Originally Posted by MD SRT6
I'm not trying to debate you on this issue, I was just stating my personal results and disagreeing that head work is not a worthwhile mod.If you would have read my complete post you would have seen that I don't have a lot of dyno sheets as I use the track as my "barometer". And by no means am I proclaiming myself as an expert on all these issues I'm just speaking of what I got out of my modifications. By the way a tract is a measurement of land
And as Forrest Gump said "That's all I've got to say about that"
I think with the 3 valves per cylinder, 2 being on the intake runners straight below the supercharger, there just isn't much to be gained. I would say you will gain some but not 2 tenths or more. I really personally doubt even a tenth. As to why you car is fastest so far, has yet to be determined. I'll have my car done for ATCO in NJ and I'll see what it actually does. My mods are a little different, LET tune and SL-55 intakes, my own modded plenums. The 181 pulley and rear cat delete exhaust are similar to yours. It will be interesting to see. Maybe I'm wrong with the head work but time will tell. A good indicator of how well the head porting worked would be seen in a drop off in boost. This would be due to illiminating restriction. I don't know if you had gauges at the time on not. I'm not here to argue with you. It is just that the new style heads today with the 3 and 4 valve set ups are pretty good out of the factory and don't really benefit like the older style heads.