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Registered
Join Date: Jun 2008
Location: So. Calif.
Posts: 439
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How do you ID a 964 cam?
I was thinking of placing 964 cams in an 81-82 3.0SC engine with CIS. Is it true I can just place them in and not change much else in the process. Is their much more hp than worth bothering with? If you have a photo can you show a 964 cam next to a regular 3.0 cam? Thanks.
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09-29-2008, 08:01 PM
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Registered
Join Date: Jul 2001
Location: Portland Oregon
Posts: 7,007
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Hi,
JMHO, but I wouldn't bother with a cam change unless its done with a good performance exhaust such as SSI's and a sport muffler. ID's cams by appearance is skin to alchemy,....  Given the popularity of re-grinding factory ones, you cannot tell by simply looking at them. 964 cams do have the PS drive on the right side, but the ONLY way to make a positive ID such things is by having them checked with a Cam Doctor
__________________
Steve Weiner Rennsport Systems Portland Oregon (503) 244-0990 porsche@rennsportsystems.com www.rennsportsystems.com |
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09-29-2008, 08:14 PM
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Registered
Join Date: Jul 2006
Location: S. Florida
Posts: 7,249
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You can use calipers and measure the distance from the base circle to the nose of an intake cam lobe.
964 cams have more lift and a little more duration than SC cams and the difference in that dimension is quite noticeable. If your cams were welded and reground by Webcam, grind #40 is their 964 profile. |
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09-30-2008, 04:21 PM
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