5.0Flareside
GingaNinja
and it could make even more if they used much bigger heads.. they currently have some small 205 heads with 2.02 intake valves.. SAME SIZE VALVE AS MINE!!! on 150 cubic inches more!!
if they build a 240cc or so head, with a 2.10 intake valve and properly size exhaust valve, would easily make 650/650 and be able to rev more than just 5600 rpms..
the crate engine
http://www.fordracingparts.com/parts/part_details.asp?PartKeyField=23197
the heads
http://www.fordracingparts.com/parts/part_details.asp?PartKeyField=9203
if they build a 240cc or so head, with a 2.10 intake valve and properly size exhaust valve, would easily make 650/650 and be able to rev more than just 5600 rpms..
the crate engine
http://www.fordracingparts.com/parts/part_details.asp?PartKeyField=23197
the heads
http://www.fordracingparts.com/parts/part_details.asp?PartKeyField=9203