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Old 10-03-2009, 09:10 PM
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1965 c-10 230cid engine, trans swap questions

i have a '65 c-10 230cid with 3-on-the-tree, and a 3.73 rearend. I want to convert it to a 4-speed to lower the rpm's at higher speeds. My question is which tranny to get, as this is my first build. Any help is appreciated. Thanks in advance.

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Old 10-03-2009, 09:29 PM
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A 4 spd is not going to do it for you, 4th gear is still a 1-1 ratio same as 3rd in the 3 spd. What you need is a 5 spd such as a T-5 from an 80's 90's Camaro/Firebird...These are relatively easy to find and an easy swap. Here are some write ups

T-5 Links
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Old 10-04-2009, 02:09 AM
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Quote:
Originally Posted by hogring
i have a '65 c-10 230cid with 3-on-the-tree, and a 3.73 rearend. I want to convert it to a 4-speed to lower the rpm's at higher speeds. My question is which tranny to get, as this is my first build. Any help is appreciated. Thanks in advance.
Try and find a MOPAR produced 3 speed, with 4th being overdrive. Came in Chev/GMC PU trucks. Basically a 4 speed MOPAR refitted to make it a manual overdrive. A basic bolt in. The other way is to find a Muncie or Saginaw 3 speed with an overdrive.
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Old 10-04-2009, 07:12 PM
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Quote:
Originally Posted by junior stocker
Try and find a MOPAR produced 3 speed, with 4th being overdrive. Came in Chev/GMC PU trucks. Basically a 4 speed MOPAR refitted to make it a manual overdrive. A basic bolt in. The other way is to find a Muncie or Saginaw 3 speed with an overdrive.
Keep in mind---the GM and Mopar versions do not interchange.

GM should have a 10 spline input shaft vs the Dodge's 23.
So---you will need the Chev/GMC to bolt right in.


Nice little trans too-----have one in my Dodge D-150 with a 225.
If you live in an area with hills---be prepared to never get to 4th gear.
Teeny weenie 6cyl just does not have the power to pull even the slightest grade in 4th gear-----A headwind will keep you in 3rd as well.

But, on a flat hiway with no wind----cruise at 80 allllll day long with no issues.
My 82 D-150 is my daily driver and after cresting the the little rise a few miles from the house, it cruises just fine. This truck gets anywhere from 60-100 miles put on it daily (when not parked at the airport) and averages about 18mpg. Pretty good when compared to my 05 Ranger that only gets 23, and the Dodge rides nicer too.
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Old 10-05-2009, 12:02 AM
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Quote:
Originally Posted by Bryan59EC
Keep in mind---the GM and Mopar versions do not interchange.

GM should have a 10 spline input shaft vs the Dodge's 23.
So---you will need the Chev/GMC to bolt right in.


Nice little trans too-----have one in my Dodge D-150 with a 225.
If you live in an area with hills---be prepared to never get to 4th gear.
Teeny weenie 6cyl just does not have the power to pull even the slightest grade in 4th gear-----A headwind will keep you in 3rd as well.

But, on a flat hiway with no wind----cruise at 80 allllll day long with no issues.
My 82 D-150 is my daily driver and after cresting the the little rise a few miles from the house, it cruises just fine. This truck gets anywhere from 60-100 miles put on it daily (when not parked at the airport) and averages about 18mpg. Pretty good when compared to my 05 Ranger that only gets 23, and the Dodge rides nicer too.

That's why I said "MOPAR PRODUCED", but it probably was'nt clear MOPAR made them with the Chev/GMC bolt patterns for use in those trucks. I understand the earlier ones did have a different pattern and needed a different bellhousing; they then went to the pattern that GM has used forever, making them a complete bolt in and go. Hurst makes the shifter. This trans is strong, being based on MOPARs 4 speed trans used in hi perf cars.
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Old 10-05-2009, 01:03 PM
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hes talking about the little 833 4 speed OD in the 81-87 chevy trucks

good strong trans better than a t-5 and common in most regions still,. not here though.


do a google and you will see pics and such

or if you dont need Od then put in a M20-22 in it

or whatever

its just a 230

so pretyt much anything should survive behind it

even a little SM318 3 speed non synchro would(came in the 6 cyl trucks of this vintage, SM326 synchronized was optional and behind most of these v-8 trucks, and was 3" longer length though)
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