Originally Posted by pinkbits
10.5 is with open chamber and 6inch (302 )rods and acl pistons ( they make a piston to suit 351 with 6 inch rods-part 8mkry9356)
theres nothing wrong with modifying a piston , if its done accurately and the short block is ballanced properly
The question was are they pop tops or flat top. Just because there is a 6 inch rod on a 351, doen't mean the compression is going to change.
The only piston i see mentioned for the 302 rodded 351, is a flat top, which is low compression with oc heads.