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-   -   70' high compression 2.5 liter cam question (http://forums.pelicanparts.com/911-engine-rebuilding-forum/517616-70-high-compression-2-5-liter-cam-question.html)

Emery G. 12-20-2009 05:56 PM

70' high compression 2.5 liter cam question
 
I'm in the middle of building a 70 cased 2.5 liter 10.5 to 1 motor for my 914-6 build. my motor is coming along slowly and i've been collecting parts as i go. My question is this the cams i have (they came with the motor) are Elgin cams the numbers on the cams say that they are 306/288
306 I .496 288 E .463 Lobe center 102 Lift at lap 5.0 mm.
I am concerned if these cams will fit my build. i would like a good all around motor. I would rather have power in the middle of the power band than all at the top.
Does anybody out there know if these will work for me or should invest in somthing different. The motor will be a long stroke as well as twin plugged.
Thanks for any and all help this is sort of a dark corner of knowledge for me, but i want to know more

stownsen914 12-20-2009 06:03 PM

I have a 2.7L track car with Elgin 310-296 cams, and they're pretty racy. Really nobody home until about 5500, and it revs freely to 8000. The 306-288 should be a little tamer, but then again your engine is a little smaller displacement too. It you are looking for an engine with a meaty mid-range, you might consider something a little tamer.

Scott

Emery G. 12-20-2009 06:28 PM

what would you suggest as a little tamer?

Emery G. 12-20-2009 06:29 PM

and by the way i'm originaly from somers westchester!

stownsen914 12-21-2009 01:30 AM

Quote:

Originally Posted by Emery G. (Post 5081411)
and by the way i'm originaly from somers westchester!


Ahh, very good!

As for cams, I hear people talk about a "mod S" cam that sounds like it might suit your scenario. I believe Elgin, Dougherty, and other grinders would have mod S grinds. Others on the board will probably know more specifics than I, or just give Elgin or Dougherty (I think he's on Pelican as camgrinder or similar) a call.

Scott

Emery G. 12-21-2009 05:14 AM

perfect thanks for the info


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