Camshaft spec's for 1986 OMC 5.7 L 260 HP so I can Pick a new Camshaft during winter

Here's what I have 1986 OMC 5.7 Liter 260 HP, will be using q Jet stock intake and exhaust,

Here the stock spec's I found here on iboats and else were on line would like to Verify ;

Intake .390" Lift 195 degrees duration @ 050"
Exhaust .410" lift 202 degrees duration @ .050"
LSA 112 degrees, overlap ?? I think its 91 Degrees

Was thinking about a replacement roller cam from comp cam ? any one know the roller cam spec's on 2008 Mercury 350 Mags ?
I thought this would be a nice size not to big as these idle nice, don't want to big just one size up from stock as the duration can be keep down but the lift goes up pretty quick.

Heres the hydraulic flat tappett; Comp Cam XM 256H rpm range 1000-5000
I .447 " 212 degrees duration @ .050"
E .462 " 218 degrees duration @ .050"
LSA 112 degres , 34 degrees overlap

Hydraulic Roller tappett; Comp Cam XM 264 HR rpm 1200-5200
I .488" 212 degrees duratuin @ .050"
E .495" 218 Degrees duration @ .050"
LSA 112 degrees, 43 degrees overlap

These are the smallest non stock grinds they Have.

Thanks Again ! Scott

Re: Camshaft spec's for 1986 OMC 5.7 L 260 HP so I can Pick a new Camshaft during win

Valve Lift
Intake .431(10.947)
Exhaust .450(11.43)

http://www.perfprotech.com/blog/articles/mercruiser-57l-mechanical-specifications

Re: Camshaft spec's for 1986 OMC 5.7 L 260 HP so I can Pick a new Camshaft during win

Faztbullet said:

Valve Lift
Intake .431(10.947)
Exhaust .450(11.43)

http://www.perfprotech.com/blog/articles/mercruiser-57l-mechanical-specifications

Click to expand...

Thanks ! do you have any idea as to the duration @ .050" the spec's listed don't make any sense to me ? doesn't list in degrees and the lift number is greater than the listed camlift ?