Alfa Romeo Bulletin Board & Forums - View Single Post - "S" cams in std motor?
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post #2 of (permalink) Old 05-04-2019, 06:59 PM
Michael Smith
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Join Date: Sep 2007
Location: Calgary,Alberta,Canada
Posts: 2,685
S cams open up the top end at the expense of low end torque, as you might expect. The S cams allow higher compression by doing this.

In my not so humble opinion the S version was a paper tiger to impress journalists. The actual performance difference between S and L tunes was really effected by a 10% shorter final drive in the transmission.

If your son enjoys high rpm driving then by all means fit the S cams. The compression ratio is only relevant at below 4,000 rpm where the L needs the lower compression to avoid knocking.

1991 Alfa Romeo 164L 5 spd
White on grey leather 230K km, owned from new
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