Full floating wrist pins

eddie c · 02-12-2012, 07:04 PM

Wanting to build a street motor for a 1996 350 Chevy LT1 motor. What I
would like to know is what are your thoughts on making the wrist pins
full floating. I have always thought that by doing so that you reduce friction or drag on a rotating assembly. I know that alot of high performance factory motors use full floating set ups. Anyway has anyone
ever tested a motor before and after a full floating set up has been
installed and what results has it shown. I also would like to know your thoughts on which is more reliable full floating or single floating. THANKS ed

Alan Roehrich · 02-12-2012, 07:15 PM

Full floating wrist pins are for ease of maintenance and disassembly, there is no performance gain.

With the correct retainers, full floating wrist pins are reliable. I rarely build an engine without full floating wrist pins, since I almost always use an aftermarket connecting rod and a premium piston. I prefer round wire locks, but spirolocks are fine.

02-12-2012, 07:04 PM	#1
eddie c Junior Member Join Date: Jul 2011 Location: Southeastern Pa. Posts: 53 Likes: 0 Liked 0 Times in 0 Posts	Full floating wrist pins Wanting to build a street motor for a 1996 350 Chevy LT1 motor. What I would like to know is what are your thoughts on making the wrist pins full floating. I have always thought that by doing so that you reduce friction or drag on a rotating assembly. I know that alot of high performance factory motors use full floating set ups. Anyway has anyone ever tested a motor before and after a full floating set up has been installed and what results has it shown. I also would like to know your thoughts on which is more reliable full floating or single floating. THANKS ed

02-12-2012, 07:15 PM	#2
Alan Roehrich VIP Member Join Date: May 2006 Location: Murfreesboro TN Posts: 4,915 Likes: 996 Liked 1,043 Times in 274 Posts	Re: Full floating wrist pins Full floating wrist pins are for ease of maintenance and disassembly, there is no performance gain. With the correct retainers, full floating wrist pins are reliable. I rarely build an engine without full floating wrist pins, since I almost always use an aftermarket connecting rod and a premium piston. I prefer round wire locks, but spirolocks are fine. __________________ Alan Roehrich 212A G/S