Re: 72 Cummins swap
Is your truck 4x4? If it is and is lifted at all then I'd think you could run a rear mount tank and still have room for 4" exhaust. I installed a 25 gal. square body burb tank in my '71, and after moving those rear crossmembers it fits like a glove...but I had absolutely no room for exhaust back there since mine's 2wd and lowered 5.5" in the rear.
I picked the 25 gal. tank because it only hangs down a few inches below the frame rails, whereas the 31 gal. & 40 gal. tanks hang lower.
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Zach
1970 Chevrolet Custom Camper K20
1971 GMC Super K2500, 12V/NV4500 swap in progress
1971 Chevrolet Custom C10
1972 Chevrolet Custom Deluxe C20, 5.3/4L60E
1972 Oldsmobile Cutlass Supreme, 455/TH400, 3.73 posi
2004 GMC Sierra 2500HD, LB7/Allison, CCSB
2005 GMC Sierra 1500, 5.3/4L60E, CCSB
Last edited by BigRed76; 01-27-2014 at 03:45 PM.
Reason: word choice
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