Is this the factory engine

[thekevin 51]

68 Raider 12.  The shield says K301 S 47147C which I think is the right one but do they hang off the side of the frame this much from the factory.

[oliver2-44 10,980]

Yes, the overhang is the factory ensign. If look under the frame angle you will see 2 bolts going into the bottom of the oil pan. 
Your grey block is probable a factory short block, or red parts are from the original engine. 

Edited October 28 by oliver2-44

[thekevin 51]

Awesome.  Makes sense why it seems to run so good and doesn't smoke any or make any noises.  I am not sure how long it was sitting before I got it running tonight but it was a long time.

[gwest_ca-(File Mod) 11,752]

K301S-47147C was used in the 1969 and 1970 Raiders

[ri702bill 10,085]

5 hours ago, oliver2-44 said:

Your grey block is probable a factory shift block d red parts are from the original engine. 

 Which most likely means it has a STD bore...

Edited October 28 by ri702bill

[953 nut 62,227]

Here is the pan from below.

[WHX?? 52,948]

9 hours ago, oliver2-44 said:

factory shift block

Never heard it coined like that Jim but yes a service block or short block. Most often used if the original was ventilated or bore scored beyond 30 over. 

[oliver2-44 10,980]

10 hours ago, ri702bill said:

 Which most likely means it has a STD bore.

6 hours ago, WHX?? said:

Never heard it coined like that Jim but yes a service block or short block. Most often used if the original was ventilated or bore scored beyond 30 over. 

Durn auto correct. “Short block”

Edited October 28 by oliver2-44

[Retired Wrencher 6,072]

@thekevin That oil pan Is  said above is from the early 60s. 63 to 65. I believe. I have a 64 engine that I put into a 66 tractor and it has that pan. I use some heavy duty J bolts to hold it down here’s a picture.   Because of the two bolts under the pan.Hope this helps.