Hard Question about Automatic Transmission Mounts - The 1947 - Present Chevrolet & GMC Truck Message Board Network

hubcapboy · 01-10-2008, 06:56 PM

I have a '68 C10 with a 396/TH400... and I'm trying to replace my tranny mount. I've ordered and recieved part number 34-0364 from LMCtruck, but the center to center dimension where the mount bolts to the tailhousing is too small! There are only two part numbers listed on lmc for the year range, one for the th350 and the other for the th400.

I don't mind re-drilling the crossmember for a bad fit, but slotting the plate that bolts to tailhousing is pretty sketchy.

Anyone have any information on there being multiple bolt centers? I can get some pictures if I need to...

Thanks everybody!

/g

Wrenchbender Ret · 01-11-2008, 12:16 PM

If you take the old one to aparts store they can match it up. There also is a universal one that has slotted holes to fit any application. I believe its the 400 that has the widest spaceing.

Longhorn Man · 01-11-2008, 12:20 PM

and it'd probably cost 1/2 as much as LMC too.

Bob 68327 · 01-11-2008, 02:39 PM

hubcapboy · 01-12-2008, 06:19 AM

Thanks for the help guys... I ended up slotting it with my flat bastard!

it's probably a th350 mount after looking at a few more pictures. I just cut the slots and put some big ole washers on top of them. if the transmission starts to pull UP, I'm in big trouble anyway.

01-10-2008, 06:56 PM	#1
hubcapboy Registered User Join Date: Jun 2007 Location: Albuquerque Posts: 21	Hard Question about Automatic Transmission Mounts I have a '68 C10 with a 396/TH400... and I'm trying to replace my tranny mount. I've ordered and recieved part number 34-0364 from LMCtruck, but the center to center dimension where the mount bolts to the tailhousing is too small! There are only two part numbers listed on lmc for the year range, one for the th350 and the other for the th400. I don't mind re-drilling the crossmember for a bad fit, but slotting the plate that bolts to tailhousing is pretty sketchy. Anyone have any information on there being multiple bolt centers? I can get some pictures if I need to... Thanks everybody! /g

01-11-2008, 12:16 PM	#2
Wrenchbender Ret Registered User Join Date: Oct 2005 Location: Overland Park, Ks. Posts: 5,229	Re: Hard Question about Automatic Transmission Mounts If you take the old one to aparts store they can match it up. There also is a universal one that has slotted holes to fit any application. I believe its the 400 that has the widest spaceing.

01-11-2008, 12:20 PM	#3
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Re: Hard Question about Automatic Transmission Mounts and it'd probably cost 1/2 as much as LMC too.

01-11-2008, 02:39 PM	#4
Bob 68327 72 Chevelle Club Join Date: Jun 2007 Location: Newton , Iowa Posts: 2,052	Re: Hard Question about Automatic Transmission Mounts __________________ I Have The Right To Remain Silent,But Lack The Ability 1972 Chevelle ... Mine 2006 Trailblazer... Hers 2002 Buick century ... Kids 2002 K1500 Z-71 EXT CAB ... Daily Driver 2005 Rockwood Roo ... For Camping 1974 Harley-Davidson XLH Sportster 84'' stroker

01-12-2008, 06:19 AM	#5
hubcapboy Registered User Join Date: Jun 2007 Location: Albuquerque Posts: 21	Re: Hard Question about Automatic Transmission Mounts Thanks for the help guys... I ended up slotting it with my flat bastard! it's probably a th350 mount after looking at a few more pictures. I just cut the slots and put some big ole washers on top of them. if the transmission starts to pull UP, I'm in big trouble anyway.



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