rkneeshaw
07-21-2016, 06:18 PM
There is conflicting information on the ZHP cams and whether the duration is 244 or 248. Nobody seems to have actually measured these before.
These specs can be helpful if you were to opt to have your cams reground to some more aggressive specs rather than buying a whole set, and whether your existing cams have enough "meat" to get to the new specs. In my case, I'm interested to know if the intake cam duration really is 248 with 10mm of lift. Because if it for sure is, I only need an exhaust cam to get the specs I want ;) But there is no concrete info on this. Only speculation and assumptions (which are bad, mmkay?)
If I had my VCG off it wouldn't be too hard to measure it, but would require a crank degree wheel and a dial indicator
http://ftctools.com/magnetic-base-with-dial-indicator-set
https://www.summitracing.com/parts/cca-4787
Here's what the process looks like:
https://www.youtube.com/watch?v=la6-EgnCOl4
So anyone changing a VCG and feeling adventurous? :)
These specs can be helpful if you were to opt to have your cams reground to some more aggressive specs rather than buying a whole set, and whether your existing cams have enough "meat" to get to the new specs. In my case, I'm interested to know if the intake cam duration really is 248 with 10mm of lift. Because if it for sure is, I only need an exhaust cam to get the specs I want ;) But there is no concrete info on this. Only speculation and assumptions (which are bad, mmkay?)
If I had my VCG off it wouldn't be too hard to measure it, but would require a crank degree wheel and a dial indicator
http://ftctools.com/magnetic-base-with-dial-indicator-set
https://www.summitracing.com/parts/cca-4787
Here's what the process looks like:
https://www.youtube.com/watch?v=la6-EgnCOl4
So anyone changing a VCG and feeling adventurous? :)