new performance camshaft old Elgin # C450P fits big block chevy solid lifter type , classified super full race , cam lift .3412 int. .3467 ex. , valve lift .575 int. .612 ex. , duration 337 int. 334 ex. , lash int. .022 hot , ex.026 hot,,,Caprice , Impala , Camaro , Nova , Chevelle

Dennis,I think that cam is 258/268 @ .050 110 LSA

It's not an Elgin E-1010-P is it??

Spec's;

320/258/330/268, 110/105, .595"/.621", lash = .026"In/.026"Ex.

pdq67