Bbc 454 361959

[71chevyburban]

I have a 454 with casted numbers 361959, GM10T, K12 78. The intake is stamped GM 1, 340218. Head stamped 338781, GM10T, L8 76. Other head stamped 338781, GM11T, L7 76. IM WONDERING IF THESE ARE ALL COMPATABLE.
This engine has been in the family for years now, through a few different hands but the same problem persists. It overheats. Ive torn in down and noticed a few little things but im not and expert so i dont really know if what im looking at is right or wrong.

 

[71chevyburban]

Nothing? Nobody?

 

[hurst01]

Sorry for the delay, I don't get on here as much as I used too. I can't seem to find that block casting number. Double-check to see if you might have missed a digit. As far as compatibility, they mostly are interchangeable with most of the difference being the later GEN iV-Gen VI style of rocker arm stud and whether they are adjustable or not.