Hawk 525 vs merc 525?
#8
Charter Member # 55
Charter Member
Hawk 525sc's were Merc 420's with B&M 174 blowers.
Merc 525SC's used a lot of the same major parts as the 420's. Same block, heads, and cam. Merc ran lower compression 7.5:1 pistons, more boost and more timing. They used Weiand 177 blowers.
Merc 525SC's used a lot of the same major parts as the 420's. Same block, heads, and cam. Merc ran lower compression 7.5:1 pistons, more boost and more timing. They used Weiand 177 blowers.