What does this schwitzer fan clutch go on?

[King M.]

image.jpgimage.jpgimage.jpgI picked up this fan clutch the other day it is dated 2 23 67 SC and has the sb shaft.

[Joe L.]

Re: What does this schwitzer fan clutch go on?

[ATTACH=CONFIG]49955[/ATTACH][ATTACH=CONFIG]49956[/ATTACH][ATTACH=CONFIG]49957[/ATTACH]I picked up this fan clutch the other day it is dated 2 23 67 SC and has the sb shaft.

King------


It looks to me almost like a GM #3937771 which was used on some 68-70 Corvette big blocks. However, the 3937771 has the shorter shaft and was not being manufactured as of early 1967. So, this is the "small block version" of the 3937771. I don't know what the part number was but I don't think it was ever used on a Corvette.

It may be a GM #3883158 which was used on some trucks during the late 60's. It's also possible it's a clutch used on some non-Chevrolet model GM cars or, even, some non GM cars.

[David L.]

Re: What does this schwitzer fan clutch go on?

King,

I would tend to agree with Joe.

My 1967 Chevrolet Parts catalogs (April & July 1967) list GM # 3883158 as the fan-clutch part number for 65-66 and 67 trucks and is described only as "(7 1/8" dia.)" . GM # 3883158 is not listed in my 1966 Chevrolet Parts Catalog (Oct. 1965).

As far as I know the 1963-1967 Corvettes were issued only the 6" diameter fan-clutches.

Dave