I found this link. http://www.thedirtforum.com/ubb/Archives/Archive-000001/HTML/20040201-20-000279.html

Chevrolet Engines

MAKE AND YEAR
C.I.D. LITRE BORE CYL.
DESCRIPTION
BLOCK CASTING NUMBER
HEAD CASTING NUMBER
CRANK CASTING NUMBER
PART NO.

I have a non-integrated head. The number stamped behind distributor is F111 TLH.

1973-79
250
4.1
3.875
L-6
3 Bolt Starter
Specify if Head is
Integrated or
Non-Integrated.
328575
2775308
366855
348675
377127
473483
93403466
Non-Integr
3895052
3962084
3927763
331184


1975-85
250
4.1
3.875
L-6
3 Bolt Starter
Specify if Head is
1 Brl Integrated,
2 Brl Integrated,
or Non-Integrated.
366855
348675
377127
473483
93403466
Non-Integr
3895052
3962084
3927763
331184




Last edited by JoeChevy; 12/28/2011 11:27 AM.