forgedlt4

I have a LT1, Blow thru Carbureted, forged 383 shortblock, LT4 heads, and a front mount turbo


problems is, its 11.3-1 compression... and pump gas (93)

I do have meth injection

Would it be possible in ANY way to run 7-8 lbs of boost on 93 octane?

otherwise, ill have to switch to E85

forgedlt4

Also, it currently has a STOCK lt1 cam in it

forgedlt4

well. it HAS been done... but with E85

88lt1

I have a 383 lt1 with 10.99cr in an 88 chevy truck. MP70 rearmount running 6 psi on the street and 9psi at the track with 93 and meth inj. I plan to push it to 10-12 in cooler weather.

forgedlt4

i am currently running 2 deg timing, and 8 lbs on E85 with no issues.

i am going to up it to 10 lbs here in the next week or two

Nitroused383

iTrader: (10)

You need to turn the timing up a lot, you're going to be melting **** and putting a ton of heat into your exhaust with such little timing.

forgedlt4

lol.... sorry, I am running 22 deg timing.

i honestly dont even think it could run on 2 deg

im going to throw 2-3 more lbs and a another deg or two of timing and see what happens.

Nitroused383

iTrader: (10)

Hahaha that sounds a lot better! I was kinda thinking to myself; damn this guy must be thinking this thing is a turd with 2 degrees haha.

87silverbullet

iTrader: (11)

I think it can be done on pump 93 because you are carb'd. The carb kinda acts like meth injection on an efi car, cooling down the intake charge before it hits the cylinders. I would make sure you turn the timing way down to keep detonation at bay and watch your tune. I would go no more than 6 psi though.

Brigger18

iTrader: (20)

Tune??? what tune???

forgedlt4

i tune with a wrench and screwdriver. hahaha

Bob@BruteSpeed

iTrader: (16)

Back at the old EPP shop we did an APS turbo on an LS2/402 11.0/1 Firehawk. 93 octane and 100% methanol and it ran great at 7 psi. You have a wet intake manifold which will help, I don't see you having any problems once you get it dialed in. Bob