View Single Post
  #24 (permalink)  
Old 12-04-2009, 10:51 AM
csx wnab's Avatar
csx wnab csx wnab is offline
CC Member
Visit my Photo Gallery

 
Join Date: Mar 2008
Location: fremont, ca
Cobra Make, Engine: superformance/427 fe ford
Posts: 436
Not Ranked     
Default 830 cfm

Quote:
Originally Posted by Tom Kirkham View Post
The best running carbs we have used are modified Holley 9381 (830 CFM, with annular boosters). We mill the air horns and restrict the PV circuit. We also tune up the accelerator circuit (cams and squirters). This carb is very drivable, but will be down about 10 HP on a dyno to an 850 DP. In light weight cars with big engines I prefer mechanical secondaries. The other good thing about this carb is it is one of the least expensive Holley carbs you can buy.
i'll have to agree with tom, i have been running this carb on a couple of different types of cars. first on my dragrace chevelle with 502/4sp combo. and now on my 427 cobra. just some re-tuning and what a great carb. instant throttle response and if you keep your foot out of it........desent milage too. i love those 9381s.
__________________
1952 MG TD - 53 HP 1970 SS454 Chevelle - 900hp 2007 spo2669 - 485hp 2001 Spclconst. softtail - 114HP 2006 Roadglide - 88HP
sold Roadglide.....bought 09 XR 1200 - 90 hp stock
i would rather live one day as a lion, than one thousand days as a lamb.
Reply With Quote