Help with clamshell mount stands in a 71
 

I am trying to install the later model motor mount stands in my 71 pickup, the top two bolts line up on the top of the c frame, but the two on the X-member do not. Can I drill the holes and mount it like that and maintain the correct geometry?

Re: Help with clamshell mount stands in a 71
 

:welcome2: To the board.

This thread should help.

http://67-72chevytrucks.com/vboard/s...d.php?t=128765

Re: Help with clamshell mount stands in a 71
 

Thanks for the welcome and your help, much appreciated. I look forward to discussing and sharing tech ideas and issues.

Re: Help with clamshell mount stands in a 71
 

So why do the newer style engine mount stands need to have its bolt holes elongated for the mount? It wont bolt up correctly without some adjustment or what???

Re: Help with clamshell mount stands in a 71
 

Ok, after a short hiatus I have picked up my project. I followed the thread's instructions and got the engine stabbed, I am now having a problem with the tranny contacting the floor pan when the X-member and trans mount is installed, I have contact where floor pan meets the firewall, and the tailshaft contacts the floor pan. Should I loosen the mounts, lift the engine and see if the engine will sit down some, or modify my X-member to bring the mounting point down some? I need about 1/2 to 3/4 of an inch to
clear the floor pan.

Re: Help with clamshell mount stands in a 71
 

What transmission? If a TH400, you will need the bolt-in high hump. I have the 73-up stands in my '70 with a 700R4 with no floorpan clearance problems.

Re: Help with clamshell mount stands in a 71
 

I am using a TH350 out of a 79 suburban. The cross member I found was off a 69 or 70 GMC that had a 350/TH350, whether it was original I dont know. My 71 was originally a six cyl with a 3spd manual, I had to cut out the riveted in crossmember because of how far forward it was, now that you mention it, I think it was lower in the center, however I trashed it. Can you please describe the "high hump" part of this crossmember?