I just got the flow numbers for these heads and they are awsome.
My question is does anyone have a experince with these heads? I'd like to know if there where any quality issues before I get these in a few months.
intake
.100 .200 .300 .400 .500 .600 .700
71.7 144.9 206.4 252.4 288 301.7 310

exaust
.100 .200 .300 .400 .500 .600 .700 exaust
52.2 104.9 146.2 182 203.2 219.2 228
The specs are here http://www.jegs.com/cgi-bin/ncommerc...50&prmenbr=361

 

What engine are these going on? I would not run these heads on anything less than a 406 unless the engine will see a big solid-roller cam and be basically a strip car. The other issue is Jeg's forces you to buy their special offset rocker arms to make these heads work. I don't like the idea of being trapped into buying extra parts on a set of heads when there are other as good or better (like AFR) heads out there that don't trap you into special rocker arms and other valvetrain parts. I could see it if these were 18 or 15 degree heads, but not for a traditional 23 degree head.

A better idea for a street/strip 355/383 would be those Jeg's 197 cc heads. Good value and big valves for the price.