07-23-2020, 08:06 PM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 22,025
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Not Ranked
The Second Lesson
Here's the second lesson I've learned with my FE with the SFT cam: The "gap two valves with 90 degree turns from TDC" method does not work when your cam has 324 degrees of duration seat to seat. The only method that works for me reliably is the EOIC method. When I tried the 90 degree method the results where off as I was not on the heel of the lobe. Now, it wasn't off a whole lot, but it was off. 50 years ago that probably would have been close enough. 
Last edited by patrickt; 07-24-2020 at 10:52 AM..
Reason: dumb typo on "TDC"
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