Posted by Gary on February 25, 2000 at 19:58:01:
In Reply to: Re: 79 528I Auto trans- Will a 4HP22 Fit ? posted by Troy Rudolph on February 25, 2000 at 19:00:33:
:Thanks Guys!!
Here's my educated guess about how to do the conversion from 3hp22 to 4hp22.
: First find a good 4hp22. They were used in 5,6,7 series in the eighties and early nineties. You could get a 4hp22 from a 88 535i and I'm *pretty sure* that the driveshaft and all will fit.
: Next install an E28 speedo in your instrument panel. Jim Blanton told me that he has done this to his E12 so he can use a Getrag 280.
: Then, the special speedo drive from Metric Mechanic, install it, and hook it up to the new speedo.