My parts book seems to indicate that the crossmember for 1967 Passenger vehicle would be the same for both a TH400 car and a 4 speed car- depending on whether the car is early or late build. My build of May 24 1967 would fall into the late build category I believe. My car had the M20 swapped out for a TH400 some time ago. The crossmember is attached to the frame at the rear mounts- which may have been welded in at the time of the swap over (I have not confirmed this yet. I haven't even confirmed that the frame is original to the car, although I believe that it is). My question is this: When I put the M20 back in, will I be able to use the same crossmember to support the M20 as long as it is mounted in the front mounting brackets? Or will I need to get a different one? I've searched this site and have not seen the answer archived. I crawled underneath for a good look, and the crossmember looks just like (to my untrained eye) the one pictured, that I found on Ebay advertised as correct for 1967 Impala with 4 speed. As I said, the crossmember in the car is currently supporting a 1966 TH400, but whoever (restored) this car maybe 30 years ago was not a stickler for "details". For example, the gas tank is incorrect- too small and was successfully (is that the right word?) installed with the aid of a spacer made of a piece of lumber! So I can't assume anything.
Any factory T-400 1965-1970 I ever saw had both sets of crossmember tabs.
I've only seen crossmembers with 2 bolt holes for trans mounts but I see single bolt crossmembers on here.
Crossmembers are physically interchangeable with any I have dealt with.
The crossmember shown in your photo is one I was selling that is correct for 1969, and possibly earlier years. It has a forward facing plate for the tranny mount, and a rear facing plate for the shifter. In stock applications, the shifter is bolted to the crossmember, and the crossmember requires the rear facing plate. I think 1967 stock shifter is also bolted to the crossmember, but not 100% sure.
Are you using a stock shifter or an aftermarket (Hurst)?
For your M20 install, yes you'll need to utilize the front frame brackets (which are also used for TH350 mounting)
My current thinking is I'd like to have a Hurst shifter with adapter to allow the stock Muncie handle. I want the stock look with the added benefit of better shifting. From what I've read, that can be done while maintaining proper shifter handle location and look. I don't have any linkage or pedals hump, or clutch fork. I have an NOS M20, shifter handle, console and bell housing. That's it. The 4 speed stuff is a priority for me because one angle I'm looking at it getting the drivetrain done so I can drive the car more or less as it is while I get prepared for the frame off restoration.
I followed it when doing the conversion on my 1970 and it worked very well. Member Howmac should be able to help you out with some of the necessary bits and pieces, and a fellow in the USA named Chad Kiefer (I'll PM you his info) should be able to help you out with a rebuilt Hurst Competition Plus shifter. I got a 69 one from him for my application and he provided everything shifter related.
-- Edited by seventy2plus2 on Wednesday 4th of November 2015 01:26:17 PM
A real quick one. Keep in mind the crossmembers for convertibles are 2" shorter than non convertibles, that's to take into consideration of the 1" wider frame rails on the convertibles.
