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macgyver · 04-27-1999, 09:03 PM

There is definetly a distinct difference in the entire lifter assembly. The vavle covers on the HI-POs were a bit smaller. They won't give enough clearance if put on a regular 289.

04-27-1999, 09:03 PM	#6
macgyver Registered Member Join Date: Feb 1999 Location: Boston, MA, USA Posts: 17	There is definetly a distinct difference in the entire lifter assembly. The vavle covers on the HI-POs were a bit smaller. They won't give enough clearance if put on a regular 289.