Cab Mount Question

[bamabob]

Anybody know why Chevy used the "shackle" type cab mounts for the year mounts on the 47-54 truck cabs? I would think that more rigid mounts like the front ones would best best all the way around. Figured there must be a good reason but I can't figure it out.

[coralhead]

They act somewhat of a suspension for the cab and allow some up and down movement on uneven terrain when the frame flexes.

[mknittle]

47-48 didn't use shackles, they a single cab mount in the center rear of the cab.


mark

[MrTucker]

They were used to compensate for frame flex. If you rigid mount the cab in the rear corners, you'll lose frame flexibility, which isn't a big deal on the street.

More importantly - why doesn't anyone make these? I need a set, and they're next to impossible to find.

[bamabob]

Originally Posted by MrTucker

They were used to compensate for frame flex. If you rigid mount the cab in the rear corners, you'll lose frame flexibility, which isn't a big deal on the street.

More importantly - why doesn't anyone make these? I need a set, and they're next to impossible to find.

Makes sense on the frame flex. I bought my 49 without a frame and put it on a 1995 Explorer frame which is very rigid. I forgot how light and flexible the original frames are. I started to mount it solid on all 4 corners but just having to drill a couple holes for the shackles made it too easy of a decision to stay with stock mounts.