For my 351W install I was wondering if i could reuse the motor mount bolts from the 250 IL motor mounts; are they the same thread for the V8 motor mounts?
The V-8 mounts use two 7/16 NC x 1 1/8" grade 8 bolts for each mount. If the bolts are the same on your 250 then the answer is yes - if not, no.
Well what about the long bolt that goes through the v8 motor mount, could I get that from a hardware place?
Yep. When I helped koopstamaverick put a 302 in his '69.5, we just took one of the motor mounts down to Lowes with us and found a grade 8 bolt long enough to go all the way though and got nuts, washers and lock washers to go with it. I don't recall exactly what size bolts we got, but just take the rubber mount with you and find one that fits right.
