ksquared 13 Report post Posted September 2, 2012 Anybody remember what the piston to bore clearance is supposed to be with the old TRW forged pistons? These pistons are from the early 80's. I don't have any paperwork with them. Quote Share this post Link to post Share on other sites
LSG 15 Report post Posted September 3, 2012 KS, what part number pistons are they and what bore size ? LSG Quote Share this post Link to post Share on other sites
ksquared 13 Report post Posted September 3, 2012 There is a number inside the piston which is 211-98. The pistons are 4.155 inches. That's all the info I have other than they were bought back in the early 80's or late 70's. Quote Share this post Link to post Share on other sites
ksquared 13 Report post Posted September 3, 2012 Right now I'm looking at .006 to .007 clearance which is a lot for the street. I'm going to have the skirt area heavily coated by PolyDyn. Should take up a thou or two. Quote Share this post Link to post Share on other sites