[DonDavis]

My 71's engine is a ROW 3.0 #930-03. Kind of a long story on how I came across the car so I'll save that. I could not get documents on the engine so I'll list what I can. It has the standard SC exhaust on it and a few other visible mods that my "un-trained eye" can detect. Things like turbo valve covers, tensioners and pop-off valve. No smog stuff or a/c. Oh yeah, it runs GREAT!

Casey was saying that torque kicks in closer to 3K with the 9.8:1 p/c. I can say that my car takes off well and has LOTS of pull at 3K and is still pulling hard as I approach redline. Is he saying that there is a definite difference that I should feel if my engine had the 8.5:1 as spec'd?

I suppose the answer will be something like:

" It's kind of subjective and without tearing down the engine, we won't know for certain"

but I was wondering is there another way to check? Outside markings visible on cylinders? and there was a statement about the CIS and the F/D ( fuel distributor??)

TIA