Jeff88coupe
04-21-2010, 09:41 PM
I have a set of used Ross 4.030" flat top pistons for a 347 with a 5.4" rod with a 3.4" stroke crank. These have duel intake valve reliefs for inline and TFS T/W heads. C/R will be about 10.8:1 with a 58cc head. I ran these with 93 pump gas and E85. One piston is slightly hurt by a spark plug tip that bounced around...but can be cleaned up easy with some emory cloth. I would have put these pistons right back in my motor..but I had to have the block bored another .010" to clean up the hurt cylinder wall. I also think you can buy a single new piston from Ross if you want.Here is a pic of the hurt piston.
http://farm3.static.flickr.com/2678/4362759265_7520b6af34.jpg
Used pistons with pins/sprial locks/oil support ring $200 obo
http://farm3.static.flickr.com/2678/4362759265_7520b6af34.jpg
Used pistons with pins/sprial locks/oil support ring $200 obo