What size dome was used on these pistons? Also, what size chambers do the "148" heads have? Thanks!

Dome should be .180
Not sure of the cc's of that head

http://www.nhra.com/tech_specs/runners/index.html

The above link is the guidelines NHRA goes by for superstock.

todd

http://www.nhra.com/tech_specs/runners/index.html

The above link is the guidelines NHRA goes by for superstock.

todd

CC on that head is 112. Or at least that's what I found. I have a set laying on the floor of the garage right now. smile.gif

What is the piston dome size in terms of cc?

..not sure,but read this:
Compression ratio: 396 with closed chamber heads: 9.71:1 (100.9cc heads), 9.20:1 (106.9cc heads), 9.00:1 (109.4cc heads), 8.47:1 (116.9cc heads), 8.33:1 (119cc heads), 8.02:1 (124cc heads)

This is for TRW-L2230NF40 w/a .182 dome


http://store.summitracing.com/partdetail.asp?part=TRW%2DL2240NF30

A little info that may help you. I recently pulled my heads off to check for piston/valve clearance an decided to verify the comb. chamber cc's while at it. The heads are casting 364290 (considered semi-open chamber), Mortec lists these as 101 cc. Mine were actually an average of 105 cc. This is after a small amount of valve unshrouding and a minor dress up of the comb. chamber. Also, the heads have been cut at least twice that we know of, once before I got the car, and recently we had to clean up the surfaces because these were too rough. I have seen these heads listed as 106 - 107 cc, and I would have to say that they are definitely larger. The only comb. chambers that are probably under 100 cc to start with are the early 396 heads. When trying to figure compression, I would physically measure the heads first to verify what I was dealing with before looking at pistons.