FOUND A GOOD SOURCE FOR SUFFIX
http://www.s10extremist.org/tech_art...8_block_id.htm
PLA SUFFIX CODE NOT FOUND
ENGINE CAST# 14093638
88-94 CHEVY 350 5.7L
ONE PIECE REAR MAIN SEAL
TAPPET OR ROLLER CAM (DEPENDING ON APPLICATION)
CAST YEAR DATE 1995
ANY HELP WITH FINDING OUT WHAT PLA STANDS FOR WOULD BE APPRECIATED
THANKS