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Well basically its a 3.4 top on a 3.6 bottom- same bore but different rods and pin placement yield longer stroke. I already had a spare semi-complete 3.6 motor so had parts from it to use, Still, new rods, bearings, crank, rings etc. was more than $5k. I would not have done it this way had I not the 3.6 case to start with.
My 3.4 dyno'd at 284whp- prob got another 5-10 hp with some other work. When finished the 3.6 should be circa 305-320 with better tq characteristics. Not a huge bump but moves me towards or at class limit (GTS4)
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