5.7 0r 6.1 with msd hemi 6 and carb

Excellent point Map63vette! Although I think the dragpak manifold is too tall for most applications, I'd love to see some dyno numbers to see how it performs on both an injected and carbureted motor.

HemiUp, thanks for posting some first hand knowledge of the limitations with the XV intake manifold help to clarify some of the choices.

Does anyone have any experience with Individual Throttle Bodies from the likes of Hilborn, Borla (formerly TWM), and Extrudabody? I wonder if being able to adjust the length of the ram tubes would give the ability to gain more top end while preserving mid range torque that many of the single plane manifolds seem to give up? At the same time all the factory intake manifolds seem to run out of steam around 6000 RPM.

Finally, according to this article on MS3 and about 22 degrees of advance at WOT is about the max for this motor. For those who've run 50 degrees, me thinks there might be some other issues in your setup. I've never seen a motor run well on 50 degrees of advance.

http://www.diyautotune.com/tech_articles/how_to_megasquirt_your_new_hemi.htm

Regards,

Joe Dokes