01-27-2011, 10:16 AM
From my experiences stock heads with stock size valves are well clearance with the stock pistons. Only valve clearance problems would be with E5 & E6 heads on a '85-86 block. Theses had smaller chambers and flattop pistons.
It would also be wise to upgrade the valve springs and timing chain while your in the motor. Also remember these #'s were calculated using 10:1 compression and 4.030 bore.
It would also be wise to upgrade the valve springs and timing chain while your in the motor. Also remember these #'s were calculated using 10:1 compression and 4.030 bore.
'72 TBA...