Originally Posted by rmbuilder (Post 3589460)

The two parts #’s referenced would be the set #’s 5288 (1988 Newer) & 5374 (1987 older). There were machining differences in the two parts, however they have recently revised the manufacture consolidated them into the one 5374 part #. That being said there are significant material, and dimensional contrasts separating the street performance/Race/Hi-RPM lifters. We do not recommend the street/performance lifters in any marine application largely due to the use of a .700” roller wheel vs. .750” for the Race/Hi-RPM versions. The new .903” Hi RPM versions will support a .810” wheel.

The race version are also .300” tall and a direct drop in on any MK IV, Gen V/VI,Dart or Merlin block.

The pricing listed in your post would seem a bit high.

Regards,
Bob

Originally Posted by Sonic30ss (Post 4541179)

Dunno? What?
PBM made by Morel

Originally Posted by Sonic30ss (Post 4541179)

Dunno? What?
PBM made by Morel

Originally Posted by F-2 Speedy (Post 4541197)

what cam is in there, that lobe profile looks to be very aggressive , or maybe its the picture

Originally Posted by midwest272 (Post 4541204)

Looks like that dowel pin or ??? laying in the valley got lodged under the link bar and snapped the rivet off

Originally Posted by midwest272 (Post 4541204)

Looks like that dowel pin or ??? laying in the valley got lodged under the link bar and snapped the rivet off