old timers
Post Fiend
Joined: Jan 2000
Posts: 5,330
Likes: 17
From: Dryden, ON, Canada
The coil sprung F150 TTB will bolt right into a 2wd F250. You can get 8 lug hubs on it with Chevy parts, but, I don't think you can put the dual piston F250 calipers back on there.
The F250 TTB is the 44HD(70's F250 axles received the same monkier) axle that shares beam lengths with the D50. The F150 stubs will work in it, but the inners don't fit due to the pumpkin being about 2" closer to the center of the truck than the F150. The long side will work due to the slip yoke on the pass side, but, the drivers side won't reach the side gears.
I unfortunately know these things inside out and backwards...
The F250 TTB is the 44HD(70's F250 axles received the same monkier) axle that shares beam lengths with the D50. The F150 stubs will work in it, but the inners don't fit due to the pumpkin being about 2" closer to the center of the truck than the F150. The long side will work due to the slip yoke on the pass side, but, the drivers side won't reach the side gears.
I unfortunately know these things inside out and backwards...
i ain't rite
Joined: Mar 2005
Posts: 65,581
Likes: 5,613
From: Marlboro Mental Hospital.
somehow, i missed this thread till this morning.
but anyhow, i never ran a 471. but i did run 2 453 detroits in 24 foot single axle straight job chevys.
one was a plain old 453 with a 10 speed, and it was a gutless wonder.
the other truck was a 453T with a 10 speed, and ran pretty good once i set the throttle linkage to run full throttle.
but anyhow, i never ran a 471. but i did run 2 453 detroits in 24 foot single axle straight job chevys.
one was a plain old 453 with a 10 speed, and it was a gutless wonder.
the other truck was a 453T with a 10 speed, and ran pretty good once i set the throttle linkage to run full throttle.
Thread Starter
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Post Fiend
Joined: Oct 2007
Posts: 10,501
Likes: 5
From: Faibanks Ak.
Tjc I haven't looked at the motor it is possible it is a 453. Did the 453 have a blower like the 471.
This is in a56 or57 gmc truck single axle with a drilling rig and the motor run the truck the rig and the air compressor.
This is in a56 or57 gmc truck single axle with a drilling rig and the motor run the truck the rig and the air compressor.
Senior User
Joined: Apr 2008
Posts: 448
Likes: 0
From: Iowa
3.07 are bound to be available somewhere they came stock in chevys.
I never could figgure out why but chevys 5.7 diesels all had either 3.07 or 3.08 (can't remember which) the under powered motor never had a chance with those gears.
I never could figgure out why but chevys 5.7 diesels all had either 3.07 or 3.08 (can't remember which) the under powered motor never had a chance with those gears.
The max tow rating on any 5.7 rig is only 2000 pounds. If they caught you with some type of hitch on your truck (besides step bumper) it voided the warranty.
Pickups could be ordered with 2.73, 3.08, or 3.42 gears. Most, if not all, had a posi rear end as well. My '81 C1500 had a 5.7, Th350 and 12 bolt with 3.08s and posi. I never got around to getting it running and sold it...oh well
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Post Fiend
Joined: Oct 2007
Posts: 10,501
Likes: 5
From: Faibanks Ak.
The rig is over a hundred miles from me so I will lppk and see which motor it is the next time I get down there. I'm just thinkin it would make a pretty unique 5th wheel puller with late model running gear and a set of boxes.
This is a project that has no priority though and I will probably never get to it, it is just something that I traded for and christmas day I was down there and seen the body was in exceptionally good shape. Way too good to scrap.
As far as the 5.7 chevys you are probably money ahead by never getting it running I had one for a company truck in 79, no way could I have affordrd to keep that pickup running. A friend of mine bought a new one he fished the bass pro circuit so the same day he bought a matching bass boat. The following day he goes back to the dealer to get the trailer lights and ball installed and they told him if he put a ball on it the warranty would be voided, so he traded a 2 dayold pickup in on one he could pull his bass boat with but wound up without a matching rig and was chapped.
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Lead Driver
Joined: Nov 2003
Posts: 6,900
Likes: 3
From: Campbell River, B.C.
The coil sprung F150 TTB will bolt right into a 2wd F250. You can get 8 lug hubs on it with Chevy parts, but, I don't think you can put the dual piston F250 calipers back on there.
The F250 TTB is the 44HD(70's F250 axles received the same monkier) axle that shares beam lengths with the D50. The F150 stubs will work in it, but the inners don't fit due to the pumpkin being about 2" closer to the center of the truck than the F150. The long side will work due to the slip yoke on the pass side, but, the drivers side won't reach the side gears.
I unfortunately know these things inside out and backwards...
The F250 TTB is the 44HD(70's F250 axles received the same monkier) axle that shares beam lengths with the D50. The F150 stubs will work in it, but the inners don't fit due to the pumpkin being about 2" closer to the center of the truck than the F150. The long side will work due to the slip yoke on the pass side, but, the drivers side won't reach the side gears.
I unfortunately know these things inside out and backwards...
Thanks for the info though.
Post Fiend
Joined: Jan 2000
Posts: 5,330
Likes: 17
From: Dryden, ON, Canada
You can swap a T-Bird caliper onto the F150 TTb that has a larger piston displacement than the dual piston stuff with 5 lug wheels, BUT, every TTB I've seen converted to 8 lug has used Chevy 3/4 ton stub axles, spindles, hubs, rotors, caliper brackets, and calipers, which are half ton calipers.
That pretty much leaves you hooped for keeping the big brakes and the coil spring ride unless you want to get into some serious fabwork, either modifying the 44HD beams to work with radius arms, or marrying the inner knuckle of a 44HD beam with an F150 beam(balljoint spacing is wider on the HD so you can't just swap the knuckle.) Neither one of those ideas is for the faint of heart.
That pretty much leaves you hooped for keeping the big brakes and the coil spring ride unless you want to get into some serious fabwork, either modifying the 44HD beams to work with radius arms, or marrying the inner knuckle of a 44HD beam with an F150 beam(balljoint spacing is wider on the HD so you can't just swap the knuckle.) Neither one of those ideas is for the faint of heart.
Lead Driver
Joined: Nov 2003
Posts: 6,900
Likes: 3
From: Campbell River, B.C.
No, definately not for the faint of heart. Dana44HD it is, then. D44HD solid beam is also something I'm tempted by, but thats not going to be an easy find. I think those have dual piston calipers.....maybe I should swing by the 73-79 forum and ask.
Lead Driver
Joined: Nov 2003
Posts: 6,900
Likes: 3
From: Campbell River, B.C.
You have one?
Are the brakes comparable to the 1980 up F250s?
Thread Starter
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Post Fiend
Joined: Oct 2007
Posts: 10,501
Likes: 5
From: Faibanks Ak.
I'm not sure about the diameter but they are comparable. Even waaaaaaaay back there I had a 72 F250 camper special 2x with dual pistons. F250 4x didn't get disc until 76 and they were dual piston. The 76 I have has had a 6.9 in it since 85 it has the D44 with the big hubs and the only thing I ever had any trouble was with the spiders twice. Both times I broke the spiders was my fault 15x35 tires trying to pull a load that wouldn't move when idling in low range is spun and instead of clutching it I gased it. I knew better it only broke the spiders twice but it chunked the driveline several times doing the same thing.
