I read that the 1993 3.9L had 220 hp & the 1994 3.9L has 175 hp they said they changed the exhaust manifolds & that maid the diffrence (94)was thicker less flow is that true? how can I boost the power in the truck(94) i've been restouring the truck a little at a time.
will the Exhaust Manifold from a 1993 3.9L fit a1994 3.9L on 1994 Dodge Dakota
The exhaust manifolds should be the same. the best way to find out is to call or visit your local dealership and have them check the part numbers. I doubt that there was a 220hp 3.9L engine, however any horsepower difference in the engines would probably be through camshaft design and/or software programming. The best way to increase power is to install a low restriction air filter and exhaust system. Headers are also an option.