TySy based yukon?

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10-16-2009, 07:50 PM
EpicRasta

TySy based yukon?

hey guys, i have a noob question. I've been doing a lot of research on modding my 94' 2dr yukon. i've been toying around with the idea of making this truck into a quick AWD truck with reasonably priced parts. i was thining about doing a 4l80e swap with a manual transfercase from at 2500HD. but then i forgot all about the syclone until recently. Is it possible that some of the parts from the syclone i.e. front and rear diff and transfercase, will fit in the big rigs?? i know the transfercase is pretty robust and found in AWD astro vans and bravada's...shouldn't be too hard to find

please dont bash, i'm still new to all this on the domestic side....i'm used to imports and turboed 4-bangers
10-16-2009, 08:39 PM
Mang213

Youve got the right idea, especially for creativity, but a conversion like that would end up being kinda pricey. And I dont know if Id call the driveline parts from the SyTy's 'robust', but they might be able to deal with the weight difference
10-16-2009, 08:41 PM
George C

you would be much better off using the parts from a denaili or silverado ss
10-16-2009, 09:31 PM
GasGuzzler

Not a Denali....SSS or Escalade....or the Sy/Ty T/C...don't use a Denali T/C unless it's from a Sierra Denali or a 01-02 Yukon Denali.
10-17-2009, 09:59 AM
George C

Quote:

Originally Posted by GasGuzzler

Not a Denali....SSS or Escalade....or the Sy/Ty T/C...don't use a Denali T/C unless it's from a Sierra Denali or a 01-02 Yukon Denali.

you just said not to use one from a denali but then said if its from these years and vehicles. what gives?
10-17-2009, 10:04 AM
GasGuzzler

Just being more specific. Since the C3 and Sierra Denali are the original SSS they have the right one. The 03+ YD like mine has the open type that's brake modulated.
10-17-2009, 10:21 AM
George C

so denali does have the right one as previously stated
10-17-2009, 12:04 PM
zeake

It is s great idea. A 4l80 will work with the awd transfer you just have to swap out the input gear. The input gear can be purchased from a guy "time2kill" I think on Silveradoss.com .I am not real sure about the front diff for your application. Maybe 99 and earlier denalis were awd. I am not sure.
10-17-2009, 03:04 PM
Frenchy

Quote:

Originally Posted by Quik

so denali does have the right one as previously stated

Sierra Denali's do, Yukon Denali's don't.
10-18-2009, 11:10 AM
GasGuzzler

There are a lot more Yukon Denalis out there than Sierra Denalis and there are a lot more 03+ than the older ones so in most cases commonly available Denali cases would not be the desirable type.

BTW, the OBS 99-2000 Denalis AND Escalades have the older style NP8 selectable 2HI/4HI/N/4LO not AWD.