Max, If my Briggs info is correct then the throw is the same. Now with Norm on the not using the old crankshaft; unless, necessary.
I have done horizontal shaft log splitter engines new engine installs where I had to remove up to 3/4 of an inch of the crankshaft PTO end so I could reuse the pump mounting brackets.
One question the comes to mind here. Is the pump using the 7/8 step down or is using the full one inch shaft? If using the full one inch then it is simple to shorten the crankshaft. Otherwise there are two options.
1>Extend the current pump mounting bracket if no clearance issues.
2>Install a different pump.
Last edited by AVB; 03/02/23 08:50 PM.