NOS 396 427 327 Camaro Corvette Water Pump Pulley 2 Groove 3850680 3863102

Description

NOS 2 Groove pulley 3850680
GM manufactured pulley for GM engines to use in
1965-66 Pass 396, 427
1966 Corvette 327 PS w CAC
1966 Corvette 62 Amp 427 Sp H perf
1964-1966 V8 with AC Chevelle
1965-1966 327 CAC with air
Been sitting on a shelf in a warehouse for 50 years
We have hundreds of this pulley, only a few are marked with this part # 3850680
Comparison measurements to GM 3890419CT pulley
This pulley             GM 3890419CT pulley
OD      6.311                    6.315
Height  2.730                   2.815 pulley side down measured thru hole
Bolt spacing 1.725
Center hole .625
Belt spacing looks to be .625
The height measurement can be corrected by adding a spacer behind the pulley and the hub. Simple flat washers on the bolts can correct this.