Buick 350 bolt pattern

Hi there can anyone help with mounting bolt and dowel pattern dimensions from crankshaft centre for transmission mounting area on the back of the block on a 350?

Many thanks

 

I know you can use a SBC flywheel if you oval one of the bolt holes and add a balance weight. I have one on my 340.

Jim

 

As far as the bellhousing patten, that is the old BOP pattern and it shares the locating pins and I think maybe 4 bolt locations with the SBC bell. There are adapter plates 1/8" thick available.

Jim

 

Hi Jim thanks for your response. It is the X Y dimensions I need though, from the crank centre line from the original engineering drawings if possible.

 

Hi Larry. Well you just can't get better than that! You've saved me a load of time with a coordinate measuring arm. Thanks, all the best.
Kind regards
Mash

 

I wonder how much money an time you have saved people over the years?

 

Yes Larry we appreciate you.

 

Agree! ^

 

"Chevy" and "BOP" share the dowel pin locations, and the lowest bolt holes. The holes above the dowels are in different places.