Hi guy's,
Anyone out there familliar with the two XX's scratch welded onto the back of my block, it also has a #17 on the opposite side of the XX's.
The engine/block cast is C1AE 6015G, but I'm pretty sure it's not a 61 T-bird/Galaxy engine. It also has the extra (2) threaded "Blind" bolt hole just above the passenger side
oil pan, a "28 DIF" stamp driver side block, (which I understand to be a Dearborn 428) along with a single "S" stamp on the underside of the side
oil filter adapter see pic.
Hope the pictures are of some interest, The engine is sitting in my Beautiful but totalled 56 f100. When I bought the truck 2 (+) years ago, it was advertised with a 428 Cobra engine, & the seller was a reputable restorer in Orange County Ca. But that don't mean a darn thing anymore, I know...

oiler

block

head

manifold

Anyway, thanks for any help from all you guy's & gals too.
My user picter is my new 56 f100