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Posted by Gary on Tuesday, May 27, 2008 at 11:13:24 :
In Reply to: NP540 in a W300? posted by PowerMan on Monday, May 26, 2008 at 11:05:30 :
Here is a Webshots link to a GM 540, but they look the same. I have a 57 NP540 that I am putting in my 64 TWPW. The bell housings are usually drilled for the 3,4 and 5 speeds. 2-3 of the holes are the same as the 435. It's just a bolt in deal. The 540 input shaft is a bit shorter than the 435, so I may need an extented pilot bearing. You can also use a 12" clutch with the 318 Poly bellhousing. There is one of the TW guys that has a lot of photos of the conversion... I'll see if I can find a link. The splines of the input shaft is larger (1.38), but the pilot shaft is the same at .75". You need a 10 spline 1.38 clutch. Ya the ODs are very hard to find, but wanted closer ratios with the direct for towing.
Gar