does anione have some info on the ford 400 trw forged pistons that were made fore the 400 ford 8.2:1 compression ? are the 1.647 heigth and vith 14.5 cc dish ?

 

351M/400 Performance Build Up

 

I have had a tmyer 400 for 10 years, I feel it is EXTREMELY sensitive to timing, likely due to the poor quench. I calculated the CR higher than advertised. It has run OK for 10+ years. I am not thrilled with the thin rings near the top, I feel the design could benefit from a few changes.

 

Lack of good replacement piston selection
That is one of the main problems when building a 351M- 400 Ford
Consider having a set of custom ones made
Flat top 10 to 1 is what I'd shoot for, with some valve reliefs

 

It is easy enough to bush the rod to use the .912 wrist pin by using a bushing that's made for a Y block. These fit right in the .975 pin holes in the rods. Then any 351C piston will work as long as it has provisions to retain a full floating pin. Not too long ago I modified a set of the T Meyer pistons for a customer who has small chamber Edelbrock heads and wanted a little lower compression. I just milled off around the outside of the dish and left the large flat quench area alone. This worked fine and if I remember right I gained about 8cc. Most pistons have enough material to allow for these modifications but you have to measure first and hopefully cut once.

 

Not sure why you want forged pistons with low compression.

 

Longevity
Turbo or supercharger applications