TH-350 back to standard - 70 C-10 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Blue'66 · 08-08-2002, 10:50 PM

Just bought a '70 C-10 which was has the original 350, but was changed from three on the tree to a TH-350. This was done in the late seventies due to the owners knee problem. In the future, I want to put it back to a manual trans. What are the differences in crossmembers from the three speed to the TH-350. The TH-350 seems to be properly in place, so I'm wondering if they switched crossmembers, too. Also, is the driveshaft different between the two.
I want to either put it back to the three on the collumn, or put in a SM-465 trans.

Thanks for any imput.
-John

Super Chevy · 08-09-2002, 12:14 AM

driveshaft is the same if you have the 6" tailshaft TH350, the yokes are the same. The TH350 uses a rear mount crossmember while the original 3 speeds used a bellhousing crossmember.

my .02

slam33 · 08-09-2002, 10:25 AM

These's also the mount for the clutch linkage z-rod, the hole in the firwall for the clutch rod, the clutch pedal, the starter motor, the steering colume assembly and linkage. Check to see that the distributor is the manual trans one, has a differant curve to it. Square head pipe plug to close off thr intake manifold hole for the vacume fitting unless you have air or power brakes. I've been gettting everything for the conversion from 3 man to auto, going to do it in about a month.

Blue'66 · 08-09-2002, 11:55 AM

Slamm 33, are you converting from three on the tree to auto? I need everything for the manual setup, except the bellhousing, starter, z bar, pressure plate, and clutch. Basically I', looking for the linkages and steering coulumn for the three on the tree setup. If you have any of these, would you be intersted in parting with them?

JHickson6 · 08-09-2002, 01:41 PM

Blue'66 I have a 3 on the tree steering coulmn for sale, that I just need to take out of my truck. If you don't mind the color, than make me an offer. I also would have had the linkages to connect to the transmission but I threw them away a week ago, sorry!

Let me know

Jared

JHickson6 · 08-09-2002, 09:16 PM

I found this, it's the Reverse/ 1st shift linkage. If you want it make me an offer.

Jared

08-08-2002, 10:50 PM	#1
Blue'66 Registered User Join Date: Dec 1999 Location: Akron, New York Posts: 379	TH-350 back to standard - 70 C-10 Just bought a '70 C-10 which was has the original 350, but was changed from three on the tree to a TH-350. This was done in the late seventies due to the owners knee problem. In the future, I want to put it back to a manual trans. What are the differences in crossmembers from the three speed to the TH-350. The TH-350 seems to be properly in place, so I'm wondering if they switched crossmembers, too. Also, is the driveshaft different between the two. I want to either put it back to the three on the collumn, or put in a SM-465 trans. Thanks for any imput. -John __________________ '48 1/2 ton 3100 '55 1 1/2 ton 4400 '59 Willy's CJ-5 '65 3/4 ton 4x4 '70 C-10 All drivers, no show trucks.

08-09-2002, 10:25 AM	#3
slam33 Registered User Join Date: Aug 2001 Location: Long Beach, Ca Posts: 1,432	These's also the mount for the clutch linkage z-rod, the hole in the firwall for the clutch rod, the clutch pedal, the starter motor, the steering colume assembly and linkage. Check to see that the distributor is the manual trans one, has a differant curve to it. Square head pipe plug to close off thr intake manifold hole for the vacume fitting unless you have air or power brakes. I've been gettting everything for the conversion from 3 man to auto, going to do it in about a month. __________________ 71 LWB 350/350still working on it but it's going tp be sweet. www.geocities.com/stevemau/slam33page.html " TARGET=_blank>http://www.geocities.com/stevemau/slam33page.html?1004806705410 </A>

08-09-2002, 11:55 AM	#4
Blue'66 Registered User Join Date: Dec 1999 Location: Akron, New York Posts: 379	Slamm 33, are you converting from three on the tree to auto? I need everything for the manual setup, except the bellhousing, starter, z bar, pressure plate, and clutch. Basically I', looking for the linkages and steering coulumn for the three on the tree setup. If you have any of these, would you be intersted in parting with them? __________________ '48 1/2 ton 3100 '55 1 1/2 ton 4400 '59 Willy's CJ-5 '65 3/4 ton 4x4 '70 C-10 All drivers, no show trucks.

08-09-2002, 01:41 PM	#5
JHickson6 I Love This Stuff! Join Date: May 2002 Location: Winnipeg, Manitoba, Canada Posts: 739	Blue'66 I have a 3 on the tree steering coulmn for sale, that I just need to take out of my truck. If you don't mind the color, than make me an offer. I also would have had the linkages to connect to the transmission but I threw them away a week ago, sorry! Let me know Jared Attached Images __________________ My Rides 1967 C10 In Pieces for now 1985 Ford B700 SourPuss Bus - BIG BLUE 2003 Silverado CITY WORKER YELLOW!!

08-09-2002, 09:16 PM	#6
JHickson6 I Love This Stuff! Join Date: May 2002 Location: Winnipeg, Manitoba, Canada Posts: 739	I found this, it's the Reverse/ 1st shift linkage. If you want it make me an offer. Jared Attached Images __________________ My Rides 1967 C10 In Pieces for now 1985 Ford B700 SourPuss Bus - BIG BLUE 2003 Silverado CITY WORKER YELLOW!!

08-09-2002, 12:14 AM	#2
Super Chevy Registered User Join Date: Feb 2001 Location: Ohio Posts: 1,025	driveshaft is the same if you have the 6" tailshaft TH350, the yokes are the same. The TH350 uses a rear mount crossmember while the original 3 speeds used a bellhousing crossmember. my .02



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