I copied this from an answer to your same question made over at R.O.P. I did not verify all the data as I am at work right now but I think it is accurate. At least it can get you started on your research.
1968 Ramrod Engine Specs:
It had a 325 HP 350 CI engine with Ram Air (under the bumper scoops feeding the 350 ci engine).
Details:
10.5 comp. ratio (flat top pistons).
#5 heads fitted with 2" intake valves and 1.625" exhausts.
Camshaft was 308 degree duration and .474" lift.
Matching heavy duty valve springs.
Special recalibrated Q-Jet carb.
Larger harmonic balancer.
Standard cast iron intake.
Engines were "select-fit" assembled. Cylinder bores are honed to the "D" spec. and use "A" pistons resulting in a larger skirt clearance of .003" - .0035".
A 6 blade fan with a fan clutch was used.
All were Force-Air inducted.
No special W-31 coded distributor. Used that years standard 350 4bbl distributor.
Exhaust manifolds were the same as the standard 350. But BOTH exhaust pipes and mufflers were 2 1/4" inlets (2" outlet).
Hope this helps out some..
