Tims 66 Cuda
Mopar mid life crisis
I,m building out a set of bare Speedmaster heads. I have Ferrea Valves with 2.02 intake and 1.62 exhaust @ 5.010 length. I,m running Comp 995-16 springs. Heres the thing, installed height should be 1.700 as per Comp. Mine with micrometer read 1.840. Pressures should be 115# closed and 335#open. At this combination height with a.060 shim, I have 115# closed and 295#open. My question is will 40# loss open do any damage for a street engine. Any and all help welcome.
Tim
Tim