southbound dee Posted July 12, 2014 Report Posted July 12, 2014 I just got my first dodge its a 1950 wayfarer business coupe and it has a 230ci with 3 on the tree. My problem is at 50mph its at 3000rpm I would love to just change the rear end just not sure what would work as a direct bolt in. All Im tring to do is go at least 60mph with the rpms @ 2000 or less. Quote
Conroe Powdercoating Posted July 12, 2014 Report Posted July 12, 2014 (edited) do a search, you will find tons of info on the explorer rear and dakota and cherokee etc etc etc. 3.5 - 3.73 ratio seems to be the recommended happy range Edited July 12, 2014 by Conroe Powdercoating Quote
southbound dee Posted July 12, 2014 Author Report Posted July 12, 2014 i have searched the web and cant find much on my issue thats why im here, would those rear ends bolt to my drive shaft? you have to for give me im know nothing about dodges only they are hard to find info on. Quote
southbound dee Posted July 12, 2014 Author Report Posted July 12, 2014 the tire size is 205 75 14 Quote
Don Coatney Posted July 12, 2014 Report Posted July 12, 2014 the tire size is 205 75 14 At 3000 RPM's if you have a 4.11/1 differential with your current tire size you are running 57 MPH. At 3000 RPM's if you have a 3.90/1 differential with your current tire size you are running 60 MPH Follow this link, scroll down to the speed calculator, plug in different numbers and do the math. Quote
Conroe Powdercoating Posted July 12, 2014 Report Posted July 12, 2014 (edited) i have searched the web and cant find much on my issue thats why im here, would those rear ends bolt to my drive shaft? you have to for give me im know nothing about dodges only they are hard to find info on. I have to say there is no bolt in rear end option unless its another old one found in the ratio you want. I also have to say there is a ton of info on rear end swaps on this forum alone much less "the web" you are in the right spot. There is a lot to read about and to much to sit and type, seriously, type in "explorer rear" or "rear swap" or "highway gears" in the search box and dedicate some reading time and then you will learn what you want. On the modern rears I mentioned earlier, you get the benefits of upgraded modern brakes either disc or drum but you have to relocate the spring perches and have some driveshaft work. Edited July 12, 2014 by Conroe Powdercoating Quote
Plymouthy Adams Posted July 12, 2014 Report Posted July 12, 2014 (edited) forum needs more information on what you have now before they can tell you where to go Edited July 12, 2014 by Plymouthy Adams Quote
plyroadking Posted July 12, 2014 Report Posted July 12, 2014 An R10 overdrive transmission would be a direct bolt in option. Just mount a kickdown switch, cable, and relay. Plus your speedometer would still be accurate as none of your ratios change. Quote
Conroe Powdercoating Posted July 12, 2014 Report Posted July 12, 2014 ^^^ and priced like "unobtanium" Quote
Plymouthy Adams Posted July 12, 2014 Report Posted July 12, 2014 ^^^ and priced like "unobtanium" the ole adage.."pay to play" haunts this forum like no other demon...I go this week to inspect a hood for my Jensen Interceptor....compared pricewise...it's Beluga caviar compared to old Plymouth hood available/price being common as grits....lol welcome to the old car hobby....! sold a b-body 2 door bench seat this morning..glad it is gone..put the proceeds toward the hood.... 1 Quote
Young Ed Posted July 12, 2014 Report Posted July 12, 2014 ^^^ and priced like "unobtanium" Just gotta watch. I've got 3 and paid 0 150 and 250 for them. As far as the original poster he'd do well to go back to some 15s 1 Quote
southbound dee Posted July 12, 2014 Author Report Posted July 12, 2014 Guess I will try bigger tires if I dont like the results ill trade it for a chevy... Quote
Plymouthy Adams Posted July 12, 2014 Report Posted July 12, 2014 save your money and get the chevy first...then get tires for it...lol 1 Quote
pflaming Posted July 12, 2014 Report Posted July 12, 2014 R10's are only expensive if you do not shop around. I,ve bought three, the most I've paid is 350.00 Quote
Don Coatney Posted July 12, 2014 Report Posted July 12, 2014 I agree with Plymouthy. If you think a shiverlay will fix everything then by all means go for it. 2 Quote
Dodgeb4ya Posted July 12, 2014 Report Posted July 12, 2014 The stock rear end should be a 3.73. You have non stock wrong 14" rims. Should be 15" rims with 6.70X15" tall tires. Not saying to go OE Bias on tires but definately a tall/ large factory diameter tire. People put the wrong tires and wheels on these old cars and don't realize what the change in engine RPM's will be. Death to the engine and fright to the driver Quote
southbound dee Posted July 12, 2014 Author Report Posted July 12, 2014 I feel the wrong tires has to be the problem,car definitely has to go faster than 45mph... Quote
dlrides Posted July 12, 2014 Report Posted July 12, 2014 Change wheels and tired first ! 15" wheels with a 28" diameter tire should be close to the result you want. 2 Quote
greg g Posted July 13, 2014 Report Posted July 13, 2014 I run 225- 75 15,s on mine , 65 mph indicated is 3280 rpm with 4.11 rear gears. There is something mechanically wrong if you can not in reality go faster than 45. 1 Quote
pflaming Posted July 13, 2014 Report Posted July 13, 2014 Greg is dead on. Check your foot pedal linkage. Quote
southbound dee Posted July 13, 2014 Author Report Posted July 13, 2014 It will go faster just dont feel good about running over 3000rpms Quote
Conroe Powdercoating Posted July 13, 2014 Report Posted July 13, 2014 (edited) these motors were tested at 3600 rpm's for days on end. the straight fan on the motor makes it sound worse than it is. buzz that critter up thar' and if its in good shape she will perform well for you no worries. Mine is a 51 218 w/ 3 speed and 4.11 rear, 70 series 15's and I cruise it at 70 mph no worries, not long stretches but its not like you have to stare at the speedo for for fear of going to fast. Mine cruises 60-65 effortlessly. Edited July 13, 2014 by Conroe Powdercoating 1 Quote
st63 Posted July 13, 2014 Report Posted July 13, 2014 (edited) Definitely go for the larger tires and wheels first...ultimately, an R-10 overdrive is the way to go if you still want more top end, though if you're content with 60-65 you really don't need it. They can be expensive, but in the long run, it's the cheapest option, as it's just a bolt in....if you start monkeying around with newer rear axles, pretty soon you have to change brakes, suspension, drive shaft, make any number of modifications and on and on....and that adds up! Another option is to find a set of original spec 3:73 rear end gears, as they were an option, but you're giving up low end acceleration. In the end, keep looking for an R-10....they're out there. There was a complete unit on craigslist a couple of weeks ago for 300 bucks, offered by a guy who was swapping out his drivetrain. And conroepowdercoating is exactly right...the higher rpm sounds worse than it's...these flat head sixes will cruise effortlessly at 65 at about 3200 rpm..with plenty of room left for rapid acceleration. Mine is a bone stock 41 coupe with the 201, 3 speed with 4.11 rear end, 6x16 inch Coker radials,(talk about priced like unobtanium!) and will do 65 all day long...it's just a matter of getting used to the sound of the higher rpm than we're accustomed to with modern cars. Edited July 13, 2014 by st63 1 Quote
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