Internal differences between Bosch and Gems engines


Well-known member
Jan 23, 2011
Are there internal differences between the GEMS and Bosch 4.6 short block? Are internal parts such as the crankshaft, pistons, and rods interchangeable?


Active member
It's obviously doable, but how much work is it to install a GEMS 4.6 in my 4.0 Disco 2? (I think I have a good one to use). Can I install the CPS bracket from the Bosch? Then just the intake manifold? Also, what about ECU settings?