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Feb 18, 2009 | 05:05 AM

pattergrub

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From: edmonton

front diff

so ive completed my v8 swap. Im running a np 205 t case. and i have detroit tru tracs front and rear. So i guess my question is this what are the wires and vacum lines on the front diff for??? are they necessary??? any help would be much appreciated

Feb 18, 2009 | 05:39 AM

WFO

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From: Fredericksburg, VA

Im guessing you have ADD. The vacuum lines operate the ADD. You can supply vacuum to one of the lines and you will have 4WD.

Feb 18, 2009 | 06:41 AM

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From: Longmont, CO

Don't even worry about it - you're gonna grenade that diff if you put it in 4WD with a V8 ... time for a SAS

Feb 18, 2009 | 07:03 AM

4Crawler

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From: SF Bay Area, CA

Or just permanently lock in the ADD actuator:
http://www.4x4wire.com/toyota/tech/add/

Feb 18, 2009 | 12:49 PM

pattergrub

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From: edmonton

yeah i know now that i can supply a constant vacum source for 4wd, thanks guys. SAS is in the future but i need it to work for now. that 4x4 wire link helps lots thanks again