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MikeW @ Mar 14th 2008 1:46PM
There isn't anything wrong with GM's I4 & I5 engines. They could REALLY use variable intake valve timing.
http://media.gm.com/division/powertrain/press_kits/vortec_dynocam/index.html
The problem is the obsolete 4 speed automatic.
GM should have launched the canyon/colorado with the 5L40 ('04,'05,'06), and should have upgraded to the 6L45 ('07,'08,'09) by now.
Maybe for '09 Toyota will couple the 8 speed automatic to the 5.7 V8, and hand me down the 6 speed automatic to the 4.0V6 and 4.7V8.
Any chance Nissan will get that 7 speed automatic into the Titan/Frontier ASAP, more than likely.