I am not sure what this customer is doing for rods, but we would do this to any 750 sohc crank and supply 2.5 mm shorter Carrillos.
Why can't a base plate be used wth the stock rods?
I couldn't get my head around that one either Frank, but never having played with a stroker, thought I'd best keep it shut.
See ya March.
Sam.
At first, I thought it was the maths playing with my head but when you take a step back and think about it
It's the crank that determines the stroke. The length of the rods only determine where the piston reaches in the bore.
With the shorter rods, the piston don't pop out the block (no need for spacer) but it travels further down the block.
As long as the sleeve is long enough at the bottom and it and the pistons clear the crank, no problem.
Sam.