TrendSetter

Pinion Angle - Wolfe Race Craft

theres even pictures

walledition

iTrader: (3)

Yes its the 4l60e crossmember converted to fit 4l80e

walledition

iTrader: (3)

Ok i think i found my confusion here, i got confused thinking pinion angle was the angle of the differncial and since i had it facing down -2.5 now i tought i was doing great

So correct me if im wrong but my pinion angle is at -4.5 right now
Driveshaft is -2
Differencial is at -2.5
Total: -4.5




Before without the shims:
Driveshaft was 0
Differencial was at +5
Total: +5

I used to have a really bad pinion angle :s

walledition

iTrader: (3)

Could u please write down how u calculate that? i know i have the link open u put there but i dont get it, i just dont get it its confusing for me

walledition

iTrader: (3)

This will be easier, i fliped the same picture in the website horizontal so that we see the picture from the same side that im taking measurments from
Wheres is my mistake? how can it be -2 and not -4.5?

blown02408

iTrader: (4)

The rear u joint working angle is now 4.5 degrees and you front u joint working angle is 4 degrees which explains why you don't have any vibration, but the angles are still excessive. Try to get them to around 2 degrees front and rear by shimming the trans mount and using a smaller taper pinion shim.

TrendSetter

i was wrong so i deleted my post as soon as i realized. -4.5 is correct.

walledition

iTrader: (3)

I made a drawing with my angles, i have negative 4.5 differential/driveshaft and negative 4 driveshaft/transmission and your saying thats the reason it doesnt vibrate, i wana learn here and know for the future: what would happend if one of them would be positive? would it vibrate? or as long as u end with the same numbers?

blown02408

iTrader: (4)

Actually the way it looks in your drawing above it should vibrate like crazy. Not sure why I was envisioning the trans/ driveshaft angle the other way around, or positive.

blown02408

iTrader: (4)

Equal and opposite is what you want