I am troubleshooting a hard starting motor. Long story, made short... The original owner put in a new motor back in 1977 he bought from the local GM parts counter.

He claims the 1965 C30 originally came with a 230 6 cyl. The engine he placed in was a 292. Questions:

1. Do you think the new engine came with a Harmonic Balancer from GM back in 1977?

2. Will a Harmonic Balancer from a 230 fit a 292 and will the engine run?

3. The current Harmonic Balancer on the 292 only has one belt grove. Does anyone know if a 1965 230 Harmonic Balancer had one belt grove? A replacement Harmonic Balancer for the 1977’s 292 shows 2 belt groves.


1960 Chevy Apache (C10)
1965 Chevy C30 Dump Truck
1966 Chevy C30 Tow Truck