Well before you get too carried away: DC Performance is gaining 20+ with a ported Gen IV Intake Manifold and another 30 with ported Gen IV heads.
You can count on 35 more with headers, 35 with a cam and 30 with an increase in compression. I get 150 for a total.
I'm anxious to see some track results.
Maybe we could meet up at Mission Raceway some day...
Ronnie
Ya that would be awsome id love to get back to the track.. its been years.
my best run to date was my first run ever totaly stock, full tank of gas just drove 3hrs to the track, did not even shut off the truck, and ran a 13.3 at 108 , ive never been back modded but ive never been able to get there again either when stock.
Here is how it was broken down to me, gen 4 heads and set up stock over gen 3 heads stock will give 100 crank.. As the conversion will make it the same as the gen 4 motor, so from 500hp to the new stock 600 hp.. so the first 100hp is easy hp thats just the conversion from gen 3 to 4, The next 100-150 depending on your options that you chose with porting polishing of the gen 4 heads and intake, exhaust, rockers, valves, springs, etc etc etc...
Apparently my builder has done a gen 3 to gen 4 conversion fully tricked out and it produced 250crank hp over stock gen 3.. so that includes all the extras full exhaust front to back, cam, new intake ported polisehd, new head ported polished, valves, rockers, springs, all the hardware, the whole 9yards...
anyhow thats what he claims, i have not seen the results yet or am i selling this stuff. but he will have mine together in a couple weeks with pics videos and dyno runs videos,, he says his dyno does the 1/4mile as well with a big screen tv infront to show you runnign the track he will videotape that as well.. So all we can realy do is sit and wait for the 100% proof,,, But he did build my gen 3 stuff and the truck picked up another 125hp, and that was a stage 3 build not his stage 4 which claims to make another 25 to 35hp... So so far good luck.. but When we get some solid data which should be soon.. it should be interesting..