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Tranny swap TH400 to SM465
- Thread starter 53chevy
- Start date
you mean the 465 is 10 spine???if you have a 465 10 spline and a 205 10 spline all you will need is a crossmember,adapter,and all the other stuff...
I did the same swap, took me an afternoon to do after collecting all my parts.
I'd suggest going with a hydro clutch setup, makes retrofitting a real breeze
I'd suggest going with a hydro clutch setup, makes retrofitting a real breeze
Jishory
1/2 ton status
SierraClassic said:I did the same swap, took me an afternoon to do after collecting all my parts.
I'd suggest going with a hydro clutch setup, makes retrofitting a real breeze
damn, AN AFTERNOON? took me like a damn month
just count the splines on the output of the transfer case and the splines on the input of the 205...here refer to my post your stuff should look like mine..http://coloradok5.com/forums/showthread.php?t=198923http://coloradok5.com/forums/member.php?u=17220
Jishory said:
Don't feel bad, when I first started with these trucks, it took me 5 months to diagnose, and repair a blown intake gasket
Your TH400 / 205 combo will probally be a 32 spline setup. The SM465 also can be had in a 32 spline setup, but was only available as such after 83ish...
Prior to then, it was a 10 spline setup. The 32 spline is a more desireable combo, as the 10 spline shafts wear out, and eventually can strip out, or break the adapter sleeve... 10 spline setups are very common, and can be bought for like 250 - 300 bucks, with driveshafts and brackets.
As I mentioned earlier, I would highly suggest a hydro clutch, even if you use a mechanical bellhousing with a Novac hydro kit. Drilling holes for linkages is very time consuming, while the hydro pedals pretty much bolt straight in.
When I installed my SM465 / 205, I just unbolted the cab hump, dropped the 2wd TH400 I had in there out, then bolted on the bellhousing / clutch stuff, slipped the new transmission in, and rested it down on the new crossmember by the adapter. I then went to work hooking up the clutch (drilled a 1.5" hole in the firewall for the master cylinder, then two holes for the supports).
Had a buddy over, so we wrestled the 205 up and in, bolted it up, hooked up the driveshafts, then bolted a new tranny hump on. Hooked up the reverse switch, and speedo cable, then hit the road!
I second the swap expecially to the hydraulic clutch...
I had a turbo 400 with b&m shiftkit.. would rip your head off... I then got to drive a truck with a smc... boy let me tell you what.... the power control was so worth it...
i actually found a truck... 1978 chevy 3/4 ton... 350/smc465/np205/d44/14bff/4.56's factory....
$500 and ran.... i took it and swapped everything over...
the only thing I didnt like was the mech clutch.. I went to a hyro setup off of a 1985 fullsize jimmy i bought for $100... and will never go back to...
1. a automatic
2. a non hydro clutch setup.....
it is so nice..
it is funny too that i did my swap in 1989 (auto to manual) and there was no internet or any tech docs.. my father is a mechanic and said it was easy.. we did it in 1 weekend...
wanna see 2 trucks apart in a yard...
there she is ... the beauty...
I had a turbo 400 with b&m shiftkit.. would rip your head off... I then got to drive a truck with a smc... boy let me tell you what.... the power control was so worth it...
i actually found a truck... 1978 chevy 3/4 ton... 350/smc465/np205/d44/14bff/4.56's factory....
$500 and ran.... i took it and swapped everything over...
the only thing I didnt like was the mech clutch.. I went to a hyro setup off of a 1985 fullsize jimmy i bought for $100... and will never go back to...
1. a automatic
2. a non hydro clutch setup.....
it is so nice..
it is funny too that i did my swap in 1989 (auto to manual) and there was no internet or any tech docs.. my father is a mechanic and said it was easy.. we did it in 1 weekend...
wanna see 2 trucks apart in a yard...
there she is ... the beauty...
blazin_blazer
1/2 ton status
good ol fashion red neck tech. i love it
it is funny too that i did my swap in 1989 (auto to manual) and there was no internet or any tech docs.. my father is a mechanic and said it was easy.. we did it in 1 weekend...
wanna see 2 trucks apart in a yard...
it is funny too that i did my swap in 1989 (auto to manual) and there was no internet or any tech docs.. my father is a mechanic and said it was easy.. we did it in 1 weekend...
wanna see 2 trucks apart in a yard...
it is funny too that i did my swap in 1989 (auto to manual) and there was no internet or any tech docs.. my father is a mechanic and said it was easy.. we did it in 1 weekend...
wanna see 2 trucks apart in a yard...
are you my twin?
1988 i did my swap.. same thing.. no internet... no tech docs...
i took a auto truck and a manual truck.. swapped my auto cab to the manual frame.... then swapped over the pedal assembly and everything.. my father is a mechanic too.. damn good one.. if it ever ran.. he can get it to run again...
p.s. my truck was made from about 8 in a junkyard....we know the guy and i got a good deal.... and yes that is me @17 with a mullet!!!
2 trucks totally apart
my manual frame which this is the truck that is still with me.. well most of the parts....
blue bed side
grey bed side and my mullet shot
twojoints444
Registered Member
I did a 700r4 to 465 recently took me FOREVER to find all the parts cuz I was stupids and didn't just buy a parts truck. After sum help from some good people(Russell) I got er did and now I got one hell of a truck. Wish she had the 5th gear sometimes but I think my gear ratio will calm down once I put my 38s on as I'm only running 31s now with 410 gears and no tach or spedo to tell me what's go on hahaha
79bonanza
1/2 ton status
im not tryin to brag but when i worked at the gm dealership we brought a 2003ish or so 2500 with the alison in it and swaped a 5 speed into it in about three hours, clutch, trans crossmember d-shafts flywheel and shifter junk in the floor boards but we were both really familiar with these trucks and we hade all the parts on hand waitin for us. started at 8 am when we got there and drove it to lunch haha then took the rest of the day off for a break haha
twojoints444
Registered Member
And that poor guy probably got charged for 2 day labour LOL u sacs hahaha
79bonanza
1/2 ton status
hahah nah it was the guy i worked withs truck lol, we took the morning off so we didnt get inturupted while swaping everything out haha got a free lunch for my labor, always worth it haha
