Thanks, I'll update the info later tonight

 

This thread has the spec for effective duration for the HKS cams and maybe some other info you dont have.

https://www.evolutionm.net/forums/ev...no-replys.html

 

That's the thread that gave me the idea to create a new one, some of the specs in that thread are outdated or not accurate. Thanks for the reference though I would like to get specs for cams that aren't readily published (BR, STM, etc).

 

Im pretty sure the HKS effective duration info in that thread is correct and you dont have that info in this thread.

Also, I doubt BR and the others will publish their specs.

 

I know it's a long shot to get that info, but I know some people have had them on a Cam Doctor. Updated above with the latest info.

 

Are the specs for the kelford 272s (evo VIII) the specs for the newer version or the older style kelfords. Someboyd was telling me that the older kelfords are closer in duration to the new design kelford 280s than the new kelford 272s. Can anybody verifiy this? thanks!

 

Hello, i've been doing some research on cams and noticed your numbers for duration on the FP4R and FP5R cams dont quite line up.

http://store.forcedperformance.net/m.../145FP4RV2.pdf

the FP4R say they are 223in and 228ex for 0.050" lift (1.27mm)
With that in mind, the duration @ 1mm should be larger. By how much? i dont know.

 

about 2-3 degrees.

 

This is true, I should probably note that the advertised duration for the FP cams are at .050" of lift.

 

Very good thread I've had Cosworth m2, hks 272 and GSC S2.

All great cams.

 

Thanks! I've run a bunch of different cams/turbo setups as well. HKS 264/264, GSC 264/272, GSC S2, GSC S3

 

Good thread...

I use a Cosworth M2 and are excellent

Regards.

 

it would be nice to know valve opening and closing points too as this affects performance and compression

 

According to GregGSC on a different post (https://www.evolutionm.net/forums/gs...-question.html), can you add/verify the GSC 272/272 (non-S) cams for the EVO 8 to your list? In the same thread, Greg does state that the centerlines varied for that model though.

In any event, awesome thread.

EDIT: Forgot to post the spec:

GSC 272 *
10.6 I/10.0 E
105°I/113°E

 

This is a good thread.