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71 roadrunner gas tank sending unit

Posted: Sun Nov 26, 2017 1:43 pm
by EV2 340
can someone tell me what size sending unit i need in my 71 340 roadrunner, is it 3/8 or 5/16, did small blocks take 5/16 inlet and big blocks take 3/8 or did it go by year, any help would be geat

Re: 71 roadrunner gas tank sending unit

Posted: Sun Nov 26, 2017 2:41 pm
by 71bird
What size are the lines going to the front of the car? I think only the Hemi, and 6 pack got 3/8, but I can't swear to that.

Re: 71 roadrunner gas tank sending unit

Posted: Wed Nov 29, 2017 12:16 pm
by 1972RM23
71bird wrote:What size are the lines going to the front of the car? I think only the Hemi, and 6 pack got 3/8, but I can't swear to that.

That's correct (maybe 440 4v too), but all others got 5/16"

Re: 71 roadrunner gas tank sending unit

Posted: Wed Dec 20, 2017 11:17 am
by 71440 gtx
the 440 4bbl 440 6bbl hemi got 3/8 and 1/4 return line

340 360 383 400 got 5/16 line :beer: