[Classic Heartbeat]

I recently did this swap into my 67 3/4 ton. I chose to do the entire crossmember and power break system. The drum brake system will stop the truck, but I feel it is dangerous because the two different types of brakes require two different pressures for them to work right. You have the parts, so use them... It is a lot safer that way and will only add a little time. Your frame is drilled for the different brake line clamps, so that isn't a problem. The crossmembers are different also. They are different in two places. 1.) The location for the mounts for the rubber brake lines. 2.) The forward hole in the side that has the bolt welded to it is slightly off also. (Easy fix with a file.) Anyway swapping the entire thing will eliminate any problems that will arrise in the future. Problems like what year do I need ball joints, tie rod ends, bearings, brake lines or any other host of things. If you swap the whole works then as far as the front end is concerned, it is 72! The other problem that the old crossmember presents is the location of the flexable rubber line. The 71-72 crossmember, it is located on the front and the 67-70 is on the rear. That creats pinching problems with the rubber line and may not cause an immediate hazzard, but surely will in the future as the lines pinch pretty bad when turning your wheels full one way or the other. WES www.ClassicHeartbeat.com