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#1 |
Registered User
Join Date: Oct 2020
Location: Western Massachusetts
Posts: 22
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3 on the tree to sm465
Hey guys, new to the site. Just wondering if anyone had swapped a 3 on the tree for a sm465? Any pros or cons or driveshaft info would be greatly appreciated. Thanks
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#2 |
Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,602
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Re: 3 on the tree to sm465
Biggest stumbling block is the need for a high hump floor to give room for the taller trans.
You’d need to cut out your low hump and acquire a high hump and bolt it in. |
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#3 |
Registered User
Join Date: Jul 2012
Location: Whitehorse yukon
Posts: 1,218
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Re: 3 on the tree to sm465
I would scrounge a manual steering column to get rid of the 3 in the tree shifter
You will need a high hump floor pan Securing the floor pan you could weld up the original bolt ring underneath the floor pan or rivnut the main floor pan or use sheetmetal screws to hold it in I used sheet metal screws on my 68 years ago Not sure driveshaft differences between 3 in the tree and 4 on the floor i took mine from 2x4 to 4x4 when i did it Plenty of these trucks are 4 on the floor so finding a used drive shaft shouldnt be to hard |
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#4 |
Registered User
Join Date: Apr 2010
Location: So Cal
Posts: 1,437
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Re: 3 on the tree to sm465
You also need a bell housing with a 5 1/8" hole for the bearing retainer. You will need a longer driveshaft.
I found the swap to be well worth it when i did it 30 + years ago. Today, i would have looked at it from the perspective that it isn't much more work to install a 5 speed. The bigger question becomes which 5 speed.
__________________
'67 GMC 2500, 292, 4spd, AC |
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#5 |
Registered User
Join Date: Jul 2012
Location: Whitehorse yukon
Posts: 1,218
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Re: 3 on the tree to sm465
For 5 speeds nv 4500 there tough almost as tough as the old 4 speeds
Nv3500 in many 88 98 1/2 tons Nv4500 can be converted to manual clutch T5 swap there are a few that swap camaro parts and s10 parts to get the shifter forward That is the problem with the camaro 5 and six speeds shifter would be under the front of the bench seat or switch to buckets to use it where it pops up |
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#6 |
Registered User
Join Date: Apr 2009
Location: newbury new hampsire
Posts: 2,067
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Re: 3 on the tree to sm465
My 3 on the tree is a 4x4 so I would only need the 4speed or do I have to change the transfer case to
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#7 |
Registered User
Join Date: Oct 2020
Location: Western Massachusetts
Posts: 22
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Re: 3 on the tree to sm465
I’m assuming the clutch, pressure plate and flywheel are different?
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#8 | |
Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,602
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Re: 3 on the tree to sm465
Quote:
Spline count on the input shaft would be the only consideration. Would be 10 or 26 spline depending on year or trans used. Adaptor rings are available if you need to mate a small bearing housing trans to a large bearing housing bellhousing. Are you looking for a heavier duty trans or just want a better feeling trans? |
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#9 |
Registered User
Join Date: Jul 2012
Location: Whitehorse yukon
Posts: 1,218
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Re: 3 on the tree to sm465
Clutch flywheel pressureplate will be the same behousing may differ
Never seen a 3 in the tree 4x4 4x4 stick options i have seen in these trucks are sm420 and t221 Sm465 and 205 tcase Granny low in 4x4 can be very helpful |
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#10 | |
Registered User
Join Date: Jul 2002
Location: St. James, MO
Posts: 1,239
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Re: 3 on the tree to sm465
Quote:
'69: SM465 and T221
__________________
'69 Longstep K-10: 327/SM465/T-221/Closed Knuckle Dana44/12-bolt. |
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#11 |
Registered User
Join Date: Oct 2020
Location: Western Massachusetts
Posts: 22
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Re: 3 on the tree to sm465
It’s a 2wd C10
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#12 |
Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,602
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Re: 3 on the tree to sm465
What do you use it for?
A daily driver. Pulling or hauling stuff? |
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#13 |
Registered User
Join Date: Oct 2020
Location: Western Massachusetts
Posts: 22
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Re: 3 on the tree to sm465
Nothing yet. Just the beginning of a frame off restoration of the truck. It belonged to a good friend who bought it new and let it get really bad over the years. Going to give it to my daughter as a weekend cruiser when it’s done
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#14 |
Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,602
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Re: 3 on the tree to sm465
Might be better to swap in an automatic trans.
Easy to do with the body out of the way. Lots of options and opinions on that idea though. |
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#15 |
Registered User
Join Date: Oct 2020
Location: Western Massachusetts
Posts: 22
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Re: 3 on the tree to sm465
I like having a stick. Plus it’s good to have your kids know how to as well. Makes driving a little more fun. It came with 3 pedals and I’d like to leave it that way lol
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#16 |
Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,602
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Re: 3 on the tree to sm465
Hurst makes the 3speed master shift if you want a floor shifter.
You need to add another 100 bucks to the shifter price for an installation kit. https://www.holley.com/products/driv.../parts/3667271 |
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#17 |
Registered User
Join Date: Jul 2012
Location: Whitehorse yukon
Posts: 1,218
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Re: 3 on the tree to sm465
I would look for a nv4500 5 speed make the truck more highway friendly and tougher of the newer trannies
I am looking for one for my k30 project I was going to use nv3500 in my lowrider project not being able to shift gears with my broken leg changed my mind to go to a 4l80e for it |
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