wildn347

iTrader: (19)

i am about to buy my first ls1 and i was wondering what is the trans ams tuned for 87 octane or 91-93???

NHRAMAN

iTrader: (1)

Minimum 91 octane...........the Compression Ratio is 10:1 ........fairly high...

orangeirocz28

iTrader: (2)

93++++

foreverzero

iTrader: (5)

+1, I always run shell or bp's premium

SSmoken

iTrader: (26)

manual says nothing less than 91 i think, i run 93 all the time.

5301113

iTrader: (18)

Minimum 91 octane less could hurt your car

wildn347

iTrader: (19)

thats what i thought thanks guys

NHRAMAN

iTrader: (1)

that is what I said---------------------" MINIMUM 91 " ---91 Octane WILL NOT HURT A STOCK CAR AT 10:1 COMP. RATIO. Unless u r beating on it ALL the time...then u should run MINIMUM 94 Octane.

NHRAMAN

iTrader: (1)

Yes..manual says 91 Octane.

5301113

iTrader: (18)

I didn't say 91 will hurt the car (less) 87

LS1>Imports

iTrader: (2)

93.... is the way to be

KENS_SS_4

The computer quickly detunes the engine if knock is detected, preventing damage. So 87 or even substandard fuels will run the engine. Just don't expect to get the best mileage or peak power.

Minimum 91 gives the best performance overall and is the design standard.

SOM02WS6

For everyone that likes to run higher than 91 if your car doesn't knock and doesn't pull any timming then 91 is the way to go. You car will make the most power at the point right before it knockes because it is able to use all the fuel..

kevin's_00ss

Try running bio-desieal

Vai

I use bp's 93.

RPM WS6

iTrader: (3)

I use 116 in all my stock cars for best power. When I want good MPG, I just switch them over to diesel. I've been doing this for about 10 years, it works great.



(wow I hope nobody actually takes that seriously!)

CAMAROZ28SS

iTrader: (5)

i use 93 all the time

if u add up how much u save by getting 87 you only save like 2.00. plus your putting crappier gas in your car

WS6_Suicide_Machine

iTrader: (6)

So is California the only state where the octane rating only goes as high as 91? cuz ive never seen 93 in my life. (granted im only 18)

lov2xlr8

iTrader: (7)

The majority of Oklahoma is 91. There are a few places where you can get 93, but they are few and far between. I run 91 in the Camaro and 89 in the daily driver. I spent some time in New Mexico, they had gas as low as 84 I believe. I was flabbergasted, had to resort to some Toluene ghetto-octane-boost to make it though. As for the fbodies, you can run 91 no problems. When you start changing the compression ratio, or adding boost you'll need a higher octane rating.

WS6_Suicide_Machine

iTrader: (6)

From my very limited knowledge aren't the stock LS1's 10.0:1 ratio? And inst it only after u pass 12.0:1 barrier you need to step up to 100 octane?

I used to only work with old carb motors, i only just got into the LS1 game. so anything new i can learn is a step in the right direction.