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Registered
Join Date: Aug 2001
Location: UK
Posts: 219
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Who has the highest powered 2.7 CIS?
Mine is a stock '74 2.7S making 175 hp. I understand that higher compression and a 964 cam will push the power up, without removing the CIS.
How much hp does your 2.7 make, and what did you do to it? I'm only referring to CIS machines. Thanks! |
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05-14-2002, 02:42 AM
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Registered
Join Date: May 2002
Location: Indiana
Posts: 4,553
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I have a stock(mostly) 1975 2.7
I do have Bursch headers and a Bursch sport exhaust.Also disconnected the A/C and smog pump. I have never had it on a dyno but backdating to the pre-'75 exhaust and removing the "unnesscaries"(SP?) should put me right around 175HP. All I know is I want more!!! 
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Keeper of the Titanium Monkey 1975 911S (sold) 1973 911 w/3.2 (sold) 1983 911SC targa (sold) Looking for a 987.2 or 981 Cayman |
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05-14-2002, 03:42 AM
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Registered
Join Date: Mar 1999
Location: Vancouver,Wa.
Posts: 4,457
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>I'm only referring to CIS machines.<
Boo hoo 
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JPIII Early Boxster |
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05-14-2002, 09:22 AM
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my 74 cis motor has never been on a dyno but i would conservitavely guess it is over 200 hp.
i have 964 cams, larger intake off a 78 sc, oh and 2.9 p's and c's.
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Jim R Gruppe Member once upon a time when you could run generators in Cambria to fix the cars and hit 150+ mph on the fun run "Alles ist gut" 2011 997 GTS "Orange Pepper Wagon" 2009 Cayenne GTS |
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05-14-2002, 09:24 AM
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drag racing the short bus
Join Date: May 2002
Location: Location, Location...
Posts: 21,983
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Jim:
Jim:
I'm looking to possibly get more hp out of my 2.7, and have been debating whether or not to stick with my motor or upgrade to possibly a 3.0. I like the work you've done to yours (2.7 to 2.9 and all), and would like to know what you spent to get that work done, if you don't mind. Also, where did you get this done? Thanks |
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05-15-2002, 11:36 PM
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74 Porsche 911s targa 2.9 
