Its all internal but if you pull the pan you will see where the block is notched out for rod bolt clearance on the 347.
do you have a picture of what the nothing would look like or maybe a link to a picture somewhere that would show exactly what this would look like.thanks.
Just look for notches in the bottom of the cylinder bores that line up with the rod bolts. It would not be possible to distiguish the two from the outside.
Here's what mine look like. http://mmb.maverick.to/showthread.php?t=15018 About half way down the page.
Couldn't one pull a plug, rest a 'measuring stick' on top of the piston, turn the crank and measure the stroke? (3.0" vs 3.4" ?)
That is great thinking, but I don't know if you could get the right angle on a wedge head spark plug hole to get a small dowel to the bottom of the stroke - now if it was a hemi head !!
ha! The most obvious of all! ....unless the car isn't driveable or the engine is on the floor of somebody's garage.
Nascar measures displacement using a big graduated container of jelly-like stuff. They squeeze it into a spark plug hole with the piston at TDC and see how much the combustion chamber holds, then they put the piston at BDC and see how much volume it takes the fill the cylinder. Mutiply that figure by the number of cylinders.
I think I would expect to see all sorts of invoices and reciepts. Even with papers, it would still be hard to tell if the work was done right. Someone cannot expect a premium in price if they cannot prove what they say. Otherwise, they may just be looking for a sucker. Dave