Infomaniac

Personal preference only. Nothing else.

I do not care for short rod/stroke ratio combos.

cstraub69@comcast

Side load on the thrust side of the cylinder is greater with the 4.5 stroke in a 10.2 block adn the 6.535" rod. Takes more power to over come the angle.

Chris

wannabe

Short Block is now available.

http://www.paceparts.com/index.asp?P...D&ProdID=73104

Wannabe

Infomaniac

That is pretty expensive for a block and rotating assembly.

Raylar

Thought I would chime in with some facts. The ZZ572 crate engines are a GM High Performance creation. The engine is machined and assembled outside of Detroit by a company called P.A.S. whcih is a joint venture by Rousch Industries and the Unibore Company. The blocks are tall deck Merlin castings. The pistons are forged J&E, the rods and Cranks come from Callies and the heads are by Edelbrock. They are not being built or intended for marine use, and the warranty paperwork from GMHP clearly states not for marine use on either motor. The cams are definitly wrong, as well as the valves, valve seats,oil pans,clearances and other minor parts. You could purchase these engines, remove all the incorrect parts, re-machine and clearence the parts, buy and install all the good marine parts and make a decent 572 marine engine, but why?, you would end up spending more money than just having a good engine builder purpose build you the same thing with all the right parts to start. You can buy the valve covers from GMHP and a can of chevy orange paint and you're in business! Some people just can't seem to get past the Wal-Mart mentality! But like the wiseman knows, "ADVICE, the wiseman don't need it and the fool won't heed it!"
Raylar