Tranny Crossmember Fabbing.... - Pirate4x4.Com : 4x4 and Off-Road Forum

MochaMike · 03-07-2003, 04:47 PM

For those who don't know, I have 62' 80 with SBC 350, Dana 44s Front & Rear (Detroit & Spool, 4.88s, & discs all around), going to a SM465 & Dana 18.

I got the new Tranny in this week, & I have old crossmember that was fabbed up years ago.
The good news is it looks like it's a perfect fit.
I just removed the old Parking Brake lever, & just have to Mount it (the crossmember) about three inches further to the rear.

I was originally planning on just drilling new holes, & puting some 1/4" plate (about 4-6" long) on the outside of the frame rail to re-inforce it.

With all the flex I'll be gettin while wheelin', is this a good idea?

Or should I cut a larger hole & run tube/pipe through to absorb (sp?) the pressure of the bolt onto the frame rail?

Here's the crossmember with the old tranny...

Here is the new Tranny & TC mounted:

Ben W · 03-07-2003, 05:05 PM

I would definately sleeve the holes with the tube/pipe.

Binder · 03-07-2003, 05:35 PM

I agree with Ben. What size bolts are they? 1/2" shc 40 pipe works well with 5/8" bolts. Just run a 5/8" bit through it to clean it up a bit. I would weld the pipe to the frame also.

03-07-2003, 05:35 PM	#3 (permalink)
Binder Zeus of the Sluice Join Date: Sep 2000 Member # 1684 Location: Everett Wa USA Posts: 2,759	I agree with Ben. What size bolts are they? 1/2" shc 40 pipe works well with 5/8" bolts. Just run a 5/8" bit through it to clean it up a bit. I would weld the pipe to the frame also. __________________ S.N.O.R.T.

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03-07-2003, 05:05 PM	#2 (permalink)
Ben W Granite Guru Join Date: Feb 2000 Member # 226 Location: Yakima, WA Posts: 4,058	I would definately sleeve the holes with the tube/pipe.