a couple lift ?'s

[camok10]

1-will i have to lengthen the filler neck on my 89 k5 if i do a 3" b.l.

2- im assuming they will work but will the break lines off a 86 k5 work on an 89

3- will i need a conversion joint to go from a 10 bolt to a 10.5" 14 bolt if i decide to run the 700r4 for a little whil

4- same as above but to a 8 lug 44 instead

5- how much will i have to move the cross meber going to 350/205 combo from a 700r4/208

[Mudbuster]

1: yes
2:should
3:yes
4:if your talking about the front then No
5: not sure

[camok10]

thanks, and yes on 4 im talking about the front axle

any one know what u-joint i will need to run the 14 bolt out back??? if not its fine i just will swap in the 350/ 205 at the same time and just use the shafts it has

and on 5 i will go look i just rembered my donor originally had a 700r4 in it

[Mudbuster]

on the rear ujoint just go to a real parts store not autoslut and tell them what year the axle is and what year the driveshaft is and they should be able to figure out the joint it's real easy if you've got the part#'s and book right in front of ya..

All they do is look up the joint that each one takes then go to the back of the book and there's a guide that tells them what joint those to together make...  HTH

[7387chevynut]

On the Np205/350 turbo.....................the 350 should be very close in length to a 700R4........the 208 and its adaptor............are gonna be close in length to a Np205 and its adaptor( the 208 & adaptor might be alittle bit longer though)...........but you really wont know until you hoist it up in there....either way you can drill out the holes. A quick way to tell, is measure both trans/T-case setups as they are bolted together......that will tell you the difference in lenght

Also keep in mind..........GM used 2 different Np205s 69-78 with knuckle rear yoke......and 79-91 versions had a rear slip yoke.....the slip yoke version will be longer just because of that fact.

I'm just assuming you do not have the driveshafts that came with your 350/205..

If you have a slip yoke rear Np205........then your current driveshafts will work..........but if its got the knuckle rear yoke, you'll have to have a new rear drive shaft made. 

Your front driveshaft should be the saginaw style (has 2 cv joints....and round rear bolt on flange) that will work on a 78-up 205s.......but if your 205 has the pre78 front knuckle style.....then you'll have to swap it out, or get the spicer style front driveshaft from a 77-back gm 4x4.

On the rear U joint...........what they sell is a (3/4 ton....1/2 ton U joint)........the 3/4ton portion fits your axle yoke.......the 1/2 ton portion fits the driveshaft.

[camok10]

thanks
and it is a s.y. 205 and both are in running driveing trucks just the 86 is to far rusted out to save with 3/4 ton axles and the 350/ 205 

ill put up pics of the 86's tub in my build thread tommorow