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solid roller valve lash
Did a search for this topic and found a good thread back from Jan. 2019. So I called lunati about my cam which according to the cam card calls for .020/.022 lash I/E. I assumed incorrectly that their #s were for cold. The tech said they were for hot setting and he suggested since I have aluminum heads to set the I/E at .012/.014 cold and then check hot to see how much increase. He gave a range of .007-.010 increase when hot for the aluminum heads. This seems to square pretty much with the #s I was seeing from the past thread although a little on the high side.
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69 Bird w/1970 400 block(409 cubes), #64 heads, hyd. roller, Q-jet by Jeff E., original interior, ps, pdb, th350, and 3.73 gears. Pump gas, street driven muscle. 3800 lbs. race weight. Best, 11.39 @118, my son's car. 79 T/A w/463, Scat crank, Eagle rods, Icon pistons, Lunati solid roller, 262/270, KRE 325 heads, Northwind intake, QF950 carb, full interior, ps, pdb, th350, and 3.73 gears. Pump gas, 3650 lbs. race weight. 10.68 @ 126 so far... no tuning yet. |
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