Might anyone know if these engines share the same mounts or have anything in common?. Is the 4b3.9 a shorter version of the 6bt5.9 ? If the room was there could the 6 replace the 4? Thanks any info.
A forum community dedicated to Chevrolet and GMC diesel truck owners and enthusiasts. Come join the discussion about duramax engines, performance, builds, modifications, classifieds, troubleshooting, maintenance, and more!