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RETIRED
Join Date: Jul 1999
Location: BOULDER Colorado
Posts: 39,412
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According to Anderson's book, it is a 67/68 911 rally engine with 46 IDA webers. Further noted...same as a 901/02 which IS a "S" motor.....
The 901/30 shows 150 hp, while the S shows 160....
Looks like the difference is smaller valve and port sizes....
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