Will a np435 work
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Mountain Pass
Joined: Sep 2006
Posts: 157
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From: Plain City Utah
Will a np435 work
Hello everyone I have a 1967 bronco I am wanting to put a np435 off of a 351 m
I am not sure if it will work on my 302 or can I use my bellhouseing off of my 3 speed that is in there now. I know that there are 3 differant 351's the one that this came off is a 351 m , but the 351 w I think might work also. please let me know . Rick
I am not sure if it will work on my 302 or can I use my bellhouseing off of my 3 speed that is in there now. I know that there are 3 differant 351's the one that this came off is a 351 m , but the 351 w I think might work also. please let me know . Rick
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Joined: Oct 2007
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The trans will bolt directly to your Bronco bellhousing, but your D20 transfercase will not. You can use a 205 case with no adapters. Or you can use a 2wd NP435 with a fixed rear yoke and an adapter from JBG for the D20.
Here is a great article on the swap: http://classicbroncos.com/np435.shtml
Here is a great article on the swap: http://classicbroncos.com/np435.shtml
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Mountain Pass
Joined: Sep 2006
Posts: 157
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From: Plain City Utah
Thank u that really helps the NP435 an d20 came out of a bronco so everything should work thank u fo your help . By the way there are a few people I know who have a NP435 an d 20 out of broncos an want to sell them I will past the info on to anyone who wants it just email me . Thank you again Rick
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Sorry, Double post...
Last edited by bucketobolts; Oct 17, 2007 at 07:35 PM. Reason: Double post
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The case in the '80 is probably not a cast iron 205, but an aluminum 208. It is chain driven and pretty weak in my opinion. Also the narrow '67 frame will not allow the wide 208 to fit. You can fabricate a mount and modify the existing cross member to make the 205 work with the NP435. Though you may have to alter you drive line lengths because of the added length of the trans/transfercase.
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Posting Guru
Joined: May 2006
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From: Kingsport, TN
Not sure of the mounting - but a 435/205 combo is a pretty wicked deal and should be able to tackle anything if the rest of the powertrain behind them is stout enough. The U-joints may be the weakest links.
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Joined: May 2006
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From: Kingsport, TN
Not sure of the mounting - but a 435/205 combo is a pretty wicked deal and should be able to tackle anything if the rest of the powertrain behind them is stout enough. The U-joints may be the weakest links.
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Mountain Pass
Joined: Sep 2006
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From: Plain City Utah
Hey thank you for letting me know , what you mean the bronco has a 2.46:1 I know the 205 has a 2:1 I don't understand about the bronco having a 2.46:1. What will that make my bronco do . Rick
Posting Guru
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From: Kingsport, TN
4drf350 - Not sure about the "Bronco" but there are other gears avail for the 205 t/c, some as low as 4:1. If you want brute force and torque, look up a local off-road shop. A lot of off-roaders are converting to a 205 and something else or another 205 behind that one in their full-size trucks. The same direct drive for highway + brute power for hard-core offfrrroading. Look into rock crawlers, or the 4x4 / off-road thread (forum).
Elder User
Joined: Sep 2007
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From: new mexico
i want to do the same things to my 72 302 power.
have the option of 435 or ford t-18...
someone tell me which one to use.
rock crawler only use....wont really look like a ee when done but the frame etc will be eb. some of the sheet metal...
have the option of 435 or ford t-18...
someone tell me which one to use.
rock crawler only use....wont really look like a ee when done but the frame etc will be eb. some of the sheet metal...