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Rocket Scientist
 
Join Date: Jun 2008
Location: Detroit
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964 and 964 C2 Turbo Cam Specs

It seems like a few people are running them, but the 964 turbo cam lifts are a mystery. Does anyone have accurate knowledge of the lift on the 964 Turbo cams? I suspect that it is not very high, considering that it was still a KE-Jetronic engine.

Old 11-16-2014, 08:55 PM
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Thought I saw the 3.6 turbo cam specs in Anderson's book. You could check there.
My impression was it was more like the 964 cams than the 3.3 cams; more lift and a small amount of overlap.
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Paul B.
'91 964 Turbo
Port matched, SC cams, K27/K29 turbo, Roush Performance custom headers w/Tial MV-S dual wastegates, Rarlyl8 muffler, LWFW, GT2 clutch & PP, BL wur, factory RS shifter, RS mounts, FVD timing mod, Big Reds, - 210 lb
Old 11-17-2014, 05:04 AM
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My impression was that for the 964 turbo (3.3) it had quite the same spec as 930. just an upgradet intercooler and CIS

Specifications - 3.3 litre Turbo engine
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Trond R.
1979 930: Garret GT35r turbo, EFI, carerra intake, Link EMS, custom GT2 cams, 98mm JE P/C, 964 crank (stroker), custom valves & ported (XtremeCylinderHeads) etc..etc..
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Old 11-17-2014, 05:32 AM
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He has the timing in there, but not the lift. I also have found a few errors. For instance, he lists the exhaust ports as 36 for the 3.0L 930's, and 34 for the 3.3L 930's. in fact, they are both 36mm exhaust ports.

Quote:
Thought I saw the 3.6 turbo cam specs in Anderson's book. You could check there.

My impression was it was more like the 964 cams than the 3.3 cams; more lift and a small amount of overlap.
Old 11-17-2014, 09:36 AM
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I think you are right on that. I was looking for the 3.6L 964 C2 turbo.
Quote:
My impression was that for the 964 turbo (3.3) it had quite the same spec as 930. just an upgradet intercooler and CIS



Specifications - 3.3 litre Turbo engine
Old 11-17-2014, 09:37 AM
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The extra power in the 3.3L C2T came from the intercooler, K27, and 0.9bar boost. Cams remained unchanged. The 3.6L C2T had more changes. I want to say they used SC special wishes grind but will have to look it up to verify. They did not use the same cams as the N/A 964 of the same period.

Old 11-17-2014, 10:55 AM
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