I have a 4d56 which I like. For what it's worth, the local MMC parts guy says the 4m40 is more powerful and reliable. He says they don't come back for repair. Having a timing chain instead of a belt is a plus in my opinion. I hope to have a 4m40 ITD in my future.


89 3L V6 5spd SWB, Aisin Manual Hubs, 2 (suspension) seater Raider in Wheeler, OR