these are 882 castings 76cc chambers 2.02 intake 1.6 exhaust the rocker studs are pinned, they are ported/polished. motor they were on was a late 80,s bracket car that ran low 7,s high 6,s on motor in the 1/8th. i would use them but the chambers are too big for the pistons i have in my motor so the compression ratio would be lower than i want.
askin 150 939-0754 ask for steve