I'm just looking for a few pros and cons from a few different people on these blowers. Also, post up your power at what boost if you have either. Thanks guys!!!
Either will do what you need it to do. I have a KB 2.8H right now. It makes 723whp on a MMR Bottom end, Stock head/stock cams, 27psi on C-16.
I have seen 3.4's make the same amount of power on the same boost on some good octane and timing thrown at them. Whipple 3.4's seem to run quicker/faster as a whole. There is a guy on modfords who just ran 9.08@149 on a stock longblock 03 Cobra, non crusher 3.4, 25psi e85, c4 with brake, 9". Car weighs 3425 with driver. You can make your assumptions there.
Keep in mind when you spinning these blowers at these boost levels its pretty much worthless on the street due to the heat the generate. Bottom line, unless your using it for a peak HP/race style application I think either blower is a winner. You cant go wrong.
I went with the 2.9L and very happy with the performance & street manners.
705 RWHP with 91 tune and 18 psi boost
:bs:
Must have ported heads, cams, ext. To make that kinda power on that much boost.
Ive got a 3.4 with a evolution modified inlet and I'm gonna run 21psi for street 93 pump. But it needs more boost to hit the g spot, so I'm gonna run about 25psi on 109 or e85. That's where they make the big power!