So I have cone across 2 engines/crankcase and I've been on different sites entering the engine numbers trying to find what they are, can anyone plz help me out.

I know this is a S&S when google searched it, i get 1938 flathead? I don't think that's right Number is *YC1417*
next

Ive searched came up with a twin cam there are 2 different numbers *GPW4326124* & 0390469735 Im just trying to figure out a year and what type they are!!

 

The top one..

CRANKCASE,ASM,4",SA,PKG,CPS MACH,84-91BT

https://www.sscycle.com/tech-info/engine-serial-lookup

So it's an SnS set of cases setup for a 4 inch bore deck. Rest of the parts could be anything.. It's likely either a 107ci or 113 ci build.

The bottom one is a 2000 to 2006 (except 2006 dyna) bagger or dyna twincam motor. Someone else should be able to decode the motor.

 

I should add, the top one is an EVO SnS motor.