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#1 |
Registered User
Join Date: Aug 2011
Location: Ottawa, Ontario
Posts: 140
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Question on towing and load capacity
Currently in the process of building my '72 GMC 1/2 ton 2WD, LB-FS
Has a brand new 350 crate engine (330 HP) and TH400 with a 3.08 rear end upgraded to an Eaton posi. Put new HD variable coils in the back. Trying to find info on capacities for these old trucks and specifically for towing and there ain't much out there. I realize that the 3.08 won't really cut it for towing and I can correct that easy enough, the powertrain has more than enough balls but here's the question .... How do the 67-72 pickups compare to today's pickups in terms of towing capacity? Same, better, worse? Looking to get a travel trailer next year rated for 1/2 ton compatible but would still like to keep it at the low end, say under 5,000 lbs and under 700 lbs hitch weight. Will probably end up buying a new GMC 1500 SLT 4x4 with a towing package at the same time but just curious whether the '72 would hold up or not despite passing everything on the road except a gas station! Feedback is appreciated! Tks Sean |
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#2 |
member #16
![]() Join Date: Dec 1999
Location: Yuba City Ca.
Posts: 3,618
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Re: Question on towing and load capacity
Here's a 69 towing chart, which should be the same for 72.
__________________
john http://67-72chevytrucks.com/vboard/showgroups.php board vendors ![]() http://www.flickr.com/photos/1745471...7602865984234/ |
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#3 |
Registered User
Join Date: Aug 2011
Location: Ottawa, Ontario
Posts: 140
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Re: Question on towing and load capacity
That's excellent info and thank you!
As I suspected, capacity takes a huge jump when you change the rear end ratio and the 3.07 just wouldn't cut it. Sean |
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#4 |
the boat guy
Join Date: Jul 2007
Location: springfield mo
Posts: 2,339
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Re: Question on towing and load capacity
Who knows? Lol
__________________
67, swb, fleet, tach, throttle, 5.3, 4l60e, 3.73's, fuel cell, 5 lug, p.d.b., 4-6 drop. great little truck 66, stevens drag/ski 18' silouette, 350, 2.02 doublehump heads. comp extreme marine 278 cam, vette 7 fin valve covers, old polished edelbrock intake, velvetdrive, casale v-drive, adj cavitation plate. 28, model a rpu project, |
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