'64 Front Suspension

[Patrick F. McInerney]

I am rebuilding all of the suspension on my '64. As originally equipped, the suspension was standard.
I'm not sure that I have the correct coil springs. For P/N3851100 what is the correct unloaded height, number of coils and diameter of coil steel?
On upper and lower control arms are there two diameters of washers for the 3/8" and 7/16" bolts which contain the support shafts to the arms? What are the correct washer diameters?
Thanks for your help.

Pat McInerney

[Joe L.]

Re: '64 Front Suspension

Patrick------

The GM #3851100 coil springs are 15-13/32" free length and are of 11 coils. I am not sure of the coil spring material diameter. I think that it's 9/16" but I'm not sure.

The lower control arm bushing retainers are GM #3714369 and they're still available from GM. These are "cup-shaped" retainer with a 15/32" hole in the center and an OD of 1-7/8". The upper control arm bushing retainers are GM #9785742 and are also still available. These are also "cup-shaped" with a 13/32" hole in the center and are also 1-7/8" OD.

[Joe L.]

Re: '64 Front Suspension

Patrick------

The GM #3851100 coil springs are 15-13/32" free length and are of 11 coils. I am not sure of the coil spring material diameter. I think that it's 9/16" but I'm not sure.

The lower control arm bushing retainers are GM #3714369 and they're still available from GM. These are "cup-shaped" retainer with a 15/32" hole in the center and an OD of 1-7/8". The upper control arm bushing retainers are GM #9785742 and are also still available. These are also "cup-shaped" with a 13/32" hole in the center and are also 1-7/8" OD.

[Joe L.]

Correction

The upper retainers are 1-25/32" OD, NOT 1-7/8" OD

[Joe L.]

Correction

The upper retainers are 1-25/32" OD, NOT 1-7/8" OD