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Jul 21st, 2025 | | | | Joined: Jul 2015 Posts: 203 'Bolter | | 'Bolter Joined: Jul 2015 Posts: 203 | I've searched and read multiple threads but never really found an answer. I have a 54 235 with narrow pulleys on the water pump and alternator. The crack pulley belt groove is wider, so the V-belt rides on the shaft and squeels like a pig. I've been looking and cannot find a 235 crank pully/harmonic damper with narrow belt for less than a house payment. Am I overlooking something easy? I only need one belt groove.
1953 GMC 1-Ton Pickup with 350 and 700R4
| | | | | Joined: Sep 2001 Posts: 29,262 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,262 | A 1953 and later truck (and, maybe, car) pulley would work.
I think the diameter of some pulleys are different (some car 235s) but that might not be a big deal. Pre '68 Dave would know. | | | | | Joined: Jan 2001 Posts: 5,320 'Bolter | | 'Bolter Joined: Jan 2001 Posts: 5,320 | A 1953-54 car or truck balancers would be best, but an acceptable substitution is to use a 1955-62 truck balancer.
The 1955-62 truck balancer is designed for a ½” belt but may be used with a â…œ" belt. This will allow the belt to run deeper in the groove and in effect will reduce the diameter to very near the correct size.
The 1955-62 passenger balancer is also designed for a ⅜" belt, but because of the larger diameter there is a increased risk of the fan breaking from the high speed flexing.
See the USA in your vintage Chevrolet! My Blog | | | | | Joined: Jul 2015 Posts: 203 'Bolter | | 'Bolter Joined: Jul 2015 Posts: 203 | Thanks guys! I'm looking at the DamperDudes site and they have two listed, one with crank starter and one without. I do not know what they mean. I have the foot-stomp starter on my truck.
1953 GMC 1-Ton Pickup with 350 and 700R4
| | | | | Joined: Sep 2001 Posts: 29,262 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,262 | Chad M,
My guess is that the "crank starter" means there are fittings on the front of the balancer for a hand crank (that would be on a pre-54 balancer, I think). | | | | | Joined: Jun 2001 Posts: 169 'Bolter | | 'Bolter Joined: Jun 2001 Posts: 169 | Chad,
May have what you need. Sent a PM.
Mine are large diameter, 3/8 belt.
Paul | | |
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