I guess I'm a little slow in my thinking. I sent this to Hughes and they did contact me back and he said, "follow the cam card". "Stay off the Internet" when I mentioned installing @ 103-104 degrees and 104-105 degrees.
| Grind Number | Valve Lift 1.5 | Valve Lift 1.6 | Duration at .200"
tappet lift | Duration at .050"
tappet lift | Advertised Duration
(at .020" lift) | Lobe Separation Angle | Opening at .050" tappet lift | Closing at .050" tappet lift |
| HEV3945AS | INT .546"
EXH .560" | INT .582"
EXH .597" | 157
163 | 239
245 | 270
277 | 107 | 15.5 BTC
52.5 BBC | 43.5 ABC
12.5 ATC |
Well, this looks a lot different than the cam card with an Erson Cam I have on hand. So, I'm guessing he's recommending installing @107 degrees. I'm going to start assembling this engine soon but I'm going to buy a true roller timing set with multiple keyways on the crankshaft pully to hedge my bets.