B bz393 New Member Sep 24, 2006 29 0 2 maryland May 28, 2008 #1 May 28, 2008 #1 Does anyone know how much lift stock gt-40p valve springs are good to? I want to use them with a E-303. Any info is greatly appriciated.
Does anyone know how much lift stock gt-40p valve springs are good to? I want to use them with a E-303. Any info is greatly appriciated.
RYC CUKR Founding Member May 19, 2002 1,437 1 38 Orlando May 28, 2008 #2 May 28, 2008 #2 They won't support the lift of that stock HO cam let alone an E cam. I cannot give you specific lift and duration figures but when I swapped out my heads for a set of Ps I replaced the valve springs even with the stock cam.
They won't support the lift of that stock HO cam let alone an E cam. I cannot give you specific lift and duration figures but when I swapped out my heads for a set of Ps I replaced the valve springs even with the stock cam.