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3.0 CIS 964-grind cam only...worth it?
Gents, my 83 is stock where it counts. I'm having some things cleaned up, and the cam guy is pushing the 964 grind. I've read many threads on the topic. But is there any benefit to going that way without other modifications e.g., pistons, valve springs... ? He suggests an adjustment to timing, as described in this forum in multiple threads, will compensate for any loss of low-rpm torque. Is it worth it, or should I go with the standard sc grind?
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10-04-2012, 10:59 PM
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Registered
Join Date: Jan 2003
Location: Langley,B.C.
Posts: 11,991
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Do your cams need to be reground? If so, the 964 profile is a no brainer as it costs the same as a stock regrind.... They do add some performance in an otherwise stock motor, and if the motor is apart and the cams need to be ground......
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Turn3 Autosport- Full Service and Race Prep www.turn3autosport.com 997 S 4.0, Cayman S 3.8, Cayenne Turbo, Macan Turbo, 69 911, Mini R53 JCW , RADICAL SR3 |
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10-04-2012, 11:19 PM
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Thanks, Jeff. Yes, they need a little work.
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10-06-2012, 01:03 PM
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grateful user
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Yes, its worth it. Esp. if you mod. your exhaust and timing.
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fully disassembled, blasted, customized and restored 75 targa with factory hard top, 993 style turbo ft fenders, steel flares, C2 bumpers and rockers, 82 3.0 sc 9.5/1 engine with PMS flywheel, 964 cams, flowed heads, ssi's short geared 915 w/lsd, polybronze, bilstein,working lambda, modified and highly tuned cis, tensioners, pop valve, backdated exhaust and heater, 2300 lbs. no bolt left untouched. 1970 911E. Nice car but needs a re-do. |
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10-07-2012, 06:15 AM
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how does the combination of small port heads and narrow runners work with the 964 cams ?
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80SC (ex California) |
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10-07-2012, 10:27 AM
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P911
75 Porsche 911
bike
1970 porsche E
911SC
