What octane gas for 11.60 scr and 8.80 dcr?

Reply Subscribe

Thread Tools

Search this Thread

05-09-2008, 02:49 PM

Stroker2112

TECH Apprentice

Thread Starter

Join Date: May 2006

Location: Nebraska

Posts: 308

Likes: 0

Received 0 Likes on 0 Posts

What octane gas for 11.60 scr and 8.80 dcr?

Anybody running the above scr/dcr on 91 octane?....

Reply Like

05-09-2008, 06:28 PM

DaveX

TECH Fanatic

Join Date: Feb 2004

Location: Lexington, KY

Posts: 1,259

Likes: 0

Received 0 Likes on 0 Posts

Mine is 11.3 and 8.7. Premium here is 92 - 93 octane and I'm not seeing any KR. You might be ok.

Reply Like

05-09-2008, 08:03 PM

allngn_c5

TECH Senior Member

iTrader: (3)

Join Date: Apr 2006

Location: Western Burbs of Detroit

Posts: 6,524

Likes: 0

Received 1 Like on 1 Post

Can you tell us about your setup and so we can see what h/c you used to get those compression numbers. 93 octane should be fine, as long as the tune is good.

Reply Like

05-10-2008, 10:07 AM

Stroker2112

TECH Apprentice

Thread Starter

Join Date: May 2006

Location: Nebraska

Posts: 308

Likes: 0

Received 0 Likes on 0 Posts

Allngn c5,

The head/cam combo - ported 243s (62cc) with a 236/242, .595/.598 lift, 112lsa,108icl cam... with a .041 quench...

Reply Like

05-10-2008, 10:09 AM

Stroker2112

TECH Apprentice

Thread Starter

Join Date: May 2006

Location: Nebraska

Posts: 308

Likes: 0

Received 0 Likes on 0 Posts

92 octane is the highest around here...

Reply Like

05-10-2008, 12:44 PM

allngn_c5

TECH Senior Member

iTrader: (3)

Join Date: Apr 2006

Location: Western Burbs of Detroit

Posts: 6,524

Likes: 0

Received 1 Like on 1 Post

I say you would be ok using 92 octane. If you starting getting KNOCK then you may have to pull a couple degrees of timing from your tune.

Reply Like

Reply Subscribe