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  1. Stock Chevy Discussion 55-56-57
    I have an original equipped 1956 Chevy. Driving down the 4 lane highway at 70 mph really revs the engine up and feels like I need another gear. I’m considering changing out my stock 3 speed transmission for a 3 speed with overdrive. The rear end is the original 3.70. The engine is the...
  2. Transmission and DriveLine Questions
    Hey everybody! The 3:73 or whatever is the original 6 cyl gears in my 1956 150 are too low. With a Turbo 350, the engine RPM is way too high (4000-4500?) at 60 MPH. I have been told the 55-56 rear ends are not durable, and will fail eventually even when just used in a "cruiser". Should I... 1)...
  3. Transmission and DriveLine Questions
    Relating to a original 56 wagon, 235 three speed. seems when a GM Nova 8.5 10 bolt is installed the driveshaft needs to be shortened 1.5"? I was gonna relocate the rear end 3/4 back but can't because of the gas tank so it's gotta go in the stock location. Is there anything I'm not thinking about?
  4. Transmission and DriveLine Questions
    Trying to determine what rear end is in my 56 Bel Air. Originally it was a 3 on the tree 6 cyl, subsequent owner changed to 350 crate engine with 700R4 transmission. Don't know if the rear end was changed. See attached photo. These are the only markings on the rear end. Can't find anything...
  5. Transmission and DriveLine Questions
    So I finally got my 56 running well enough to try some power braking to try and smoke the tires. What I discovered was my car is Putting down TWO two marks on the street, and from all the great info on has lead me to believe it is a stock 1956 Chevy rear end with 3:73 gears. I'm...
  6. Transmission and DriveLine Questions
    Finally done with my 56. Runs and drives great, except.. When I get up to 60 MPH, the small block is revved up more than I like. What is better - go from the 3:73 gears to say 3:08, or change the Turbo 350 to a 400, or? Any input is appreciated.
  7. Transmission and DriveLine Questions
    I'm going to have my rear axle rebuilt and install new 373 gears and Timken bearings. Id like to ask experienced folks who have the same exact rear that I do (Stock 1957 Bel Air rear end) what the best practice is. And are the copper washers on the bolts necessary?
  8. Transmission and DriveLine Questions
    I have a 57 Chev Belair. I am trying to change the stock 57 rear end to a 1970 firebird rear end. But the u joints are different sizes. How can I make this work?
  9. Transmission and DriveLine Questions
    I have a factory style 283 powerpack engine with the high compression heads and four barrel carburetor. I had the engine rebuilt and roller cammed (for the fun of it) recently, and I have the cast iron powerglide behind it. I have a factory rear end too. I recently heard of a kits, specifically...
  10. Transmission and DriveLine Questions
    Dear members, Can anyone tell me the correct gear oil that my 1957 Chevy rear axle case requires? Is 75-90W the correct weight?
  11. Stock Chevy Discussion 55-56-57
    Im having my 283 rebuilt and while its in the shop im considering having the stock gear ratio changed. It has a 3.36 but i would like to go much lower if i could. How low of a ratio could i get? I refuse to change out the powerglide, and it sees a good amount of highway use so those RPMS are...
  12. Transmission and DriveLine Questions
    I would like to change the rear end and transmission on my 57 Bel air Hardtop. I want to put in a 5 speed transmission and want to change the rear end from a non-posi to a posi 373. Can anyone suggest what rear end from what year and make of gm car will be a good fit without a lot of...
  13. New Member Introductions
    Hello from Texas! Thanks for the page, looks like a lot of good information flow. Now...for my post: I have a '56 210 Townsman, 283, Muncie 4 spd and an unknown rear end. Thanks y'all.:gba:
  14. Suspension Questions Chassis, Brakes, Shocks, Etc
    I replaced differential today. I have done this before. however when i turn axle by hand and watch the drive shaft the drive shaft stops turning and it gets easier to turn axle. it does this once every rotation of axle. is this limited slip or is something messed up ? please help:p3:
  15. Classifieds Section - For Sale Items ONLY!
    Hello, I'm trying to locate a 3rd member pinion yoke with oil shield for a 55 stock rear end and driveshaft. There is a chunk out of the casting on mine where the u-joint cup would seat. Thanks, Ryan
  16. Transmission and DriveLine Questions
    I just purchased a 3.55 ratio 3rd member which has gaulded spider gears. Obviously these will need replaced. I've never went through a 3rd member before, so I'm curious if you could swap a set of spider gears out of another 3rd member which is not the same ratio or not. I think you can, but I'm...
  17. Transmission and DriveLine Questions
    I really need some no-nonsense advice. Background: '57 210 2-dr sedan w/ 383 stroker and auto TH350. Goal is street car/cruiser with some balls. Front end has refurbed LCAs and UCAs, CPP lowered 1.5 springs, ridetech shocks, and heidt's 2" dropspindles, and sway bar. 4-wheel Wilwood 12"...
  18. Transmission and DriveLine Questions
    This is my first thread, so bear with me! Love the site by the way. Anyway, I have a 57 GMC with a 3+3 (or so i was told) dually rear diff (8 lug) I am wondering how to actually identify this rear end, like how many springs it should have. It has two sets. What the gear ratios are, and if the...
  19. Paint & Bodywork Questions and Answers
    I've been planning on repainting my car for some time now, but the problem is that I have some bodywork that needs to be done beforehand. My poor baby (while with the previous owner) got tagged high in the rear quarter panel. The majority of the quarter panel has no damage at all, but the top...
  20. Classifieds Section - For Sale Items ONLY!
    This 1955-1964 Chevy rear end center section is an original two-pinion type with cast arma-steel housing. The differential fits all passenger cars. We have inspected the ring and pinion so as to ensure minimal ware and tare on the differentials that we sell. Occasionally we pull in a...
1-20 of 28 Results