This is a very hard decision. Pretty much seems like all 3 seem what I'm looking for. So i'm looking for facts and opinions on them. !. Which one would reach max psi sooner? which one would keep max psi to the end. which one would give me max power and which one you think would be the best?

I plan to pair it with s2 cams, valves and retainers. Still running stock block but maybe plan to build the engine in the future.

 

7670 will spool quickest
3582 will produce most power

 

Knowing what each one does like what you mentioned helps. I also been looking at prices and I also been looking at different dyno sheets from different builds. What I like about the 7670 is that it reaches max psi around 4k rpms. Which I really do like. I'm looking into the other ones I mentioned. I know they all difference but I wanted them compared and to know the difference so that it would help me on my final decision.

 

I have a 5858 on my MR and I really like it. Full boost by 4500RPM or sooner and makes power all the way to 8k. Stock long block it made 440WHP on 92 octane. I really like it.

- Robert