Just bought a 70 911T with maybe S Motor? Help decoding.

[carguy2]

We (grautogallery.com) just bought a very rough 1970 911T. We think it may have an "S" motor in it and from what we found it does but I would hate to claim it does when we could be wrong. Any help would be appreciated. Thanks, Jeffrey

Chassis # 9111100670

Motor# 4080381

[Menmojo]

Look to the right side of the fan housing. There is a vertical flat portion of the casting down towards the block. It will have a seven digit number stamped there with 'stars' on either side of the number. It will start with the number 61xxxxx if it is a T engine. 63xxxxx if an S engine.
I would also post on the Early 911S registry.
The guys on that board can give you more details.

[carguy2]

The motor number that is stamped on the car is in my original post. 4080381. I know that it is not the right motor too the car and I know the car is not an "S" car but wondering if the motor is out of an "S".

[303462]

according to the Redbook it is a 68 911S negine. Aluminum case? Earliest 68 S motor is 4080001 through 4081549 type(901/07)

[76_rookie]

score!!! Hopefully its in good condition...

[djpateman]

4080381 is an aluminum case S engine number. I'd be interested in the # stamped on the case below the type # 901/02; it will be in the 10000 range. Now the case may be from an S, but to claim an S engine would require that the rest of the engine is S type.
Third number on engine case