Corvette C4 angle?

[Tiger]

Is it right to suppose that the halfshafts on my Dana44 c4 corvette rear are to point straight out (seen from above), or should I point them a some degrees rearward rearward to be sure to always have an angle at the u-joints?

thanks!

[MrQuick]

Hi Andre,
how ya been?

I had 2 up on the 4 post rack for inspection for the same reason. It seems factory had a slight angle rearward (3-7 degree). Most likely for u joint life and NVH. Are your half shafts stock or narrowed?

[Tiger]

Hey man, its been a while

Its an 85 rear and its not narrowed.
To me it looks like hub is to be 1 3/4" rearward compared to the center section.
I havent measured any degrees though.

[orphancars]

Is it right to suppose that the halfshafts on my Dana44 c4 corvette rear are to point straight out (seen from above), or should I point them a some degrees rearward rearward to be sure to always have an angle at the u-joints?

thanks!

Andre/MrQuick,

I'll be out in the shop to check this, but doesn't the lower link that goes between the diff and the hub assembly set that angle for you?

thx,

-jeff d

[Tiger]

Thanks Jeff,

Unfortunately it doesnt as you are able to move the hub several inches if its not set to the car.

I appreciate your effort!

[orphancars]

Just a follow-up..........

Set up the suspension on my chassis table, and there is indeed a ~3 degree sweep rearwards on the suspension. The lower control arm that goes out from the diff to the hub locates things pretty solidly. I didn't notice any movement/deflection fore/aft. Comparing all my other measurements that I took from a stock C4, I'm pretty sure that I got everything assembled properly.

Like I said, maybe I'm missing something, but it looks like there is a little rearward sweep to the halfshafts. That intentional misalignment coupled with the slight (~2 degree) "droop" in the halfshafts is all probably there intentionally to keep the u-joints happy.

-jeff "reverse engineering is fun!" d

[Tiger]

Cool Jeff, thank you!
I appreciate it