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Joined: Jul 2012
Posts: 6
Grease Monkey
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Grease Monkey
Joined: Jul 2012
Posts: 6 |
Hey everyone I have a 1941 chevy sedan with a 216 and a 4.11 rear end. Lately I've been looking to get it to go faster so I can drive on the highway but it hasn't been working. I was wondering if it would be easier to get a different rear end or if there if somewhere I can get different gears for mine?
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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 |
How much faster do you want it to go? A '41 with a good engine will cruise at 60 MPH. Installing a 3.73 gear set will give you a 10% speed increase compared to engine speed.
Then you could go 66 MPH.
With your 4.11 60 MPH is about 3100 RPM and with the 3.73 66 MPH would be 3100 RPM.....or 3.55 gears from a Power Glide would give you another 3 1/2 % engine speed reduction....3100 RPM about 69 MPH.
If you get the torque tube and differential center secton from a 1953 0r 1954 stick you will have a 3.70. From a 1950-1954 PG a 3.55.
Gene Schneider
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Joined: Jul 2012
Posts: 6
Grease Monkey
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OP
Grease Monkey
Joined: Jul 2012
Posts: 6 |
Thanks for the information. Would the torque tube and differential from those years fit with my rear end?
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Joined: Jul 2005
Posts: 3,192 Likes: 8
ChatMaster - 3,000
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ChatMaster - 3,000
Joined: Jul 2005
Posts: 3,192 Likes: 8 |
The Filling Station is selling 3.55 rear differential gear sets at the moment. Depending on your budget, suitable for 1940 year onwards.
Part number FS-789
JACK
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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 |
All - note models mentioned.
You keep yor banjo housing (wheel to wheel) and used the center section and torque tube from the models mentioned.
Last edited by Chev Nut; 07/13/14 08:53 AM.
Gene Schneider
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Joined: Jul 2002
Posts: 348
Backyard Mechanic
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Backyard Mechanic
Joined: Jul 2002
Posts: 348 |
I bought a complete used rear end from a 1954 Chevy with a 3:55 ring gear and pinion. With the expert help from Gene Schneider (Chev Nut) I installed the total inside gears in my '41. Made a lot of difference in performance. Gene can walk you through this project. JIM
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Joined: Oct 2007
Posts: 2,306
ChatMaster - 2,000
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ChatMaster - 2,000
Joined: Oct 2007
Posts: 2,306 |
Hi Gene,
How can you tell one year's gear ratio from another's? What would be the ratio for a 47-54 Chevy/GMC pickup truck axle?
Thanks, Mike
Mike 41 Chevy
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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 |
Without removing the cover the code number stamped on the housing will give you the info. See front of shop manual for locaton. Give me what you find and I can decode it for you.
Ratio for PU truck rear axle....if a 1/2 ton truck it would be 4.11 up through 1953 and 3.9 after that.
Gene Schneider
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