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| Joined: | 03-14-2005 |
| Location: | Atlanta, Georgia USA |
| Posts: | 406 |
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I just found an old set of notes that suggest the other 'flavor' of 107 cams has a total lift of 0.378" and total duration of 252^. Since my 'flavor' has 0.388", this may be an easier way of determining what you have.
Duration is a bit more involved as the cam needs to be installed in a cam tower with a bucket (or some other way to measure displacement), and you will need a degree wheel and a set of calipers.
Getting reliable and accurate measurements is very dificult. Start by measuring duration from something easy like 0.050" lift, then from 0.025" and so on until you get a good feel for what the duration is at 0.000" lift.
My 107 cams measure 224^ @0.050" lift vs. 272^@0.000" lift which is exactly the same measurement I got for a set of stock JH cams which have total lift of 0.340".