Ok so i have a 89 v3500 with the th400/np205 combo. Bottom line is the trans is tired and runs hotter than hell even with two external coolers in combo with the radiator cooler.
I managed to pick up 2 complete setups sm465/np205 combos for 350$. I'm planning on doing the swap next weekend on my break from school. Question is, i know i need to change driveshaft lengths, not a big deal, but i already have a 4 inch lift in the truck and i had to make a 1.5in front driveshaft spacer for the lift.
My concern lies in the overall length of the sm465/np205 setup. The front driveshaft u joints are already borderline for my comfort when it comes to binding up when the truck flexes. I know the sm465 is shorter than the 400 and therefore a shorter tranny, moves the transfer case output towards the front of the truck, therefore making the front driveshaft steeper. if the combo is more than 1.5in (the length of my spacer) shorter than the 400 combo im concerned.
Could somebody measure the overall length of their sm465/205 combo from engine to bellhousing flange to center of rear output on the 205? I just want to put my mind at ease before i keep acquiring parts and get myself in a pickle during the swap.
o and any input/links to other swaps would be greatly appreciated. Thanks guys.
08-12-2010, 01:47 PM
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