Posted By: -Cuda
Valve springs - 01/14/13 04:32 AM
What was the specs on factory 906 springs? I have been looking at a Whiplash cam and it has rather high rates.
Valve springs
Posted By: Dunnuck Racing
Re: Valve springs - 01/14/13 04:54 AM
You'll need different springs. Even if factory springs were the right spring pressure when new,they are very old and weaken with age and use. 
Keith
Keith
Posted By: Cab_Burge
Re: Valve springs - 01/14/13 08:38 AM
Quote:I'm thinking the HP specs where 95 lbs on the seats and 300 lbs. opended at .484 lift at the retainers
What was the specs on factory 906 springs? I have been looking at a Whiplash cam and it has rather high rates.
I like and use 140 to 175 lbs on the seats and 325 to 375 opened on flat tappet cams, solid or hydraulic lifters. I use 1.6 ratio rockers whenever I can on Mopar BB motors 