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03-25-2021, 10:04 PM | #1 |
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Join Date: Mar 2013
Location: Bend Or.
Posts: 1,057
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Mitchell OD with touring engine
Today I was coming home in my CCPU, still fairly new to me about 300 miles since I finished it. It has a stock motor with the exception of a 5.5 Head.
I have a 26% Mitchell which I love and use constantly as a gear splitter, this too is my first OD. I am wondering if a 36% might suit me better for a touring car I am contemplating. I am planning a touring motor, 6.1 head , Touring Cam, Counterbalanced crank, lightened flywheel, bigger valves, etc. Although I think the 26% will give me plenty of top speed, I am wondering if the 36% would split the second to third gap closer to center, making it a better mid range, and hill climbing car. Anyone have the touring engine, 36% combination with 3.78 gears that would care to comment?
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Bill Worden 1929 Roadster 1929 Briggs Town Sedan 1930 Closed Cab pickup Smith Motor Compressor 1951 Ford F1 High Desert Model A's |
03-26-2021, 06:25 PM | #2 |
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Location: South East Wisconsin
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Re: Mitchell OD with touring engine
I have run a Borg Warner OD for years with a stock engine. The Borg OD is a 33% increase. It pulled a bit hard, IMO. The engine was never quite up to the task. Then I installed a 26% Mitchell and all was well. and the engine now handles it well, 50 MPH is no longer a challenge. A 36% OD, to me is pushing any engine with only 3 main bearings. If your present 26% OD is working well, then maybe you you stay with that? Just my opinion.
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03-26-2021, 06:37 PM | #3 |
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Re: Mitchell OD with touring engine
Changed my car by running 30.5" tires and wheels on the rear..how about a 3.54 with the 26%?..changing overdrive ratio is just one way to change the outcome..
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03-26-2021, 06:44 PM | #4 |
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Join Date: May 2010
Location: Moncks Corner, SC
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Re: Mitchell OD with touring engine
The only way I would run a 36% is with 4.11 gears.
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03-26-2021, 06:51 PM | #5 |
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Location: Bend Or.
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Re: Mitchell OD with touring engine
I am also trying to get the 2nd over split a little higher, changing the gears doesn't do that.
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Bill Worden 1929 Roadster 1929 Briggs Town Sedan 1930 Closed Cab pickup Smith Motor Compressor 1951 Ford F1 High Desert Model A's |
03-26-2021, 06:52 PM | #6 | |
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Re: Mitchell OD with touring engine
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Quote:
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Bill Worden 1929 Roadster 1929 Briggs Town Sedan 1930 Closed Cab pickup Smith Motor Compressor 1951 Ford F1 High Desert Model A's |
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03-26-2021, 06:55 PM | #7 |
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Re: Mitchell OD with touring engine
I would go for the Mitchell 26% O/D with the Mitchell 15% 1st and 2nd synchro trans. I love spending other peoples money...
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03-26-2021, 08:51 PM | #8 |
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Join Date: Mar 2013
Location: Bend Or.
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Re: Mitchell OD with touring engine
That would actually be the best solution, but alas, is not in the budget. I have the synchro trans in another car, which I went with the standard first, 15% increased second. I really like that combo. Then add the 26% should nail it. So I guess I will stick with the 26% and maybe some day, I could add the tranny.
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Bill Worden 1929 Roadster 1929 Briggs Town Sedan 1930 Closed Cab pickup Smith Motor Compressor 1951 Ford F1 High Desert Model A's |
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