Originally posted by Rara:
The real question is, is it worth it?
Depends on who does it, as pointed out, there are far less issues to overcome in the Mazda6 3.0 than the 3.0s your swapping in the Tours and the factory 2.5s.
I like a challenge, rather, I love a challenge. When someone says it cannot be done or is too hard, I love to find a way (Hell I am buying a $500 intake manifold just to see if it will fit [And a $400 CD ignition box with universal directions that were no help]).
An M90 can be bought off of a GM 3800 on Ebay for just a few hundred. Quite a few sites littered with all the particular dimensions you need off of an Eaton M90 to draw up an intake manifold and submit it to a machine shop. It could all be done up for far less than the ADC or Vortech kits, for me that is. Mount the injectors on the outside rather than in, fab up two fuel rails (Hell I've seen someone here do it with just a few pieces from Aeroquip). Shorten the engine mount (I plan on purchasing some flexible urethane and taking mine off to see how easy it would be to do so).
ZZPerformance will even take your M90 and swap in Gen IV MP112 (Found on the Lightning and 03 Cobra) rotors and snout all in the existing M90 casing for only $649 (Save you supply the donor MP112).
I have personally witnessed how well these breath on a GM 3800 and what kind of numbers they can post.
Driving the Caliber
Side project: The LT-5 Fiero is being born..
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