WHEN (not if) i swap a 350 in place of my 305 Xfire, i will go 4bbl carb. I realize i need the mallory 3port FPR. I need to know if i allready have a return line i can hook it up to, or if i need one. If it is there, is it difficult to hook up, and if its not there, is it difficult to put in? I also realize that i will need to have different fuel lines put in to the carb. Can i use soft lines, or must i use steel tubing? Is steel tubing difficult to fabricate, or can i find it allready made (ie bolt in)? Thank you for your help.
Matt

 

I resisted replying to this because I'm no crossfire expert.

But, since nobody else has...

EFI always has a return line. Fabricating a simple steel line from reg to existing return line should be easy enough.

 

I really do think five7kid is my hero. Every question i've asked on this board he has answered, nicely even. Im pretty sure youre right, because crossfire is simply two tbi throttle bodies on a really crappy and restrictive intake manifold. How would i go about checking for a return line? Thanks
Matt