Manual Cross Member/Automatic - The 1947 - Present Chevrolet & GMC Truck Message Board Network

69ChevySWB · 06-05-2002, 12:04 AM

What is the difference between an manual and automatic cross member? I would rather not have to cut off the manual crossmember but I want to put an automatic in the truck.

Blue68 · 06-05-2002, 12:16 AM

I really doubt you can get an auto in with the manual cross member in place. Auto trucks don't need it anyway. It's only 8 rivets to cut out.

The difference is that the manual mounts directly at the back of the engine and the automatic mounts at the rear of the automatic transmission.

Your best bet might be to crawl under your manual truck and take a gander at how things are set up then crawl under any automatic truck for a comparison.

The swap over isn't too difficult, but make a game plan and list of what you think you'll need, then go through it again. Don't forget about thinks like shift linkage, output yoke/shaft, and even the starter can be different.

06-05-2002, 12:04 AM	#1
69ChevySWB Registered User Join Date: Apr 2002 Location: Little Elm, Texas, USA Posts: 237	Manual Cross Member/Automatic What is the difference between an manual and automatic cross member? I would rather not have to cut off the manual crossmember but I want to put an automatic in the truck. __________________ Brian Thompson 99 2500 Silverado 6.0 05 Suburban (Wife's) 67 Mustang (Wife's)

06-05-2002, 12:16 AM	#2
Blue68 Registered User Join Date: Apr 2000 Location: Frisco, Tx, USA Posts: 606	I really doubt you can get an auto in with the manual cross member in place. Auto trucks don't need it anyway. It's only 8 rivets to cut out. The difference is that the manual mounts directly at the back of the engine and the automatic mounts at the rear of the automatic transmission. Your best bet might be to crawl under your manual truck and take a gander at how things are set up then crawl under any automatic truck for a comparison. The swap over isn't too difficult, but make a game plan and list of what you think you'll need, then go through it again. Don't forget about thinks like shift linkage, output yoke/shaft, and even the starter can be different. __________________ http://home.comcast.net/~r.landrum/w...tos.html-.html '68 C-10 LWB, '98 Z-71 350 w/accessories (Serpentine), Edelbrock Performer, Edelbrock 1405 (600cfm) carb, GM HEI, CompCam Extreme 4x4 roller cam, Thorley Headers, Carter Electric Fuel Pump, Vintage Air, 700r4, 3.73, disc brakes and power steering upgrades.



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