1977 C-10

Have a Lunati going into a 455. Rebuilt E heads. Specs: Cam Style:Hydraulic flat tappet
Basic Operating RPM Range:1,300-5,500
Intake Duration at 050 inch Lift:219
Exhaust Duration at 050 inch Lift:227
Duration at 050 inch Lift:219 int./227 exh.
Advertised Intake Duration:262
Advertised Exhaust Duration:268
Advertised Duration:262 int./268 exh.
Intake Valve Lift with Factory Rocker Arm Ratio:0.499 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio:0.510 in.
Valve Lift with Factory Rocker Arm Ratio:0.499 int./0.510 exh.
Lobe Separation (degrees):112 Will this work w/stock rockers, pushrods,ect? Thank-you.

dc2x4drvr

Your rockers will work fine, pushrods maybe, depends on if the valve stems are all the same height, or if the heads were milled, block decked? You're replacing the valve springs, right?

1977 C-10

Thank you for reply. Rebuilt heads include the new springs. No milling/decking. Information like this is very hard to find on the 'net. A reference library of builds from bare bone (mine) all the way to beyond insane would be great. Combinations and updated parts dealers. Mondello (what 2 of them?) have Helter Skelter reps.