ZR-1 Net Registry Forums - View Single Post - How much boring inside the cylinder liners?

A26B · 02-11-2013

For the LT5 open deck design, the original cylinder sleeves are made from aluminum and cannot be bored. The i.d. of the sleeves is coated with Nikasil, a very hard, durable material which requires a diamond hone to finish.

Increase of bore diameter is accomplished by replacing the original cylinder sleeve with an aftermarket design manufactured from high quality cast iron. Without machining the upper crankcase (block) to accept large o.d. sleeves, the upper limit of aftermarket cylinder sleeve bore diameter is normally considered to be 4.000" (0.100" larger than the stock bore of 3.900")

LT5 Open Deck Cylinder Sleeve

02-11-2013	#2
A26B Join Date: Dec 2003 Location: Arcadia,OK Posts: 3,376	Re: How much boring inside the cylinder liners? For the LT5 open deck design, the original cylinder sleeves are made from aluminum and cannot be bored. The i.d. of the sleeves is coated with Nikasil, a very hard, durable material which requires a diamond hone to finish. Increase of bore diameter is accomplished by replacing the original cylinder sleeve with an aftermarket design manufactured from high quality cast iron. Without machining the upper crankcase (block) to accept large o.d. sleeves, the upper limit of aftermarket cylinder sleeve bore diameter is normally considered to be 4.000" (0.100" larger than the stock bore of 3.900") LT5 Open Deck Cylinder Sleeve __________________ 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.