Casting 14015445 comes back as 454 Truck
Milled pad T1014PLB (can't find PLB anywhere)
Drivers side of block near the rear it has this cast
K13
445
Hi-Perf
Pass
Pass side of block
SPI
C251
GM 7 41 G
None of what I have found makes sence being it says truck motor but the Hi-Perf Pass would conflict with that. Also what is the PLB Suffix
Need help on this one
Thank You in advance Todd