Hello all. I'm looking at a 502 and the casting number reads: 19165956.

I cannot find any info whatsoever on his casting number.

I've searched for quite awhile and I have exhausted all the online info.

My concern is that it is a generation six roller cam block.

Is it a fact that only gen six blocks have the aluminum six bolt timing cover?

Thanks, rob

Yes, if it's a Gen VI block, it will have a 6 bolt timing cover. They are the only ones with that cover. If it's a Gen VI, it will also have a factory roller cam.
Eddie

Vintage,

That is GM's latest ( and possibly last) iteration of the BBC block. The 19165956 casting number is not yet listed, however the part number is 19170540. Very nice piece.

Description
• Revised 502 Gen VI Bare Block
• New casting incorporating the best designs of Mark IV and Gen VI
• Production type cast iron 4 bolt main block
• Improved main bearing bulkheads - Bowtie block style bulkhead
• Clearanced for bigger strokes - up to 4.25"
• 4.466" finished bore
• 4.500" max bore
• Siamese bores
• Fuel pump provision has been added to this block
• Revised water jackets for Mark IV or Gen VI heads
• Revised oiling to allow for bigger cam bearings / cam lift
• Bolt boss added to valley for use with dummy oil pump drive (Like 8.1L)
• Additional clearance added in front cover are for roller timing sets
• Additional oil pressure port added to front of block
• Racing style oil filter cast feature with added oil pressure port
• Two bosses added for manual transmission clutch pivot (A, B, F, X car boss & '63- 82' Corvette boss)
• Additional material added around lifter bores
• 9.800" Deck Height
• Bare weight 269 Lbs.


Bob

Man! Thank you so much bob. I was going nuts trying to find that info.

I'm driving to pick it up tomorrow and I don't like driving 10 hours without having my ducks in a row.