View Single Post
dd74 dd74 is offline
drag racing the short bus
dd74's Avatar
Join Date: May 2002
Location: Location, Location...
Posts: 21,980
For a CIS and/or Carb discussion, check out this thread. Look in particular for Tyson Schmidt's comment on the conversion. I'm offering this only as a point/counterpoint argument.

Secondly, did you say what year your 3.0 is? There were, for the five-year-run of 3.0s, two U.S. variants of the engine, provided you have a U.S. 3.0. Both do vary in their personalities.

Surely stronger valve springs are insurance, but if you're not racing the car in a way where you can miss a shift, I'm not certain the value is worth the cost. If you are, or find yourself driving aggressively, then I'd change the valve springs out, particularly if you're putting in a more radical cam - not necessarily a 964 cam, but for a cam like a 20/21, which is slightly more radical than a 964 cam.

As is, the stock 3.0 valvetrain is supposed to be good up to 7,300 RPM.
Old 09-22-2005, 10:41 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #14 (permalink)