[TRADERMIKE 2012]

Originally Posted by Jay S

?????

some pictures are kind of fuzzy. But it looks like they are all the same. Backwards.

I have put together piston reversed for years on different engines, including Pontiacs, I could never really tell it made much difference anyplace. That includes noise, oil usage, or power.

I know of a 340 Mopar that someone took the engine apart, pulled rods and pistons out, took the free-floating pins out of the factory pistons, flipped the pistons around so the offset was backwards from stock, reinstall the pistons in the same holes, with the same rings, on the same tune, and pickup up 2 tenths in the 1/4 mile. A 340 is not a 428, a 428 is not a SBC 400. There is a reason that it became a well-known speed trick, on some rare occasions it seemed to make a difference.

Mike there can be some valve terrain noise that comes from running Rhoad's lifters. Make sure you're ok with that before you go in that direction. If you're after an extremely quiet running engine, they probably are not for you.

Mikes reply:

I was told about the Rhoads noise and I wonder if losing one noise to solve an existing noise is what is about to happen here. If you have read through this entire Thread, you will understand what I am talking about.

They are all installed backwards, look at the notch, except the # 2 Piston is in the factory way, I can't reason why they would do that. I do wonder if they Blue printed and balanced this motor and then found it necessary to keep the #2 Piston in for weight reasons? My father raced Gymkhanas in the 60's and he blueprinted/balanced his corvettes 427 ci Engines for the rules allowed it. So, I figure that may have been done to this Engine.

The forum is aware that this Engine has Build codes added to the Block after it came out of the factory, when they added their YK and EUN #'s to the front side of the P.S. block. The #'s added to my block by a builder in 1968 are upside down and on top, along the side also. The 1967 428 ci motor did not come with a partial vin., in that year, therefore the Engine may have been sold to a racer over the counter. Where he had a company mechanic add the Tri-power Cam, Intake and Carbs. in 1968. The story is a moon shiner driving this Engine, drove his truck over a mountain in the Carolina's, on a shine run, then the Engine was retrieved and sold to the man I bought this second-hand project from, who passed away.

So, I can't ask him any more about this subject. The more I get into this Engine the more race ready it becomes. I wonder if it was on a drag track or round robin ovels? With the Heads removed we note that no Exhaust Valves have new hardened seats except for the two we are adding now. Also, you can read the #'s on the Block that depict what Piston the factory installed into each cylinder, that shows that the Block is not decked yet, original piece here!

This is a photo of the mod. that we recently invented/added to our air cleaner's filters, that add air from the top and lean out the Carbs. a little more to add Volumetric Efficiency to our vehicles tune-up!

Drill concentric holes and add 2 layers of metal screen diagonally behind the covers, glued on the perimeter, do you think it will work?