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gmhatr · 08-19-2004, 12:49 AM

The HO motor has pistons with valve reliefs and the cam has the same firing order as the 351. The non HO has the standard 302 firing order and has flat top pistons. The 88 motor should be a roller motor, HO or not.

08-19-2004, 12:49 AM	#22
gmhatr Registered Member Join Date: May 2004 Location: Mattoon IL. Posts: 91	The HO motor has pistons with valve reliefs and the cam has the same firing order as the 351. The non HO has the standard 302 firing order and has flat top pistons. The 88 motor should be a roller motor, HO or not.