355 tbi-not running right-go to carb set up?

Old 05-18-2008, 05:43 PM
  #1  
toddsrodds
Junior Member
SHOW GUEST
Thread Starter
 
Join Date: May 2008
Posts: 1
Default 355 tbi-not running right-go to carb set up?

I have a chevy 355 tbi,420-442 cam,holley 670 tbi,hot chip,400 turbo tranny,373 posi.Runs great up to 3000 rpm,then it starts breaking up.Everything is new,dist,wires,fuel pump,tbi,plugs,engine.Anybody got a suggestion other than a dyno?
toddsrodds is offline  
Old 05-28-2008, 06:07 PM
  #2  
kiesel
Junior Member
SHOW GUEST
 
Join Date: Mar 2005
Posts: 4
Default

have you checked valve spring pressure. many people will overlook that and think there is a ignition problem. I have a 421 sbc with a tbi unit on it and it runs great. dynoed to the ground 311 hp and 362 trq. Dont give up it will be worth it in the end. you may want to call tom at throttle body specialties or at turbo city.


steve
kiesel is offline  
Old 05-29-2008, 01:08 AM
  #3  
edvancedengines
Senior Member
DYNO OPERATOR
 
Join Date: Feb 2006
Location: VA Hospital, Dallas, Tx (214 302 1924) cell-972-464-7400
Posts: 540
Default

You will regret giving up the EFI. Check fuel presure, fuel filter, all named above and by then your problem should be found.

Ed
edvancedengines 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 - Do Not Sell My Personal Information -