8896 baseline ???

Old 06-30-2007, 06:32 PM
  #1  
dragharley1
Junior Member
SHOW GUEST
Thread Starter
 
Join Date: Dec 2004
Posts: 8
Default 8896 baseline ???

motor 565 afr 345 heads ,9.8 to 1 ,cam 739 lift 270 at 50 dur , 2-1/8 headers ,8896 1050 dominator ...runs rich at idle and top end ...(black smoke out exhaust)
is there idle feed restrictors i can reduce to get cleaner idle in this carb?
i know just needs some jetting work just trying to get a starting point..

do you guys run power valves?
thanks in advance
dragharley1 is offline  
Old 06-30-2007, 06:52 PM
  #2  
dragharley1
Junior Member
SHOW GUEST
Thread Starter
 
Join Date: Dec 2004
Posts: 8
Default

sorry forgot to mention car sees a lot of street time ...
dragharley1 is offline  
Old 07-03-2007, 05:53 AM
  #3  
oobob
Member
MASTER JOURNEYMAN
 
Join Date: Dec 2005
Location: Building shelves for wally's
Posts: 36
Default

Start with 86 jets in both sides and 4.5 power valves with the mixture screws 1-1/4 rounds out from softly seated.



Mark
oobob is offline  
Old 07-03-2007, 10:16 AM
  #4  
badbug3
Member
JUNIOR BUILDER
 
Join Date: Jan 2004
Posts: 77
Default

i had same problem and pro systems fixed it and also gave me more horsepower. I have a 572 bbc 9,7-1 in recreational boat. Idled too rich and just didnt run right. They didi all kinds of stuff and it really made a big difference. Cost me $430, but was worth it.
badbug3 is offline  
Old 07-03-2007, 04:26 PM
  #5  
dragharley1
Junior Member
SHOW GUEST
Thread Starter
 
Join Date: Dec 2004
Posts: 8
Default

put 86 jets in all i had was 5.5 power valves ,put those in adjusted screws they are 1.5 turns out ..car runs much better might have too drop jets down a few sizes ,but still too rich at idle but much better than it was ...should i get some air bleeds for the idle?

thanks so far for your help

jim
dragharley1 is offline  
Old 07-03-2007, 04:59 PM
  #6  
Racefab57
Senior Member
DYNO OPERATOR
 
Join Date: Nov 2006
Location: NC
Posts: 557
Default

ITS AIR BLEED TIME FOR SURE.
Racefab57 is offline  
Old 07-03-2007, 05:29 PM
  #7  
oobob
Member
MASTER JOURNEYMAN
 
Join Date: Dec 2005
Location: Building shelves for wally's
Posts: 36
Default

1 other thing to check is, close the throttle blades on primary and secondary then gradually open them equal amounts to get the desired idle RPM.


Mark
oobob is offline  

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


Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service