10bolt to d44 conversion

[SUB-ZERO]

I am converting my buddies Jimmy axles from 10bolts front and rear to 12bolt rear d44 front.(his 10bolt rear broke a spider gear and the 12bolt we got has a different but better gear ratio).My question is this...the front driveshaft on the d44(from a 1977 K5) and front driveshaft on the Jimmy(1987) attach differently to the axle.The Jimmy uses straps and bolts and the K5 had u-bolts.How can I make this work?

 

[rick88blaze]

It should work just fine without any problems. I did this switch on mine almost 2 years ago. Both use the same u-joint, and using the u-bolts is better than the straps.

Rick

 

[bigjbear]

They should still both use a 1310 u-joint. Just hook the thing up. I swapped the axles on my '73 & '80 and had no problems. Same deal; D44/12B & 10B/12B.

 

[slowk5]

I think the 87 would have a flange type cv and the 77 should have a spicer type cv yoke.not sure what the year that they changed is.Just take a look i might be wrong.

 

[rick88blaze]

He can still use the same driveshaft that's in the Jimmy now. The only reason he might not be able to use it is if someone put different size yoke on the D44. A 10 bolt and D44 still use the same size u-joints if the yokes are stock.

Rick

 

[Leper]

Why are you taking the time to swap a 10 bolt for a 44? There is no real strength difference between the two.

 

[SUB-ZERO]

'Cause the 12 bolt and the d44 has 3:73 and the 10bolts both have 3:42.

 

[bigjbear]

Same reason for me, 10B/12B had 4.56s and a Detroit rear, the D44/12B had 3.08s 7 a L/S rear. (Both fronts open.)