i dont know much about W2's and never knew there was a limited rocker arm selection...what brands are still making them (besides mopar) and how much am i looking at?
The W-2 rocker arms use a off set arm and one regular arm, same as the 340 T/A head. Most everybody carries them. Crane left overs if possible, Comp, Huges, Harland Sharp, etc....
I quickly found these Harland Sharp Rockers. There top notch brand name units. Also, remember, the W-2 came in versions that have rocker arm pedistals for a quick and easy rocker arm mounting and one without rocker stands so you can correct the geometry.
im not sure, id have to check that out actually...assuming they are above deck height, i would say no higher than an oem 340 piston, but i could be wrong...what does chamber size do in terms of dictating power levels and piston styles?
The smaller chamber would be a (very) closed chamber vs the open natural state of a X J etc.. 340/360 head. The differnce is 72 vs. 55 cc's. Use this difference in a compresion cal. and whatch comprsion jump. It is often said that 1 point rise is approx. 3%. Of course, the huskier build will develop more power as a milder build willl (IMO) not gain as much from the rise from the extra squezze.