I know my tune is right now so I go full throttle often.

You have to be smart though. If you race it, give it a chance to cool between runs. Don't play with the rev limiter. Keep the oil clean and the motor properly maintained. Be sure of the tune.

Every motor is different though. I was fortunate enough to have a sound motor so mine has held up.

I do agree with the performance aspect. I made 456hp to the wheels with my setup but was disappointed with the times. I can greatly improve on them with traction and shifting but they will still be a little disappointing I'm sure. The aforementioned nitrous is a good idea, especially since you want to play "time to time". I went quicker with 80 less hp(with n2o) and running less than 10:1 a/f. But you know what you want, so that is what matters.

Long term effects; just depends.