dumb question: 91 octane

Reply Subscribe

Thread Tools

Search this Thread

Feb 21, 2002 | 07:54 PM

Dave Jones

Thread Starter

On The Tree

Joined: Dec 2001

Posts: 100

Likes: 0

From: San Jose CA

dumb question: 91 octane

Dumb question: Can an LS1 run, say, 7 pounds of intercooled boost on California 91 octane gas and standard timing?

Feb 21, 2002 | 08:06 PM

Black LS1 T/A

Moderator

Joined: Nov 2001

Posts: 3,048

Likes: 12

From: Raleigh, NC

Re: dumb question: 91 octane

I don't think so...

Feb 21, 2002 | 08:33 PM

Blackbird

TECH Addict

Joined: Nov 2001

Posts: 2,659

Likes: 1

From: Bellevue, Wa

Re: dumb question: 91 octane

seriously doubt it.

tuning a friends powerdyne car now with ls1-edit.
sees 7psi at redline, no intercooler, 91 octane.
we have to pull from 8-10 degrees of timing along the curve to not ping.
so with the intercooler you could probably get away with only pulling 4-6?????

pure guesstimation.

Feb 21, 2002 | 08:53 PM

red ws6 99

TECH Fanatic

Joined: Nov 2001

Posts: 1,190

Likes: 0

From: Las Cruces, NM

Re: dumb question: 91 octane

I get up to 3 degrees of knock on 91 with no boost, in the summer and thats with no boost just NA. I will most likely be mixing in some 104 unleaded with every tank whenever there is boost.

Gary