HS40 on Rupp, 3" crank dimension question

[danford1]

I read where Rupp's used a 3" crank on their HS40 engines for use with a torque converter.
Ok. Now... Can someone tell he where they measure the crank from? I have a standard length crank and want to make a spacer but I need an accurate way of measuring what I have vs where Rupp measured it from... Then I can make the proper length spacer.

Thanks

Danford1

 

[capguncowboy]

I don't have one here at the moment, but if I recall correctly, they were measured from the crankcase to be 3". If you measured from the shoulder on the crank, it was 2-7/8

 

[danford1]

Thanks. Do you happen to know the length of a stock crank?

Danford1

 

[capguncowboy]

Standard tecumseh cranks? I think they're 2-1/2. It's been a while since i measured one though