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Joined: Mar 2018
Posts: 3
Grease Monkey
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OP
Grease Monkey
Joined: Mar 2018
Posts: 3 |
everyone,
I bought a 1935 Chevy sedan standard.From what i can tell it has a 235 engine out of a 54 Chevy (3835913 GM19. Also there are hydrolic brakes on this car so my belief is they put a 1936 sedan rear end to make this possible (411 gear ratio). As far as i can tell it has the original transmission but i can not find anything from the numbers on it (590788). My goal is to get where i can drive about 70 - 75 miles an hour. Not sure if there is a transmission i can put on to achieve this or if it is better to change the rear end or both.
I do not see where i can attach picture on here but will email them to anyone who might be able to help
Any help would be greatly appreciated
thank you
Brian
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Joined: Jan 2002
Posts: 30,701 Likes: 141
ChatMaster - 25,000
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ChatMaster - 25,000
Joined: Jan 2002
Posts: 30,701 Likes: 141 |
The casting number is not listed in the parts book but from the number series I believe it is from a 1937-1939 passenger car. I would suspect the rear end is from that also. iF IT IS A 1937 OR NEW CAR CAR rear end it will be of the hypoid type. That means the torque tube is not centered in the rear housing but enters at inches lower than the center. That would mean it also could have a 3.73 rear end.Removing the rear end cover getting the numbers off the rign gear will tell the story.
As far as driving 70 MPH at a steady speed.....the roadability of that car if questionable over 60 MPH.
Gene Schneider
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Joined: Aug 2004
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ChatMaster - 3,000
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ChatMaster - 3,000
Joined: Aug 2004
Posts: 3,469 Likes: 48 |
A '35 Standard car came equipped with 5 bolt wheels and 4.25 inch bolt circle. This pattern was exclusive to '33-'36 Standard series cars. The only Chevy rear axle to match this and have juice brakes is from a 1936 Standard. All other Chevy cars and 1/2 ton pickups of the period had 6 bolt wheels.
When I want to drive 70 MPH, I get in my '04 pickup or my minivan. Going slow and enjoying the experience is the best part of old car ownership.
Mike
ml.russell1936@gmail.com
Many miles of happy motoring
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Joined: Jan 2002
Posts: 30,701 Likes: 141
ChatMaster - 25,000
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ChatMaster - 25,000
Joined: Jan 2002
Posts: 30,701 Likes: 141 |
The transmission is a 1937-1939 3 spped , car or 1/2 ton truck. I can't see enough of the differential but my guess it is from a 1937 1/2 ton truck. That leaves me to believe the drive line is from a 1937 1/2 ton truck but not 100% sure.
With the more modern 235 engine a 4.11 rear end would permit 60 MPH.
The limiting factor would be the steering and brakes when in heavy traffic or on rough roads.
Last edited by Chev Nut; 03/12/18 01:05 PM.
Gene Schneider
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Joined: Mar 2018
Posts: 3
Grease Monkey
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OP
Grease Monkey
Joined: Mar 2018
Posts: 3 |
Thank you. would putting a 4 or 5 speed be better? If so is there an easy change out or would putting a rear end with different gears be better. I have heard that Chevy s 10 rear ends fit pretty nicely.
The only reason i ask is because someone that looked at my car said i would be able to get to 40 if i was lucky because i have a 3 speed and 4.11 in the rear.
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Joined: Nov 2002
Posts: 7,472 Likes: 26
ChatMaster - 7,000
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ChatMaster - 7,000
Joined: Nov 2002
Posts: 7,472 Likes: 26 |
I have the three speed with 4.11 gears in my 32 and cruise comfortably at 45 and have done 50-55 on occasions for several miles. As Chevnut posted above 60MPH with the components listed would be attainable and not overworking the components. I suggest you locate a local VCCA chapter and find someone with similar specs to talk to and perhaps take a ride. Whoever told you that you would be lucky to get to 40 is very uninformed. Needless to say condition of the components will make a difference on how they perform.
Steve D
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Joined: Dec 2007
Posts: 4,024 Likes: 99
ChatMaster - 4,000
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ChatMaster - 4,000
Joined: Dec 2007
Posts: 4,024 Likes: 99 |
Thanks for sharing the details. There are some pretty smart people on this forum who can help you.
I will share some thoughts with respect to traveling 70 mph in a 1930's car. While it is technically plausible I have to consider if it is realistic. I agree that you can change the rear axle ratio (which would probably require a complete rear axle swap for many reasons) and install a 5 speed overdrive transmission. That would give you a reasonable engine speed for 70 mph road speed.
Remember that you are driving a complete car, not just the drivetrain. Consider the capabilities and condition of the wheels and tires, steering, suspension, and brakes. These cars were designed and built when the national speed limit on major highways was 45 mph.
I enjoy and feel very comfortable driving my very original '37 Master coupe at 55-60 mph (3.73 rear). There have been some shorts drive at 65+ but I am not near as comfortable. I just do not feel that the brakes, steering, and suspension are really capable of controlling the car at that speed in an emergency situation. Even the body and frame flexing is noticeable at 70. I cannot imagine how it would respond hitting a pothole at that speed!
If your goal is to safely, comfortably, and reliably drive a 1935 car at 70 mph, your probably need to expand your scope of work greatly.
Rusty
VCCA #44680
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