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Join Date: Jun 2003
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GT2 Evo Cams in the classifieds

Greetings All.

For those that are looking, I have a set of cams listed in the classifieds

https://forums.pelicanparts.com/porsche-911-used-parts-sale-wanted/994022-fs-web-cam-gt2-evo-cams.html
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Aaron. F.S. 1965 Solex engine w carbs/cleaner
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Old 04-19-2018, 08:49 AM
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So tempting
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'86 930 Guards Red - EFI MS3Pro, 80lb inj, 3.4, GT35R, Tial 46, Bosch 044, B&B Headers, 3.2 carrera manifold, Turbokraft Full bay IC
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Old 04-19-2018, 09:22 AM
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Missed these ones on the for sale forum, thanks, I'll take them
(left a post in the proper section)
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1987 930 Road trip car (1/2 owned)
1982 DP935 future beast
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Old 04-19-2018, 12:36 PM
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Sale Pending.
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Aaron. F.S. 1965 Solex engine w carbs/cleaner
Burnham Performance
1071 Avenida Acaso suite D Camarillo, Ca.805-240-6931
https://www.instagram.com/burnhamperformance/
Old 04-19-2018, 01:18 PM
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What do these offer over the modified SC style cams?
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Harold
'79 930/DP935
'68 VW 3.3 Turbo Crewcab
Old 04-19-2018, 01:27 PM
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PM'd you Aaron
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Cory - turbo'd '87 C3.2 Guards/Blk, 3.4, 7.5:1 CR P & C's, soon to be 993SS cams and GSXR 750 ITB's fed by 964 intake, Borg-Warner S366 turbo @ 1.4 bar, Treadstone full bay IC, TiAL F46 WG, HKS 1 1/2" BOV, twin 044 pumps, MegaSquirt 2 (v3.57 board) w/EDIS, Tramont wheels (285's rr, 225's frt), Big Reds frt, 993 rr., tower brace, MOMO wheel
Old 04-19-2018, 01:29 PM
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Quote:
Originally Posted by gumba View Post
What do these offer over the modified SC style cams?
Hi Harold, Are you referring to regular SC cams in a turbo?

GT2 grind can support quite a bit of HP.
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Aaron. F.S. 1965 Solex engine w carbs/cleaner
Burnham Performance
1071 Avenida Acaso suite D Camarillo, Ca.805-240-6931
https://www.instagram.com/burnhamperformance/
Old 04-19-2018, 04:08 PM
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I'm currently using Elgin Sport C-2 turbo grind.
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Harold
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Old 04-19-2018, 04:25 PM
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Thanks Aaron, build should start soon.

Harold, these will go in my DP935...
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Many projects on the way...
1987 930 Road trip car (1/2 owned)
1982 DP935 future beast
1969 911T rust bucket
1966 911 Buffum college car (1/2 owned)
Old 04-19-2018, 11:26 PM
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What’s the rest of the built, and estimated h.p.?
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Harold
'79 930/DP935
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Old 04-20-2018, 05:17 AM
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I have 2 motors with evo gt2 cams. One is a 3.4 stiil pankake manifold by Dave Jarvis just rebuilt with the addition of GT2 cams.
At 11 psi @ the wheels 400 torque & 374 HP on CS Motorsports dyno they say add 20% for engine HP. so at engine it is 480 torque & 445 HP. So after break in and further tuning @ safe 16 psi most likely, lots more.

Another 0ne with GT2 evo cams a 3.5 ITB by Norwood on their engine dyno 763 HP no idea of PSI. Same motor On CS motorsport with improved fuel delivery and waste gate changes the wheel dyno results are 498 wheel add 20 % for engine HP so almost 600 @ 1 bar. I spoke to Norwood about safe boost levels with this motor and he said 30PSI for shorter runs but 1.4 with race gas would be fine. After over 7K miles, some of fairly spirited driving some up to 30 PSI, the leak down numbers are 3% and 4% all cylinders.

I wanted to buy these cams for another 930 to replace the old SC grind that were in it ( from 1983 ) by Web cams, when they were first advertised but seller was not sure at the time if they had the machine work for the the turbo sump.
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Anthony @ Voitureltd Bayside WI.

Last edited by voitureltd; 04-20-2018 at 08:26 AM..
Old 04-20-2018, 08:14 AM
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I get back to my original question, what do these offer over the sc style cams. I thought the sc cams gave better performance at the bottom end before boost. Aaron states that the GT2 grind supports more h.p. which I assume would be at higher rpm. On the 3.5, torque and h.p. seem to top out around 5,500 rpm. The 3.3 and 3.5 are both cis street motors putting our around 380 crank h.p. Both motors use a gravity drain line to a custom sump plate instead of the turbo pump.
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Harold
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Old 04-20-2018, 08:26 AM
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Yes higher RPM. The mild street build 79 930 I have ( 3.3 with CIS ) 340 crank HP, that I wanted these EVO cams for has lots of mid rang grunt but not so much in the higher RPMs which is why I wanted to change them out as I seldom use it in traffic where, especially with a 4spd, you need more midrange. The other dyno info I posted is for what they can produce for pretty full race motors with the HP peaking well above 5500 RPM. The seller mention they would support lots of HP, they do, but at a much higher RPM than SC cams.
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Anthony @ Voitureltd Bayside WI.

Last edited by voitureltd; 04-20-2018 at 09:06 AM..
Old 04-20-2018, 08:30 AM
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