starter shimming

[SixSpeed454SS]

@tom vito

I always thought there was only to different sbcstarts, straight pattern and staggered pattern.

@yelo69"

There are 2 different sbc flexplates…A 150 something tooth and a 160 something tooth, which take 2 different starter noses…There is also different angles on the noses…Possibly your using the 150 something starter nose with a 160 something flexplate?

There is 153 tooth & 168 tooth flywheels or flexplates. The staggered nose is for 168, and straight nose is for 153.

Could be the other way around. It’s been awhile, but I am almost positive it is this way.