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Car Forum / Mercedes-Benz Cars / December 20041979 450 sel tranny change
Hi all, I am hoping to put my 280sel engine into a new 450sel that I bought, they are both the same year, 1978 , I am wondering if the tranny from the 450 will be the same or do I need to pull tranny and all from the 280? It may be a dumb question, I am just hoping that I get lucky and they used the same tranny on both cars. Thanks ahead, Jim in Texas I believe the V-8 uses a three speed, the six a four speed. I believe the rear axle ratios differ too - lower for the more powerful V-8 and higher for the less robust but higher revving six. IMHO you may be disappointed in the six's performance in this relatively heavy car, in part due to the lower rear axle ratio. OK on a flat freeway but not so good during acceleration. Why not look for a used V-8 engine? The 6 cyl is coming out of a 116, and although it isn't fast as the 450 is, I am pretty happy overall with the gas consumption and reliability of the 280. I have been told this car threw a rod, it smokes like heck, but then I had another 450 that had a stuck valve with the same smoke, and the clatter seems to be valve and not block noise. The story will be told when I remove the valve cover. In the meantime I will look for a 450, but I have this 6 all ready to go more or less, as my 280 is rusting off the frame to the point where I am replacing brake and fuel lines from rust(minnesota car). Thanks , Jim Perhaps you can find an axle ratio or code therefor on the differentials of each car and then know for sure their respective axle ratios. I will surely try and check that, the tranny in the 280 is not all that great as it is, so it would be a blessing if I could use that tranny . Keep in mind, I have that whole other 116 to take parts from, including the rear end. Jim what about the fuel system? the 450 has continuous injection system and doesn't the 6 cylinder have electronic? I doubt that will make a difference, but I am pretty sure that this 280 has cis also. Even the brushes and the ignition box are the same. The fuel lines line up as well. |
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