Compression ratio for 91 octane

Main Menu

Portal
Forums

Nevada Classics

Advertise at CC

November 2025

S	M	T	W	T	F	S
						1
2	3	4	5	6	7	8
9	10	11	12	13	14	15
16	17	18	19	20	21	22
23	24	25	26	27	28	29
30

CC Advertisers

· Kirkham Motorsports
Superformance
· Finish Line
· Hurricane Motorsports
· Serpent Express
·
· Planet Cobra

· Shell Valley Classic Wheels
· Eight Stack Injection

LinkBack

Thread Tools

Rate Thread

Display Modes

#4 (permalink)

01-14-2009, 03:08 AM

Hotfingrs

CC Member

Join Date: Dec 2001

Location: Castalia, Oh

Cobra Make, Engine: EM cobra, 450 inch sbc running a best ET of 9.14..so far..ALL MOTOR...approx 800 horse.............ERA with 482 FE..All Aluminum Engine

Posts: 1,395

Not Ranked

I'm running 11-1 on 94 octane, aluminum heads. I would suspect that with 91 octane somewhere in the 10-10 1/2 range would be the max.

__________________
Jack
XSSIVE .....

« Previous Thread | Next Thread »

Posting Rules
You may not post new threads You may not post replies You may not post attachments You may not edit your posts BB code is On Smilies are On [IMG] code is On HTML code is Off Trackbacks are On Pingbacks are On Refbacks are On Forum Rules

All times are GMT -7. The time now is 09:16 PM.

Contact Us - Club Cobra Home - Archive - Top

The representations expressed are the representations and opinions of the clubcobra.com forum members and do not necessarily reflect the opinions and viewpoints of the site owners, moderators, Shelby American, any other replica manufacturer, Ford Motor Company. This website has been planned and developed by clubcobra.com and its forum members and should not be construed as being endorsed by Ford Motor Company, or Shelby American or any other manufacturer unless expressly noted by that entity. "Cobra" and the Cobra logo are registered trademarks for Ford Motor Co., Inc. clubcobra.com forum members agree not to post any copyrighted material unless the copyrighted material is owned by you. Although we do not and cannot review the messages posted and are not responsible for the content of any of these messages, we reserve the right to delete any message for any reason whatsoever. You remain solely responsible for the content of your messages, and you agree to indemnify and hold us harmless with respect to any claim based upon transmission of your message(s). Thank you for visiting clubcobra.com. For full policy documentation refer to the following link: CC Policy

Links monetized by VigLink