3.4L Whipple article in MMFF

[SWThomas]

I just received my issue of MMFF yesterday in the mail and was pleased to see an article about "The Fridge" getting a 3.4L Whipple. Jim JR told me about this when I was talking to him a couple weeks ago. They actually had the truck on the dyno as we spoke. This article was a good read and really put some light on a few of the discrepancies with this new blower. They specifically addressed the issue with the locating dowels. They said that the midplate had a hole that was only machined deep enough to accomodate a 0.690-inch dowel and that the factory dowel was 0.755-inches. This has been common on almost all of the new 3.4L kits. I know I have personally told Whipple about this so hopefully they will address this issue for future kits. The articles also addressed the issue with the IAC - coil pack clearance. JDM machined off a portion of the IAC mounting surface on the plenum to gain clearance between the IAC body and the coil pack underneath when mounted. It seems like a very easy fix and hopefully Whipple will take corrective action on this as well.

This article really shines some light on the efficiency of this new compressor. With the same pulley combo they used to make 21 PSI with the 2.3L Whipple (3" upper and 10" [8#] lower), they made a whopping 31 PSI with the 3.4L! They actually had to go with a 3.5" upper and 8.75" (4#) lower to bring the boost down to 24 PSI. That's still a lot of boost considering the blower speed. They maxed out the fuel system at 710 RWHP and will be upgrading the fuel rails to try for more. According to this article they're going to publish another article next month with the results of the fuel system upgrades. I'm looking forward to seeing what they come up with since they'll be installing pretty much the same fuel system I and a few others are running with this blower.