[MilzyZ34]

Originally Posted by WhiteV6

So you only consider flow past .325 when you say the stock 3500 heads can't touch your stage 3? Even with .600 lift, you have half of your lift flowing less than a stock 3500 head.

My boost heads outflow the 3500 intake ports at every lift point from .050 to .600.



So 222whp from a "mild" 3400, and your stage 3 put down 227whp. Im just questioning your choice of words, thats all.

What I said was that they flow about equal (0-4% difference below .325 lift, with the greatest difference being at low lift) until around .325" lift, where my Stage 3 heads pull a considerable gain on the 3500's. Do your boost heads flow 290+cfm?

I congradulated you on your 222whp. It's a very impressive number. On our dyno, we made 211whp with Tim Kaczun's Stage 2 car with 140k miles on it, 90k miles since the Stage 2 parts were installed. Why are we 11whp shy of your 222? It could be a number of things: we could just have 11 less hp, the 2.5" press-bent exhaust Tim has may be restricting us, the variance in the dyno's could allow for some inaccuracy, perhaps you locked the torque converter up to increase the numbers, or it could be a weather/humidity thing ... who knows. Until we actually measure it with the same tool, there will always be room for argument. The only thing I can say about where I dyno is that I take every single car I dyno there and so do a lot of other GM V6 guys around here, including Intense Racing. It's become the benchmark dyno for us, where we can quantitively measure a car's performance. The 227whp was one of our preliminary passes, and I've covered that before. It is a good amount at the wheels, but trust me there is room for improvement with the replacement of some of the restrictive parts. We'll just have to see what the future holds for a Stage 3 car, but I'm shooting for 240-250whp.