2257P TRW piston compression info??

[max340]

Got a set of new pistons and I can't find the numbers on them. Been looking all over the web. Flat top "2257P 030" stamping. Thanks for your help. TT

 

[69Bee]

This is what I have found so far:

Sealed Power, 383 60-71 4 bbl, 1.900 ch, 1.094 pin, 5/64,5/64,3/16 ths, 0.330 piston top to ring top, 732g weight w/o pin, approx. assembly weight 1703g.

this info provided by wildman 340 in a previous post.

I will confirm tomorrow as I have a Sealed Power Piston catalog at work.

 

[max340]

Thanks 69Bee. I appreciate the effort.

 

[69Bee]

The best I can find out is the info for 383 I listed above seems to be correct. Pistons are flat top; should measure 4.280" for 0.030" OS 383; IHRA/NHRA legal piston for a 383 Magnum motor.

 

[max340]

Got my answer on moparts. 9.6 with 906 heads. Thanks 69Bee.