ZR-1 Net Registry Forums - View Single Post

A26B · 01-04-2012

That's not particulary surprising, knowing the story behind the change. It was essentially a change to reduce machining and therefore cost. There was probably an inventory of engines already at BG when the change was implemented at Mercury.

01-04-2012	#4
A26B Join Date: Dec 2003 Location: Arcadia, OK Posts: 3,402	Re: 90 Heads and IH's on our 91 That's not particulary surprising, knowing the story behind the change. It was essentially a change to reduce machining and therefore cost. There was probably an inventory of engines already at BG when the change was implemented at Mercury. __________________ Jerry Downey JERRYS LT5 GASKETS & PARTS http://www.jerrysgaskets.com 1994 *ZR-1*, Black/Black, Lingenfelter Aerobody, 416cu in, 3.91 gears, coil-over susp, Brembo brakes, etc. 2016 Black-Red, 3LT-Z51 Auto 8-speed.