355 tbi-not running right-go to carb set up?
#1
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Join Date: May 2008
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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?
#2
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Join Date: Mar 2005
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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
steve