Blower carbs
#1
Blower carbs
I am new to blowers and I am looking for information on how to set up carbs to use on a 6-71. It currently has a couple Holley 600's on top and it seems to be running very rich. I think the carbs are flowing all barrels at an idle. Should the power valves be changed? This is a 355 cid with a B&M blower.
Thanks. fla1976
Thanks. fla1976
#2
Senior Member
RACING JUNKIE
Join Date: Sep 2007
Location: Montvale, VA
Posts: 1,431
SA Designs has a book,think it's called "Supercharging for the Street".Got mine at Barnes & Noble.Has a section in the back on setting up blower carbs.Not real confusing,but pretty detailed.Has Holleys and Carters.Has info on how to size powervalves,air bleeds,tuning idle mixture,the works.I would start there
#3
Member
JUNIOR BUILDER
Join Date: Jul 2003
Location: U.S.A.
Posts: 80
One is to make the power valves " boost refrenced " which really isnt a terribly difficult mod to do, I can PM you the mod info if interested. The other is to use 10.5 Power Valves.
The 10.5 PV deal I heard from a guy who has been playing with Roots type blowers since the early 60's and has been using this method for over 30 yrs. I have never tried it, but in theory it should work fine.
The 10.5 PV deal I heard from a guy who has been playing with Roots type blowers since the early 60's and has been using this method for over 30 yrs. I have never tried it, but in theory it should work fine.
#4
Junior Member
SHOW GUEST
Join Date: Oct 2006
Posts: 1
Re: Blower carbs
Originally Posted by fla1976
I am new to blowers and I am looking for information on how to set up carbs to use on a 6-71. It currently has a couple Holley 600's on top and it seems to be running very rich. I think the carbs are flowing all barrels at an idle. Should the power valves be changed? This is a 355 cid with a B&M blower.
Thanks. fla1976
Thanks. fla1976
High 9s 135 mph 60ft 1.210
Also what are percent are you at your pulleys o/u? I went thru hell just to get down the track after I finished my motor but it takes time and tunning, hope anything I said helps