Widetrack Driveshaft Flanges

[greg]

Whilst wrenching on Big Steve's car over the past week we encountered a problem with two different sized Driveshaft Flanges.

It appears that the 1988 model zook that Big Steve is doing up, has different sized driveshafts flanges (smaller bolt pattern) to that of the left over driveshafts that Big Steve had sitting around off his 199x sierra.

Does anyone know what year these changed? I'm going to have a guess and say that if your widetrack sierra has plastic flares - then it has the smaller flages too.

Any ideas?

Thanks

[greg]

Additional Question:

Are these smaller widetrack flanges the same as narrow track ones? i.e. are they interchangeable?

Thanks

[camskizook]

I know that the 1 litre and and 1.3L NARROW track have the same flanges.....it may be that he has widetrack housing housing/axles, but a narrow track (3.9) diff in there? possibly?

[greg]

I know that the 1 litre and and 1.3L NARROW track have the same flanges.....it may be that he has widetrack housing housing/axles, but a narrow track (3.9) diff in there? possibly?

Dunno - it was every flange on the driveline that was different (i.e. front diff end, rear diff end, jackshaft, both output flanges on the x-fer case too i think... So i'm pretty sure that the whole car is different.

I think big steve has basically replaced them all so that they are all widetrack (the bigger type) flanges (because he put in the 3rd members from his original zook and the x-fer case i think)

[N*A*M]

my plastic flared 7/1988 wide track had big flanges

[greg]

my plastic flared 7/1988 wide track had big flanges

Big compared to other widetracks of different years? Or big compared to narrow tracks?

[OVERKILL ENG]

Greg we struck the same problem with Tims Zook. I think the first of the widetracks had the smaller flanges the changeover seems to somewhere during 88.
SAM

[bigsteve]

As it stands now every flanged has been changed to the larger type bar the jack shaft where it bolts to the tcase.