tuolumne
Gold Member
On a related note...the 3120 has the same engine displacment (90.1) as the 3520 and 3720. The turbo is the difference in HP. The 3320 is listed as 100.1 cu. in. Will the 3520 or 3720 get better fuel economy than the 3320 even with the increased HP, or does the pressure negate the lower displacement?