Left Upper Bar.

[Kevin20ump]

I am running a 18 1/4 left upper bar on this Rocket. What is does 16 3/4 left upper bar do?

[HuckleberryB4]

It will pull the top of the birdcage forward and alot of indexing. It will put alot more bite in the car, change the ride height and you will probably have an issue with bottom bar clearance when the rearend rolls up. I wouldn't recommend it. What exactly are you trying to accomplish?

[zeke23z]

Tried it with my crate car made it tight,it only worked when track was very slick,if you lookin for some drive try it

[Kevin20ump]

I am trying to tighted the car up getting in the corner, off the gas.

[bwels25]

short left upper is for more drive quicker. To tighten going in we lower right lower bar, stiffen rr spring, roll rr ahead. Rocket Blue Front

[Matt49]

Try lowering your lower right bar on the frame. This will increase loading of the RR on entry off the gas and tighten up your entry. If you have to go really far with this adjustment you might need a stiffer RR spring.

[C10]

Huckleberry, I hate to disagree with you, for the simple reason is Rocket makes a shortening bracket for the LUB, it will not in fact do any of those things, just gives you more instant reaction. Some guys like it, others dont. We run the short LLB and standard upper on our black front. Your car being newer probably uses the 15 LLB already tho.
Kevin, if you are lookin to tighten yourself in, you can try riding the brake with your foot on the loud pedal, it keeps the car on the bars. When you let off the gas all the way, the car crashes down, and whips the tail. My driver had this issue the first part of the year. The other thing we did was to move the right side bars at the chassis inward , so when the body rolls the bars are now straight with the chassis, it seemed to have taken our loose issue away and we can finally get too tight with a 225 on the RR

[Jim11h]

surprised

nobody said the obvious, stiffen the LF spring. 650-750 area.

[jedclampit]

nobody said the obvious, stiffen the LF spring. 650-750 area.

Good advice (700 is the most I ever used in a latemodel)...softening the rf helps also, as well as less static bite in the car and less compression @ the lr shocks.