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Registered
Join Date: Mar 2002
Location: New Hartford, NY
Posts: 740
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Cam and intake choices
Thinking of different intake systems and cam choices for my engine rebuild. The basics are a 78 3.0L with SSI now. Planning to do 3.2SS with 9.5cr. Was planning to keep the CIS and use 964 or 20/21 cams and possibly down the road going to PMO carbs or EFI, if my budget allows. The sounds of IBT"s is awesome not to mention the performance gains. My questions are if I use either of these cams(or is there another cam choice) would they be sufficient if i switched to carbs or EFI down the road and the pro and cons of using carbs or EFI. Also anyone out there using 964 cams or 20/21 cams with either carbs or EFI. Would appreciate your imput. Thanks jerry
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02-11-2017, 12:46 PM
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964 cams are absolutely fine for PMOs or EFI. I've used them in several builds of both configurations. If going for max performance you do leave a lot on the table but they're fine if planning to upgrade induction at a later date.
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1973 Porsche 911 RS 1981 Porsche 931 Euro-Intercooled-GT 1984 Porsche 911 Euro Carrera widebody 1987 Porsche 924s Rallye Spec Instagram: @soyracer |
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02-11-2017, 02:04 PM
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Location: New Hartford, NY
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Are the gains in HP so modest when converting to carbs or efi when using either of these cams so not worth the extra cost. Anyone have HP figures for comparing the differences
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02-12-2017, 04:07 AM
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Chain fence eating turbo
Join Date: Dec 2008
Location: Austin, TX
Posts: 9,126
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Sent you a PM
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02-12-2017, 05:18 AM
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Join Date: Jul 2001
Location: mt. vernon Wa. USA
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__________________
[B]Current projects: 69-911.5, Previous:73 911X (off to SanFrancisco/racing in Germany).77 911S (NY), 71E (France/Corsica), 66-912 ( France), 1970 914X (Wisconsin) 76 911S roller..off to Florida/Germany RGruppe #669 http://www.x-faktory.com/ |
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02-12-2017, 08:35 AM
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Registered
Join Date: Mar 2002
Location: New Hartford, NY
Posts: 740
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Al, I had sent you an e-mail through your website contact page a few weeks ago to discuss a similar build using your EFI. Not sure if you got it. Be interested in talking with you. Thanks jerry
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02-12-2017, 11:34 AM
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Registered
Join Date: Jul 2001
Location: mt. vernon Wa. USA
Posts: 8,712
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Jerry....you've been pm'd.
regards, al
__________________
[B]Current projects: 69-911.5, Previous:73 911X (off to SanFrancisco/racing in Germany).77 911S (NY), 71E (France/Corsica), 66-912 ( France), 1970 914X (Wisconsin) 76 911S roller..off to Florida/Germany RGruppe #669 http://www.x-faktory.com/ |
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02-12-2017, 12:21 PM
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Registered
Join Date: Mar 2002
Location: New Hartford, NY
Posts: 740
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Al, sent you an email, Thanks Jerry
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02-12-2017, 02:22 PM
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Q-P
Flat Out
