Trying to figure out what these P/Ns mean...

[Tricky D]

On the heads I pulled off a 2.4 with 2.7 P&Cs, the P/N is 901.104.307.1R. The valves are 46/40 I/E, and the ports are 32/28 I/E (E is approx due to gunk in port).

I tried running the P/N through our host's website with no success.

Also, I'm trying to figure out which camshaft is P/N 901.105.110.1R. Again, no success through our host's website.

Any and all assistance is greatly appreciated.

[Tricky D]

Oops, forgot to mention the date stamps on the heads are 3-73 or 4-73.

[Early_S_Man]

Probably 'E' heads ... you can't be sure with just the casting number!

That is the right side 'E' cam.

[Yellowbird RS]

Ok according the pet your camshaft is 65-68 911Solex model:901/01 up to Eng#903069, right side #901.105.110.01

but the head # don't match

[Tricky D]

Thanks!