Club Cobra Gas - N Exhaust  

Go Back   Club Cobra > Engine Building, Tuning, and Induction > 429/460 Engine Talk
427 Side-oiler - approx. horsepower? 427 Side-oiler - approx. horsepower?
Portal Register FAQ Community For Sale Gallery Calendar Today's Posts

MMG Superformance
Nevada Classics
Main Menu
Portal
Forums

Module Jump:
Nevada Classics
Nevada Classics
MMG Superformance
Advertise at CC
Banner Ad Rates
MMG Superformance
MMG Superformance
MMG Superformance
March 2026
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 31        

Kirkham Motorsports

Reply
 
LinkBack Thread Tools Rate Thread Display Modes
  #1 (permalink)  
Old 12-06-2009, 07:05 PM
Gunner's Avatar
CC Member
Visit my Photo Gallery

 
Join Date: Sep 2009
Location: Sacramento, CA
Cobra Make, Engine: ERA 707, 446ci FE
Posts: 1,115
Not Ranked     
Default
Danbury's numbers seem... conservative. Which is proper, I think.

Roller rockers with a higher ratio, even a bit, would add 40-50HP, easily.
__________________

= Si Opus Quadratum vis, angulos praecidere noli. =
Reply With Quote
  #2 (permalink)  
Old 12-06-2009, 07:12 PM
patrickt's Avatar
Half-Ass Member
Visit my Photo Gallery

 
Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 22,025
Not Ranked     
Default
Quote:
Originally Posted by Gunner View Post
Roller rockers with a higher ratio, even a bit, would add 40-50HP, easily.
Erson's are 1.76 -- I guess it's possible that he had 1.73's in there. If he had a lift at the lobe of, say, .306 the difference at the valve is only .010 by moving up the RA ratio -- but the Erson's are awfully nice. I have them on my engine, in fact.
Reply With Quote
Reply

« 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


All times are GMT -7. The time now is 02:55 AM.

Contact Us - Club Cobra Home - Archive - Top

Powered by vBulletin® Version 3.8.0
Copyright ©2000 - 2026, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.0
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