Hey 64NovaWagon
Just for the record I want to let you know I ran Cranes Gold BB 1.7 rockers for the better part of 17 plus yrs on my 250 with a 583/607 lift cam and ran that motor as much as 8000 rpms and I never had a issue with the tip of the Valves Nore have i ever had to replace any parts due to useing Those rockers. And I had asked Mike Kirby If it was worth the money to get a 1.75 rocker
and he told me if i wasn't having any problems with what I had on the motor IT wouldn't be worth the cost to buy new ones NORE
would i see a difference in the motor.
But yes there is a difference in a 1.7 to a 1.75 But kerry if you
can get your hands on a good Used set of 1.7s from a BB (for cheap) WE have Harland Sharp make rockers for US That are a true 1.75 and are also machined for Big lift cams & Large DIA springs
(meaning they have been machined for push rod clearances & Springs also 1 & 12 have machined to clear the valve cover.)
You can get them from myself Or MrHotRod6
God doesn't like ugly.
