Quote:

ok,thanks for the reply
engine casting date appears to be 24 4 90
casting number - 53008921360
if this is a magnum block you would need pushrod oiling plus don't the magnum motors use a pedestal type rocker similar to a chev ?
looking down where the oil feed port in the head is you can see the head bolt,ptting a rod down there only goes about 1 1/2"

Tex



90 would be a pre-mag roller cam block. it would be drilled for rocker shaft oiling.

the stock cam would also be drilled for rocker shaft oiling.

if aftermarket roller cam...may or may not be drilled

90 would also be oiling thru the block/heads LA style and thru hollow PRs with oil thru roller lifters. (gearing up for the magnum change over)

does it have a roller cam with roller lifters?

sounds like it is pointing toward the head gaskets, they could be for a magnum and blocking the passage to the head.