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Author Topic: 1985 C30 SM465 to TH700R4 conversion  (Read 3170 times)

Offline Fatmanz85

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1985 C30 SM465 to TH700R4 conversion
« on: December 24, 2014, 07:27:32 am »
Hate to give up the stick shift, good power, but the clutch is no longer my friend...... bad knees and getting older, I find I need a automatic. I have a 1988 C2500 with a good TH700R4 in it,( good low mileage running gear just bad body). Has anyone done this swap before?
« Last Edit: December 24, 2014, 07:48:39 am by Fatmanz85 »
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1985 C30 Crew Cab Silverado, 6.2L 3 speed granny

Offline Irish_Alley

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Re: 1985 C30 SM465 to TH700R4 conversion
« Reply #1 on: December 24, 2014, 08:48:30 am »
i blew out my knee when i was 17 or so, when i drive my 79 (sm465) it bothers me and my knee starts shaking if i have to hold the clutch in long. so i feel your pain, im looking for the swap if i can find one ill post it
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Offline VileZambonie

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Re: 1985 C30 SM465 to TH700R4 conversion
« Reply #2 on: December 24, 2014, 09:22:53 am »
Pretty straight forward swap. See if your radiator is already setup for a transmission cooler. If you are making it column shift you'll need the linkage, column etc. Driveshaft length will be different.
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Offline roundhouse

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Re: 1985 C30 SM465 to TH700R4 conversion
« Reply #3 on: December 24, 2014, 10:58:37 am »
A hydraulic clutch would be a lot less leg effort



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Offline zieg85

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Re: 1985 C30 SM465 to TH700R4 conversion
« Reply #4 on: December 24, 2014, 11:21:11 am »
Quote from: roundhouse on December 24, 2014, 10:58:37 am
A hydraulic clutch would be a lot less leg effort



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1985's are juice clutches
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Offline roundhouse

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1985 C30 SM465 to TH700R4 conversion
« Reply #5 on: December 24, 2014, 10:38:20 pm »
Quote from: zieg85 on December 24, 2014, 11:21:11 am
Quote from: roundhouse on December 24, 2014, 10:58:37 am
A hydraulic clutch would be a lot less leg effort



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1985's are juice clutches
wonder if you could use a brake MC and a hydroboost or a vacuum booster
To reduce the pedal effort to almost zero ??

Alot of big trucks have a air assist on the clutch



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« Last Edit: December 27, 2014, 10:38:02 am by roundhouse »
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