67442nut

Considering boring a '67 "E" block out .057" to accept a new set of 350 pistons.
This will be a stock rebuild.
What kind of piston/cylinder wall clearance should I ask for?
Off the top of his head, the machine shop guy was guessing 005"-007".
Seems high to me for a stock, non-racing rebuild.
In his defense, he DID say he would check what original specs called for.

wr1970

I will give you the same answer you got on ROP wrong tolerence period.

cutlassefi

Wondering if you could be a little more vague? But I guess you could've just said " I have an Oldsmobile and wondering what piston to wall clearance I should use?"
Forged, cast, what?

67442nut

Yes, I was really trying my best to be as vague as possible .
These are what I'm planning to use:
http://www.ebay.com/itm/Speed-Pro-TR...5RuIqN&vxp=mtr

67442nut

I got that.
That's why I'm asking here.
I was really hoping for good answers from experienced people
to keep from depending solely on the machine shop guy.
I guess I'll have to put up with the sarcasm to get answers.

wr1970

You still that confused!468 gave you the answer.004 go re-read his answer.Not trying to be a smart azz. No sarcasm here. I hope this puts you on the right track.

67442nut

I was never confused.
I simply didn't know the answer.
I DID see 468's reply and I appreciated it,
although his answer came before I posted the exact piston I planned to use.

captjim

.0015-.0020 for cast pistons and .0045-.0050 for forged Speed Pro pistons. IMHO

steverw

Ed that Ebay link is showing a .030 overbore piston, which would be 4.087 bore. They do have the same kit and a standard 4.057 bore, its on page 7 of their Ebay store. Maybe you have already seen this, but i would hate for you to get the wrong size.

67442nut

Steve,
Good catch. My mistake.
I bookmarked several options for pistons while I was searching for the best option.
I posted the wrong link.
This is the correct link to what I'm actually planning on using:
http://www.jegs.com/i/Sealed-Power/8...oductId=755706

steverw

Hi Ed, those are the pistons i was thinking about, until i clicked the first link you posted above. Falcon global has the same piston in a KIT as your first link above in standard bore. The pistons are coated and have moly rings included, for a little less than $100 more. The Jegs pistons do not come with rings and are not coated. I really dont know if the coating helps much or not. And maybe there are better or different rings you would prefer. I dont know seems like a pretty good deal to me. If you go to your first link above, Falconglobal on Ebay, then click on their Ebay store on the right, then on Oldsmobile, then page 6, you will see the coated piston in standard for Olds 350, 4.057 bore with moly rings, for $415.08 free shipping.
Or search the Ebay auction #190855113341

67442nut

Steve, thanks for the tip. Looks like a good deal.
Wrist pins also included. The Jeg's deal didn't mention wrist pins.
Again, I'm not an engine builder,
but I know that that the type of build dictates the type of rings used.
This engine will basically be a stock build for a restoration.
I DO plan to use forged pistons, but I don't want to get into
complications with seating because I used the wrong rings.
I need to find out the best rings for my application.
Seems like I'd heard that the moly-chrome rings (I think) don't seat properly if not installed in a specific way.
I need more info on this subject.
I may put my foot in it occasionally, but, this car will mainly be a pretty day, cruise-in car.
Thanks again for paying attention.