Rearend Question

[JustAddDirt]

yes late models can do that as much as the RF hits the track.
Rocket welds a flat tab on there don't they?
I think a tab with ears on it would be better in that application.
Rockets are moly, but are not tig welded, they are mig welded, just with correct wire.
(unless he has changed his welding processes) or something special was ordered.

[xxxmod]

Any difference you feel would probably be because the 9 inch and the quick change
use different length axles.

[7uptruckracer]

I'm sure that has some bearing, I know the QC and 9" Pinions are oriented differently as far as how it makes contact and left to right and front to back wise. I know the QC can absorb more torque and HP because your running it thought that intermediate shaft. I'd just count it all as a shove mount it all at the same points redo your Jbar height and see what your bottom feels and adjust from there, dirt is never the same any time its out anyways

[4coil]

Thanks folks for the valuable info..........................A lot of goodstuff here!

[el paso mod 19]

If a 6.0 gear was perfect for 9", what ratio do I run in QC? I've been told they're not the same.

[JustAddDirt]

I would start with a 6.03

[not clamped up]

I would start with a 6.03

JustAddDirt gives some of the best advice I see on here,I just wanna add to me alot of people have ended up with the 411 Ring and pinion in there quick change.If so you need to add 40 points to the gear you ran in the 9 inch.

[el paso mod 19]

Thanks to both of you.

[1Blacksheep]

9" drives off the LR
QC drives off the RR
have to add a smidge more wedge to compensate
Pinion is about 2" lower on QC. generally you have to move back of motor down a bit to correct driveshaft angle.

Agree completely . The balance we try to tune into a car has been a little harder to hit the sweet spot with the QC for this reason. There is more than one reason this JAD Cat wins a lot of races.