Davidmccabe Posted December 12, 2021 Report Share Posted December 12, 2021 I have a1941 plymouthtruck I am looking to speed it up it has 10 gears I would like to buy 355 or 373 it has 11 bolt 10 spline Quote Link to comment Share on other sites More sharing options...
Bryan Posted December 12, 2021 Report Share Posted December 12, 2021 Maybe Ebay or Facebook marketplace. Might want to get a Hollander Interchange book to see what fits. Quote Link to comment Share on other sites More sharing options...
Davidmccabe Posted December 12, 2021 Author Report Share Posted December 12, 2021 When looking for a Hollander book do I look for the year or the model Quote Link to comment Share on other sites More sharing options...
Bryan Posted December 12, 2021 Report Share Posted December 12, 2021 Mine is a range of years 1946-56. It has Fords, Chevys, Dodges, etc. Probably would be the same for yours except maybe pre 40s to 50s. NOT the Foreign manual they have on Ebay. Probably this one but would try to get it cheaper. My car book has truck parts even though it says just cars on cover. HOLLANDER INTERCHANGE PARTS MANUAL BOOK HOLANDER 1920-1948 CATALOGUE FINDER | eBay Quote Link to comment Share on other sites More sharing options...
47 dodge 1.5 ton Posted December 12, 2021 Report Share Posted December 12, 2021 (edited) 10 gears now? (2) speed rear or an overdrive? Guessing this is a two ton or bigger? A local friend of mine just installed a “brownie” 1 over, 1 under, and the direct. We went for a ride to give it a try early in the week and it gained 10mph empty on the flat road. Just more shifting on the hills and a lot more tranny noise. The highest ratio gear would be 5:11 and I would think the motor would need to be warm for any benefit. disregard my reply, I was thinking 5speed truck, not pickup. Edited December 12, 2021 by 47 dodge 1.5 ton Quote Link to comment Share on other sites More sharing options...
Loren Posted December 12, 2021 Report Share Posted December 12, 2021 The quickest easiest way to determine what donor car has the ratio you want is to go to oldmoparts.com and look at the range of mopars that use the same 3rd member gasket. Then google the question “what final drive ratio does a 1956 DeSoto have?” Or something like that. Then go to ebay and search 1956 Desoto rear axle. I found 4 candidates in 5 minutes and all you had to do is ask if the car had an automatic. BTW I was looking for a 3.54 to 1 ratio. Quote Link to comment Share on other sites More sharing options...
Bryan Posted December 12, 2021 Report Share Posted December 12, 2021 Is he wanting a ring & pinion gear set or an entire housing and contents? If the gear set wouldn't it have to match up with the pinion bearings. Like on mine the front and rear pinion bearings are 37-1950 various cars. Gasket is up to 1962 Quote Link to comment Share on other sites More sharing options...
Bryan Posted December 13, 2021 Report Share Posted December 13, 2021 On 12/11/2021 at 11:48 PM, Loren said: The quickest easiest way to determine what donor car has the ratio you want is to go to oldmoparts.com and look at the range of mopars that use the same 3rd member gasket. Then google the question “what final drive ratio does a 1956 DeSoto have?” Or something like that. Then go to ebay and search 1956 Desoto rear axle. I found 4 candidates in 5 minutes and all you had to do is ask if the car had an automatic. BTW I was looking for a 3.54 to 1 ratio. I'm sure not seeing any 3.54 rear ends for my 1948 Dodge D24 fluid drive on Ebay. Mine has a 3.9. Looked thru the range of cars listed by Hollander. I'll probably be into it in a few weeks since it's leaking like a sieve.. Quote Link to comment Share on other sites More sharing options...
James_Douglas Posted December 14, 2021 Report Share Posted December 14, 2021 Did the Plymouth Trucks use the passenger car rear end or the Big Chrysler 8 rear end or the Dodge truck rear end? Does the existing ring gear use 10 bolts to bolt it to the cage or 12 bolts to the cage. (Not to the housing). James Quote Link to comment Share on other sites More sharing options...
Racer-X- Posted December 14, 2021 Report Share Posted December 14, 2021 On 12/11/2021 at 8:08 PM, Davidmccabe said: I have a1941 plymouthtruck I am looking to speed it up it has 10 gears I would like to buy 355 or 373 it has 11 bolt 10 spline Punctuation is your friend. Or maybe more specific words. Symbols and decimal points matter. Are you saying it has a 10" (10 inch) ring gear? And you'd like to install a 3.55:1 or 3.73:1 gear set? Quote Link to comment Share on other sites More sharing options...
wayfarer Posted December 14, 2021 Report Share Posted December 14, 2021 ....words have meaning...... but with the advent of text messaging and the decline in quality of a public education 'we' are left to guess at a lot of communications these days. 1 Quote Link to comment Share on other sites More sharing options...
Sniper Posted December 14, 2021 Report Share Posted December 14, 2021 You know, I really need a new keyboard. My V and X are intermittent, lol. For some reason it want's to spell the as teh as well as adn instead of and then there is the ; and ' swap I seem to do a lot. I blame the keyboard, ? Quote Link to comment Share on other sites More sharing options...
Plymouthy Adams Posted December 14, 2021 Report Share Posted December 14, 2021 1 hour ago, Sniper said: I blame the keyboard, ? bless ya, most blame their parents..... Quote Link to comment Share on other sites More sharing options...
48ply1stcar Posted December 15, 2021 Report Share Posted December 15, 2021 I don't know if your truck axle is anything like a P15 axle but I used a 3:55 2000 Cherokee axle in my 48 Plymouth. There are a lot of axle swaps in this web page. Quote Link to comment Share on other sites More sharing options...
Davidmccabe Posted December 16, 2021 Author Report Share Posted December 16, 2021 On 12/14/2021 at 12:31 PM, Racer-X- said: Punctuation is your friend. Or maybe more specific words. Symbols and decimal points matter. Are you saying it has a 10" (10 inch) ring gear? And you'd like to install a 3.55:1 or 3.73:1 gear set? Quote Link to comment Share on other sites More sharing options...
Davidmccabe Posted December 16, 2021 Author Report Share Posted December 16, 2021 It has 4.10 gears and need whole 3rd member in a 3.54 or 3.73 11 bolt 10 spline 8.25 inch Quote Link to comment Share on other sites More sharing options...
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