Thanks for your thoughts 39cent and alleycat!
Gary (my compadre and builder of #1950) and I have been talking about your thoughts.
The duration I gave was "advertised." The 0.050 duration is 222* Your explanation of the rod ratio effect was excellent and makes obvious why the blower makes such a difference and why the valve overlap is so critical. As our valve train is original with the exception of cadillac valves and BB valve springs, we're thinking seriously of going to a roller cam,lifters and rockers to get some more rpm. I'm concerned about finding a cam grinder that understands/ has experience with a straight 8 and the rod ratio we're talking here. Do you have a suggetion on who to use? Do you know the lifter bore? With all the racing we've done we haven't had the engine apart since 1981 ( now that I said that we're cursed!), so don't rember a lot of numbers to be looking for " off the shelf" matches.
Yes it is street legal. Had it out last night and will again tonight. Lots of fun to merge onto the interstate heading for town, have the left lane running 80-85, ease out in front of them a bit and watch their eyes before backing off.
The crank is original 010 under to clean it up. Balanced but not lightened so may be able to decrease some reciprocating mass there -- tho makes me a little nervous I might grind something I shouldn't and do more harm than good.
The forged pistons are 3 ring and modern style short skirt with the wrist pin moved up for the longer rods. The deck was squared to the crank center, but not significantly shortened, but the lower end was relieved significantly for the billet rods.
By cranking pressure do you mean a simple compression test number? The big time tuners are monitoring and data logging cylinders pressures which is the name of the game in my book. We plan on sensoring this engine with the usual (intake,exhaust,coolant temps etc) using a MegaSquirt to data log what we can. I'm not sure how they get cylinder pressures or whether that would be feasible in my price range and if anyone has info I would appreciate.
Thanks for your input!