LostCauseZ06

iTrader: (4)

alright i have a slightly stupid question. I have recently been bitten by the turbo bug. i HAVE to have a turbo but i really dont want to swap out my pistons.

How much boost could i get by running on my forged 408 with a high C/R??? any ideas?

sprayjunkie

I would pose this question directly to your engine builder and your tuner.

Retail Value

no more than 5 psi on a VERY VERY VERY conservative tune...

ls1CANTU

iTrader: (9)

would like to know this too.

HUNTER02SS

iTrader: (24)

You could probably run more than 5psi, but you would have to run race fuel with it all the time and no timing I would guess.Not sure though,but you can just buy a set of head's with bigger chamber's and run some thick head gasket's also to help lower the compression.IMOA

KAOS

iTrader: (5)

subscribing. with race gas how much boost can you run with that high of compression. and what would be the outcome, blown head gaskets?

HUNTER02SS

iTrader: (24)

If it was my setup i would run 10lbs of boost and the race gas and play with the timing,but I would not go over 10lbs.What is the stock compression like 10.5 or close to it,so it is not that far off of stock.That is what I would do if it was my car but I like the extreme of thing's anyway.

Ping King

iTrader: (20)

theres a few e85 stations in your area...i would take a look at running e 85

Lythropus

iTrader: (13)

I'm going to say 6 pounds for over 100 horsepower again, don't do it, you won't make as much as with nitrous and it will be more prone to detonation...

ALTRDTA

iTrader: (69)

I say do it Chase and see what you can get out of it. You have the money just burning a hole in your pocket so go for it.... Don't be scared. lol

cws T/A

iTrader: (3)

http://musclemustangfastfords.com/te...pression_ratio

HUNTER02SS

iTrader: (24)

After reading that I woould say boost the hell out of and see what happen's ,especially if have the $ to build another engine if this one on you!!

Speed

iTrader: (33)

How much boost at what octane will be an exercise of trial and error. You obviously will be much more limited, you will extract more power for a given air flow vs a low compression engine. If I had to guess, I would say 10psi on 118 with 15* or so of timing will net you very respectable results. Meth/water injection will help stabilize the mixture if you are picking up knock.

Be vewy vewy cafull and take it slow.

Bad30th

iTrader: (13)

I was making 5-6psi on 11.6:1 on (mostly) 91 octane pump gas for a while before I got new heads. I just pulled the timing back a little and ran a little race gas for extra insurance. It ran great and pulled hard, and it was on the stock bottom end too with a 222/224 cam on a 114 LSA.

I'd buy some larger chambered heads to lower compression before I swapped pistons, seems like a lot less work...

Rob (Bad30th)

smokinHawk

iTrader: (48)

man i sware i just locked one of these
your gonna have to tune and see, there is no set psi to CR to many varilbes
https://ls1tech.com/forums/forced-induction/208864-turbo-faq.html