Personal opinion, with 70-80 on the seat, the engine is going to have a lot of unwanted harmonic spring issues especially on the intake side as the intake valve weight is obviously heavier vs the exhaust weight. My 995 springs were quite a bit higher on the seat on my 70 455 engine build.
In the 145# area with the 744 high lift Blue Racer camshaft.
Tom V.
__________________
"Engineers do stuff for reasons" Tom Vaught
Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward.
|