Posted By: dart443
Old cranecam specs - 02/09/14 06:29 PM
Need cam specs for HIT 282-NC big block. Thanx
Posted By: 62maxwgn
Re: Old cranecam specs - 02/09/14 07:05 PM
The advertised duration is 282 degrees intake, 290 degrees exhaust, as checked at .0029" tappet lift. Lobe lift is .3067" intake, .3236" exhaust. Gross valve lift with 1.6:1 rockers is .491" intake, .518" exhaust. With 1.7:1 rockers, it's .521" intake, .550" exhaust. Lobe separation is 114 degrees. The duration at .050" tappet lift is 226 degrees intake, 234 degrees exhaust. cam timing at .050" is: intake opens 4 degrees BTDC, intake closes 42 degrees ABDC, exhaust opens 56 degrees BBDC, exhaust closes 2 degrees BTDC.
Posted By: cknight
Re: Old cranecam specs - 02/10/14 08:21 PM
For a big-block MOPAR, the HIT-282-NC is a hydraulic lifter grind with 282 degrees advertised duration on both intake and exhaust. Lobe lift is .3000", providing .450" gross valve lift with the standard 1.5:1 ratio rocker arms. The duration at .050" is 226 degrees on both intake and exhaust. lobe separation is 114 degrees. Timing at .050" is: intake opens 4 degrees BTDC, intake closes 42 degrees ABDC, exhaust opens 52 degrees BBDC, exhaust closes 6 degrees BTDC. Regards, Chase