Newold1 wrote: ↑Thu Jan 04, 2018 10:57 am
1. I am guessing at this point that this is a standard 454 engine block and standard 454 stroke with a +.040 overbore? Kind of an odd overbore, why?
Yes, original block, crank, rods. It was already bored 030. I went 040 because that way I have at least one more bore if needed. Since it's #'s matching I want to stick with this block as long as possible.
2. Where the heads resurface cut anything more than .003" to .005" or more?
Just a cleanup pass.
3. Was the block decked any significant amount ?
Yes, big time. GM decked it crooked. Pass side deck was 020 high in the front, and driver's side 020 high in the rear. It is now decked to where pistons are 0.005" down.
4. Do you know what the rod and main clearances were set at?
All set towards the loose side of GM spec. I think rods at 0.003"?
5. Was there any change in stroke?, Rod length?
No
6. With the engine running have you pulled the PCV hose and PCV and looked for how much pressure is coming from the crankcase. Simple quick check done at idle and maybe 2500 rpms?
Tried it some time back. Didn't notice much. I have a breather on the pass valve cover and it doesn't spit oil at WOT even though that valve cover has no baffle (the cover with the PCV valve is baffled).
7. Why such heavy oils on what at this point seems to be a pretty mild street engine?
Heh, the machinist told me to run 20W-50! I settled on a 40 weight as I'm in a hot climate and don't drive it when it's cold. And yes, it's is definitely a mild street engine.