From my extensive use of the search button... I have concluded this.

3.2L NA Crossfire Engine
89.9mm bore x 84mm stroke
90deg V
10:1 CR

3.2L SRT-6 Crossfire Engine
Completely different engine....
89.9mm bore x 84mm stroke
9:1 CR w/ Forged Internals

I'm doing my research on a Crossfire to build a 3.2L Twin Turbo setup. This will undoubtably require New rods/pistons/and sleeving the cylinders... and possible a different six speed transmission. I simply need more information as to HOW these engines are different. Do they both have the MMC cylinder walls? Are these closed deck blocks? Open Deck? Semi-Closed deck? How much power can the NA 3.2 Hold in factory form? How much can the SRT-6 hold in factory form?

From the technical drawing I saw on a benz specific web site it looks to have similar valve actuation as a sohc neon (Rocker arm w/ hydraulic lash adjuster)

Do both the NA and SRT-6(sorry for the typo) engine have the 3 valves per cylinder? Both sodium filled exhaust valves?

Is there anyone who has "built" one of these engines yet?

Thank you for your time and Patience...

Eric Urness
R/TErnie Race Engineering
541 980 6022