brad.arcova
Member
I'm moving parts from my old SBC to my new SBC and it seems like I need an excessive number of starter shims. Both engines have 14" 168 tooth flywheels and the starter has an offset bolt pattern for a 168 tooth flywheel. The starter worked fine on the old car with 0.100" of shims and had a paper clip's worth of clearance between the vertical portions of the flywheel and starter teeth. Now, with 0.120" of shims I still don't have enough clearance. I can definitely get the right clearance with more shims; maybe to 0.140" or 0.160" but that seems like an excessive amount of shims.
I checked the starter boss on the block and it looks fine. The mating surface on the starter looks fine. The dimensions between all the bolt holes measured with a caliper are the same on the old and new blocks.
The old block casting is 3970010....350...1969-1980...2 or 4 Bolt Main.
The new block casting is 10243880...350...1995-2000...2 or 4 Bolt Main...Vortec truck, Gen.I crate motors and "ZZ4", roller cam, one piece rear seal.
Should I be looking for something else or just go ahead and add more shims?
Brad
I checked the starter boss on the block and it looks fine. The mating surface on the starter looks fine. The dimensions between all the bolt holes measured with a caliper are the same on the old and new blocks.
The old block casting is 3970010....350...1969-1980...2 or 4 Bolt Main.
The new block casting is 10243880...350...1995-2000...2 or 4 Bolt Main...Vortec truck, Gen.I crate motors and "ZZ4", roller cam, one piece rear seal.
Should I be looking for something else or just go ahead and add more shims?
Brad