| |
Click on image for the lowdown. 
====
| | | Forums66 Topics128,088 Posts1,056,414 Members48,443 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
| | THANKS!
For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Jul 2010 Posts: 4 New Guy | | New Guy Joined: Jul 2010 Posts: 4 | ok guys thanks for all the input on the starting problem gonna convert it to 12 volt anyway what is the difference between a h052 and a h072 i am currently running a457 ratio in my truck and just found a 410 but its from a 1969 1 ton drw truck i wanna just swap out the pumpkin leaving the housing alone will this work ??? thanks | | | | | Joined: Mar 2004 Posts: 874 'Bolter | | 'Bolter Joined: Mar 2004 Posts: 874 | i wanna just swap out the pumpkin leaving the housing alone will this work ??? thanks Yes | | | | | Joined: Apr 2009 Posts: 164 Shop Shark | | Shop Shark Joined: Apr 2009 Posts: 164 | yes they swap out, I know 67-72 3/4 ton automatics had 4.10s so if its out of a 1 ton double check the ratio. | | | | | Joined: Oct 2007 Posts: 388 Shop Shark | | Shop Shark Joined: Oct 2007 Posts: 388 | Does 4.10 to 4.57 make such a big difference, I am in the same boat and will be interested to know the driving experience and mileage on that.
Ganesh | | | | | Joined: Feb 2003 Posts: 452 Shop Shark | | Shop Shark Joined: Feb 2003 Posts: 452 | Hevyft
You lucky so-and-so. Where did you find it? I've been hunting for a while for my 49 with no luck. Not looking in the right places, I guess.
If it is from a 1-ton and isn't a 4.10 ratio, you may want to hang onto it anyway. Randy's Ring and Pinion (sometimes) has gearsets for 4.10, but they only fit in later carriers. And they COST... Plus the install kit.
Good luck, I hope it's the 4.10.
Current fleet (subject to change w/o notice) \'49 GMC 3/4-Ton , 60 Austin Healey Frog-eye Sprite (some assembly required), 2011 Dodge Avenger, 2015 Jeep Cherokee. No, they don't all run. My other ride is a (B737)no, (B767)no, A320.... Update... was Embraer E190, now Boeing B787. Knowledge is a wonderful thing, but ignorance means you don't know you can't do something.
| | | | | Joined: Oct 2003 Posts: 5,152 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Oct 2003 Posts: 5,152 | what is the difference between a h052 and a h072 The size of the brakes and the gear ratio. The 4.10 is hard to find and will swap right into either housing so if it really is 4.10 you've a great find! Can you post exact details of the donor truck? 1969. Chev or GMC? Auto or manual? What motor? These details may help others looking for this diff.
1955 1st GMC Suburban | 1954 GMC 250 trailer puller project | 1954 GMC 250 Hydra-Matic | 1954 Chevy 3100 . 1947 Chevy COE | and more...
It's true. I really don't do anything but browse the Internet looking for trouble... | | | | | Joined: Jul 2010 Posts: 4 New Guy | | New Guy Joined: Jul 2010 Posts: 4 | 1969 c30 with a350 v8 and 400 trans | | | | | Joined: Nov 2000 Posts: 1,969 'Bolter | | 'Bolter Joined: Nov 2000 Posts: 1,969 | smokey_truck
It's right at 90% overdrive or a 10% reduction in RPM at any given speed. So if you have to turn 3000 rpm to go 60 mph with the 4.57 you'll only have to turn 2700 with the 4.10. (somebody check my math) Does it make such a difference is a valid question.
Professional Novice
| | |
|
|
| |
