I took this part number off of one of my pistons #1231898. Does anyone out there know if this number is for a high compression piston?
My parts book shows 1394559 as the high-comp std diameter piston. Collector's Auto Supply shows to have 160 of them, $46 ea. 1-888-772-7848
Flatlander Racing lists the cast TRW hi-comp. 340P pistons for $239 for the set. Here is the page listing.