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07-13-2005, 09:34 AM
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#1 |
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Account Suspended
Join Date: Jun 2005
Location: Maine
Posts: 427
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Any difference between 1/2 and 3/4 ton frames?
Are there any differences between the 1/2 and 3/4 frames, like strength wise, and will 3/4 ton axles bolt up to a half ton frame? If I can put 3/4 axles under it, will i be as strong as a 3/4 ton? The reason I'm asking is because..........................................................................................
I MAY HAVE GOTTEN LEEDS ON A COMPLETE 69-70 1/2 TON 4x4 TRUCK WITH A GOOD FRAME AND CAB FOR FREE!!!!!!  The guy used it to plow his driveway and he gave it away to another guy. BUT, the guy he gave it to shot himself, so now this little old lady has it on her property, and she might give it back away since it was given to her, and to get it out of her sight. It has a 292 in it with a four speed, complete 7' plow and plow rigging (the guy said i could have the plow, because it is at his house). But i was just curious if the frames were different because i wanted to put 3/4 axles under it if the truck was any good. Or it may just be a freebee parts machine. who knows. but a free chevy pick-up sounds good to me, running or not! |
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07-13-2005, 09:55 AM
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#2 |
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Registered User
 
Join Date: Feb 2001
Location: East Central, MO
Posts: 11,339
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I believe the frames are basically the same. You will have to move the spring pads on the rears unless its a 73-up axle.
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07-13-2005, 10:47 AM
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#3 | |
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Bloo
Join Date: Feb 2001
Location: Barren County Kentucky
Posts: 6,285
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the 1/2 ton frames are visably thinner when you cut a section out of both and put them up together. i put 1/2 ton frame horns on my k20 and before it was welded up you could tell they were smaller, the vise grips wasnt holding the frame horns at all because it would kit my 3/4 ton frame first. that said, you should be able to put 3/4 ton axles under it and do most anything you would want to. the springs are of course stiffer on 3/4 ton too
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ASE Master Certified-GM Trained-Mechanic 1968 Chevy C30 157" WB Wrecker 1969 Chevy CST/10 SWB 1971 Chevy Custom/10 (first truck) 350, NV3500 5 speed 1971 Chevy K20 Custom Camper 4x4 350 TBI, SM465/NP205 1974 Chevy Custom Deluxe/10 1979 Chevy Custom Deluxe K10 farm truck beater 1989 Chevy K2500 Quote:
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07-13-2005, 11:36 AM
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#4 |
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user # 2756
Join Date: Jun 2001
Location: Chesapeake, Virginia
Posts: 4,612
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if your 3/4 ton axles are from a 67-72 they'll bolt up.
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1970 K25, 8' stepside bed 350/465/205 44 up front, 60 in the rear 4.10s rolling on 33" Dunlop MTs 1986 K5, 350/465/208 Dana 60/14 bolt from a cucv 36" Super Swampers TSL/SX 1983 K20 w/ CUCV axles, 350/700R4/208 sitting on 37" Goodyears 1986 M1031 6.2 diesel, TH400/NP205 locker in the rear and a LS in the front, all stock for now..... 1986 K30, 350/400/205 dana 60 and 14 bolt. I kept the drivetrain. Body/bad and chassis are gone. 1981 K30, 350/465/205 dana 60 and dually 14 bolt. Has a G80, and a flat bed. Going to replace the flat bed. 1985 K20, 350/400/208 10 bolt and SF 14 bolt. I wonder where I can find some 1 tons. Hmmmmm 
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07-13-2005, 01:57 PM
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#5 |
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Java Mechanic
Join Date: Jun 2005
Location: Martinsburg, WV
Posts: 6,764
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The opperative word here is FREE....
Go get the dang thing and worry about the details later.. ROTFLOL!
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Keith 11 Lincoln MKT -- Momma's wagon  13 G37xS -- middle age crazy car 68 C20 Fleetside -- RIP Decorating the whole town up at a cost of $27 .... |
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07-13-2005, 02:05 PM
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#6 | |
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Account Suspended
Join Date: Jun 2005
Location: Maine
Posts: 427
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Quote:
well said. |
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07-13-2005, 05:21 PM
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#7 |
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Chevys Kick A$$
Join Date: Jan 2005
Location: Zootown, MT
Posts: 12,699
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^Yeah, what they said. Go get it and see what the dealyo with it is first.
-Later
__________________
*HOODS is what I answer too* -'79, '77, '88 Pickup Sold, '85 Camaro, '83 T/A, '81,'83,'90 K5 Blazer All Sold  -'79 3/4 ton "Big Yellow Bananna" Lifted 4spd. 39.5 TSL Swampers, The money Pit  -'86 K5 Blazer Silverado 6.2 4" lift 35"s -'95 Ext. Cab Shorty 4" Tuff Country rolling 35" M/T's -'83 Monte Carlo T-Tops. 126,500 Original Miles -LATER  I would rather push a Chevy then drive a ford!!
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07-13-2005, 10:32 PM
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#8 | |
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Uncle H. is this cartoon
Join Date: Nov 2004
Location: Mississauga, SC (I wish! lol!) Ontario
Posts: 797
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Quote:
I looked at an old C1500 (88-98) GMC at my college that was parked for years with its bed removed. I took a machinists ruler and measured the frame thickness between 0.110" and 0.135". Last edited by uncle_handsome; 07-13-2005 at 10:32 PM. |
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07-13-2005, 10:57 PM
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#9 |
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Bloo
Join Date: Feb 2001
Location: Barren County Kentucky
Posts: 6,285
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i dont really know uncle, that is a good question though.. if i had a way to measure i could check on my 89 k2500
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07-14-2005, 05:37 PM
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#10 |
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Uncle H. is this cartoon
Join Date: Nov 2004
Location: Mississauga, SC (I wish! lol!) Ontario
Posts: 797
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I've heard specs for the new Super Duty F*rds.
Their older chassis used to be 0.255" thick on the models starting in the late 90's. The 2004 model has a chassis 0.285"! (about double the thickness on the 88-98 GM ton) BTW anything as thick or thicker than 0.250" is considered "plate metal" not sheet metal.  If you're interested you could probably check the frame thickness just by looking under the truck with a flashlight and machinist's ruler (something that measures 1/100's of an inch) a micrometer or vernier calipers; as long as the chassis is still an "open-C channel" shape in the back. That's what I saw on the 1/2 ton GMC, open C channel. |
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