RRR

looking at putting around 7psi through a powerdyne sc on a stock 350 with studded 2 bolt mains and ported heads, mid sized cam, mac headers, no cats through a catback.

Now the car is a 68k lt1 with stock pistons but I if I decide to do this it will be with an alcohol/water injection setup. Wondering if it will survive even with that? car will be dyno tuned and running 42# injectors

car should be making close to 400 at the wheels before the sc any guesses as to what the 7# boost will add?

RRR

this projected psi would be with a 9# pulley (most claim they see 6# with this one) and a bigger k&n air filter. Was also wondering what boost increase could be had by replacing the flex hose in this kit?

jerminator96

I wouldn't really worry too much about boost increase. Your main concern should be making enough power to satisfy your needs and just hoping it will survive long enough for you to save up the money to build a replacement shortblock.

Boosted_Z28

There are lots of people who have successfully run a S/C or turbo set-up on a stock bottom LT-1 for a while, myself included. The age old question is 'How long???" Water injection has similar effects on a motor as an intercooler does, so it's logical to presume that a water injection kit will lower the chances of engine damage when putting boost to it. But, as it's been posted here many times before, a stock bottom end LT-1 was not designed to safely run any kind of F.I. on it, so it is only a matter of time. AND as my of us can testify, boost is very addictive.

vortec97

i want boost

CALL911

Short answer to your thread question; "no".

Many people bring this up often and the answer is the same. Even with a perfect setup with the correct supporting mods (methanol injection, intercoolers, fuel system, tune ect.) you still are putting wear on your high CR motor that was not meant to run FI. You may last a while (maybe 25,000 miles at most), or you might not make it 2500 miles. Either way your money is better spent on a good H/C/I setup rather than dumping all the money in a lightly boosted setup which will yeild you minimal power increases.

Or just save up when you can build the motor for moderate to high levels of boost so you can really enjoy the large boost levels and HP gains safely without worrying about when the motor will go "boom".

That Camaro Guy

If the motor wasn't built for boost it most likely won't take it for long. The rings aren't gapped for it stock, nor are the head gaskets up to the task. Mine ran for about 8 months on 5lbs from a powerdyne with a dyno tune.

-Pete-