Re: Fuel engine questions 555 ????
Redmanf1, and not just any machine shop. There is a HUGE variance in quality and expertise even amongst the "experts". I have no doubt in my military mind, none, that some of the bonafide experts here, Mark Jones in Colorado Springs, Mike Lewis in Northern CA, Carl in NY, Bill in MD, Chris in TN, etc.... can take your parts and reconstruct it into a 700 hp monster.
Me, I might just order a new HR cam from Chris, do the swap. I think that one move, unless there are issues in overall assembly, will net you a HUGE gain in RWHP. It wont be cheap as you may need springs and lifters. BTW, swapping springs while head is on engine is pretty easy with apiece of ignition wire ( or rope), and a Lisle on head spring compressor. A mag-tip machinists scribe also makes it easy to catch the locks.
And you may get lucky and only have to swap out the bumpstick. Straub will advise you.
Brother, our on-board experts can make the same, if not more , power from your 402 ( with the factory heads in Jones' case) , so you have every right to be sadly disappointed.
Call Chris Straub, he'll advise you as to whether a simple cam swap will get you where you want to be or not. I'm sure he'll tighten up the centers, etc,. to give that 8.75:1 all the cylinder pressure possible.
That's my read. The cylinders arent filling properly. Valve event issue. Call the pro cam guy and explore. You may have that bad boy all "narly and snotty" in a weekend for less than $500. Best case, but worth exploring.
Guaranteed result, put the 402 back in, enjoy it,and send the parts to a BONAFIDE rat expert for re-assembly.
ACES 3112/Team Chevelle Gold #62
Be big, be a 'builder'!