Quote:
Originally Posted by SSDiv6
Pete Kost drives Bill's former Oldsmobile and it is still powered by a 403.
It is one of the most successful 403 powered Oldsmobile's in Stock eliminator wining many races and setting many records
All 403 blocks are windowed; there were no solid web 403 Oldsmobile blocks.
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According to the late Joe Mondello there were about 2500 solid main web 403 engines built. Most of them were in 1977 Buick station wagons. Block casting number is 557265-4A or 554990-4A. My son has one in his Cutlass.