carb & factory TBI system
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Location: Huntington, WV, USA
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Car: 00 Trans Am
Engine: LS1
Transmission: 4L60E
carb & factory TBI system
I will be converting from TBI to Carb. I am going to run a 1406 Edelbrock carb, and rpm intake with the center holes machined to work on my 87+ heads, with a vacumn advance distributor from jegs.. I read the tech article on this and have a question about the 3 port regulator suggested.. my question is why?? why do i need to get a three port?? I know i have 3 lines coming to the engine bay, one for the vapor canister that i have already removed and plugged the line.. another is your main feed to the TB unit and the third line is a return line running out of your TB to your fuel tank.. So why couldnt I just get rid of the return line and plug it close to the tank and simply install a single inlet/outlet regulator before the carb.. I know i would only need like 3-4psi of pressure at the carb so a regulator of some sort would be required.. but the 3 port is much more expensive than a single in/out style.. can someone explain to me if there would be any down falls to not running the 3 port and simply blocking the return line..
Thanks in advance
Thanks in advance
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junkcltr
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08-02-2019 11:12 PM