73-87chevytrucks.com

73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: 989kkzx on April 16, 2016, 11:21:30 am

Title: 73 auto to manual transmission
Post by: 989kkzx on April 16, 2016, 11:21:30 am

have a 73 chevy 3/4 ton 4 speed 4x4 and the cab is pretty rusted. i have found another one of the same year the only problem is that it has
a automatic in it and the rusted out cab i have now is a manual. would it be hard to convert the automatic cab to a manual transmission
the rusted out cab has every thing i would need. what would be some troubles i would face? any help would be awsome.
Title: Re: 73 auto to manual transmission
Post by: Captain Swampy on April 16, 2016, 11:43:52 am
I believe the high hump will unbolt. Set it on the other floor and mark it. Cut out the low hump and bolt the other one in. If you have a cut off wheel it won't be that hard. Beware of a steady stream of sparks starting the sound deadener (on the firewall) on fire.
Title: Re: 73 auto to manual transmission
Post by: 989kkzx on April 16, 2016, 01:59:04 pm
what do you mean by the high hump?
Title: 73 auto to manual transmission
Post by: 989kkzx on April 16, 2016, 02:06:22 pm

have a 73 chevy 3/4 ton 4 speed 4x4 and the cab is pretty rusted. i have found another one of the same year the only problem is that it has
a automatic in it and the rusted out cab i have now is a manual. would it be hard to convert the automatic cab to a manual transmission
the rusted out cab has every thing i would need. what would be some troubles i would face? any help would be awsome.


Reply
Quote

Title: Re: 73 auto to manual transmission
Post by: 1967KaiserM715 on April 16, 2016, 07:10:51 pm
The center transmission hump, there is a "high" hump and a low hump, low hump was only for 2wd automatic transmissions,
2wd manual transmission and all 4wd trucks received the high hump

I agree that removing the hump and marking is the best way


Sent from my iPhone using Tapatalk
Title: Re: 73 auto to manual transmission
Post by: Blazin on April 17, 2016, 07:03:35 am
Two wheel drive automatic, and 3 speed manual transmission trucks got the low center hump.
All SM465 2 wheel drive trucks got the high hump center floor.
All 4x4 trucks standard shift, and automatics have the high center hump floor.
You will need to swap out the pedal assembly, and switch your steering column. Or remove the shifter pin, and remove the shift lever. If you do that you will still have the safety neutral switch operated by the shift collar.
The automatic center hump has a stamped mark where the shifter hole goes.