Early 911 Cylinder Head Cross Reference

[tom1394racing]

Bruce

Send them to me and I'll add them in.

Thanks

[Flat6pac]

911 104 345 or k2 2.7 73 to 75 150 horse small port

911 104 342 2r k2 air injection thermal reactor with exhaust port inserts 77 style

bruce

[ajwans]

1967 911S head

casting number R901.104.305.02
casting marking K1819C

andy

[bavaria911]

Tom,

I see you updated the 1970-73 911S chart, I seem to have the S heads for the rebuild.



Scott

[Henry Schmidt]

Now that you know what the numbers are, here's where you can buy them.

[bavaria911]

Henry,
Now that's eye candy !

[housand]

In case you are interested, I have 911.104.342.0R (8-73) heads which was not a number on your list I found from 2009. It is on an engine I bought in Europe and shipped over.

[tom1394racing]

Do you know the valve and port sizes?

[lee88]

Old thread to revive I realize, but the casting numbers and other data here were very useful to me for my own research.

So for posterity I'm sharing a photo of a '73-75 2.7L MFI cylinder head (911.104.307.1R) which were found on the RS / MFI Carrera cars. This is from my '74 MFI/Euro Carrera which was an early build (one of the first '74s, delivered Sept-73). Cylinder head casting date is May-73 and these are marked with the Y-metal alloy in top right.

[Henry Schmidt]

Originally Posted by bavaria911

Henry,
Now that's eye candy !

My new store, 911 Vintage Parts has all that and more.

[FP914]

In 1974 the 2.7 was available in 150 HP and 170 HP. Does anyone have the serial number range for for which are 150 HP with CIS and which are 170 HP?