"S" engines

[Sonny]

OK, I have been given an engine #, but how can I tell if it is an S,E, or T without physically looking at the valves-pistons-cams????
How would one really know that he is buying an "S" engine???

[redducati750]

yea id kind of like to know this also

[lonewolf]

if it has not been tampered with
there is a engine code stamped in the case.
it is down at the base of the fan housing (right side)
beside oil pressure sending unit port.
you might need a flashlight and a rag to wipe the area.
put you finger on the sending unit ,move it over to the left and down a little ,there is the number.
it will have as an example 901/10
basically 3 nummbers / 2 numbers

tell me what your,s says and i,ll tell you what you have

[gumba]

There is a book called "Porsche 911 Red Book 1965-1999 that lists the chassis & engine numbers for the various years. It's by Patrick C. Paternie. For a '73 they are 6330001-6332231 for the coupes &
6339001-6339136 for the targas. These are the engine #'s. A very informative book.

[jrb964]

A real quick unscientific way was the color of the shroud. Early S's were green.

[69 Soft Targa]

The "S" shroud is red.

Did you get an answer?
If not, post the engine # and I'll look it up.

[Wayne 962]

Every engine is a mystery until you break it open...

-Wayne

[Tim Walsh]

Wayne's right about this one.. unless your car is EXTREMELY well documented I think it will be a mystery until you break it open.