turimo1

iTrader: (1)

I know that horsepower is not the single factor in determining what octane you run, but I curious to know from the force fed guys what kinda of Hp/tq numbers everyone is putting down with pump gas 91-93 octane. i am trying to find out if you can safely run 600 rwhp on pump gas, with 10.1 comp, 10-12lbs boost.

Boostaholic

iTrader: (4)

It all comes down to how much you want to risk, its very possible you will blow up your motor making max pump gas numbers, pump gas varies and from tank to tank you could see a little variance and pop something, there are just too many factors to keep your car on the edge.

There are lots of things like methonal/water injection that will really help you out, I think the highest pump gas LS1 I know of was mighty mouses car making close to 1000 mark.

Zombie

iTrader: (2)

I ran 11psi in cool weather on my stock motor, but would not reccomend it unless you can babysit the car every time you make a pull. Did 15psi with meth.

*edit* just saw you are supercharged, you might be able to do it with that since it doesn't make the 11psi until high rpms.

30th t/a

iTrader: (51)

from what ive seen on a stock LS1 you should be around 600 with 12psi but you will need race gas. there was a bone stock o4 GTO that made over 600 with 12psi on pump gas and meth. stenod made 600.1 with a bone stock stock ls1 and a incon kit with 11.5psi and race gas.

BUYAMERICAN

Boost, I think he was running 100 or 110.
At least 93. 93, non corn mix does pretty well.
I am sure that he will chime in.

The BTU rating on the new and improved corn gas leaves a lot to be desired.

chuntington101

so is there any limit to the amount of power you could make on pump gas???

what is the max you could ever realisticaly make give the best of everything???

i know nelson rasing get over 1000bhp from there 427 on pump! they do do a lot of work getting very good head to block sealing! and have been doing it for years!!!

thanks Chris.

Stupid Boost

iTrader: (1)

No limit at all...the limit is cylinder pressure.

The Vipers are making 1200+rwhp on 93 pump

Tiago

iTrader: (27)

there is only a limit on bawls or bank acct, because the power can be made, but how much you want to risk it is up to each individual.

I went up to ~860 rwhp on pump... felt taht was plenty.

bboyferal

iTrader: (9)

They have BIG displacement, though (Vipers).

What is this for, 346 10.1:1 CR? 12 psi on Pump? Risky... Must have good FMIC and methanol injection, and even then it's the stock internals that are in danger anyway. Though some crazy people HAVE done 600 rwhp on stock CR, internals, heads, cam, displacement, etc. on pump, it's NOT recommended.

bboyferal

iTrader: (9)

DAMN... what's your displcement again... Not 346, right?

chuntington101

so whats the most realistict cylinder presure you can run before you start to see probelms and what are they???? is it just dept???

thanks Chris.

PRAY HRD

iTrader: (119)

Nitrorocket has seen 752rwhp on his twin 60-1 hifi setup at 14psi using 93 oct ONLY. he has since tuned the car to handle 18psi after swapping to slightly larger 60-1 ball bearing turbo's, but is still only using 93 oct citgo. he has yet to redyno the car, and may not, but figures he's right at 850rwhp if not more. his setup consists primarily of a prepped aluminum block, good internals, low cr, baby cam, ls6 intake, and a decent set of 5.3 heads. nothing spectacular, almost considered a low buck setup when you break it down and very easy to duplicate. it's really a simple, well thought out combo using an A2A intercooler, and will never see meth, n20, or race fuel.

EDIT* yes, stock cubes too bboyferal.

bboyferal

iTrader: (9)

AND, I believe he's at stock cubes.

Quickin

You can run 1300+ HP, safely and reliably, and long-lasting, if its built right, period.

Pro Stock John

iTrader: (34)

Folks can do 1000rwhp... with a BBC and twin turbos. It all comes down to engine size and other factors.

A 427ci LS1 + boost will make more power on pump gas than a 346ci assuming you are using equal technology and parts for each combination.

nitrorocket

iTrader: (12)

I am pushing over 800 RWHP+ with my stock cube ls1 with stock intake, aluminum block, factory heads and crank on 93 octane. I am pushing 18 psi, That is the safe limit, I cannot get away with 19 psi safely on pump, oh well.

With 10:1 compression 12 psi will be real close to your limit. Maybe 650 rwhp???

GrahamHill

iTrader: (6)

If you have enough cashola to continually push the limits of pump gas, then you should have enough money to buy a few barrels of C23, lol.

nitrorocket

iTrader: (12)

I am not pushing any limits... Why would someone waste any money on race gas if they dont need to? This guy wants a street car, you have to be able to fill up at the pump on the go.

Quickin

There are 16 injector intake systems that spray pump gas to a certain hp level, than start spraying race gas. Be safe and squeeze every ounce of power from a set-up.

No brainer.


.

Tiago

iTrader: (27)

yes 346