Topic: 1980 turbo with yb stamped on engine?

[ronz]

Can anyone help with a casting samp of yb on the passenger side front of block. I want to discover what motor this is?

[Tbird]

http://www.78ta.com/enginecodes.htm

1972
Pontiac 400:  WK (manual), YS, YX, ZS, ZX (automatic)
Pontiac 455:  WD, WM (manual), YB, YE (automatic)

1980
Pontiac 301:  XC, XM, XN, YN
Pontiac 301 Turbo: YL
Chevy 305:  CEL, CEM

Is the engine a turbo in your car? According to this YB is a "72" 455, I'd like to see THAT with turbo. 

[ronz]

No turbo. It runs but rough, leaks fluid out exhaust. Any suggestions for motor work etc. I am new to this but I am excited that it is a 455. Wow!!!