Scheduled Appointment for 3.73 Gears & Driveshaft Install
 

To all the experts out there...

I'm getting 3.73 FRPP Gears and a 1 piece aluminum driveshaft installed in October at Evolution.

I don't need adjustable control arms for a 1 piece driveshaft or do I? I know I do if I get the car lowered.

Any suggestions and/or tips for me before I bring my car in for the "all day" install? I've never left my car with someone for that long period of time!

RE: Scheduled Appointment for 3.73 Gears & Driveshaft Install
 

No, you should not need LCAs for the DS. At stock height you should not have a problem with pinion angle, but they should check it neverless. If by some chance it needs to be adjusted, you'll need adj LCAs or adj UCA. Also, depending on what you're doing with the car, i.e., drag racing, LCAs may be beneficial to rid of the wheelhop and help you hook.

RE: Scheduled Appointment for 3.73 Gears & Driveshaft Install
 

It's my understanding that it is absolutely mandatory to have either an adj upper ca or lower ca's or the pinion angle will be stressed. One or the other but not both. The install may appear fine but without the adj. ca(s) there will be an issue.

RE: Scheduled Appointment for 3.73 Gears & Driveshaft Install
 

Well, I'd run that by the manufacturer of the particular DS. If the car is not lowered, there should not be any reason to adjust the p/a unless there are rubbing or vibration issues. Now if the person is serious about getting the most out of their launches during drag racing, they may want to look at dropping the p/a a degree or two. Again though, IMO it would be best to consult with the manufacturer.

RE: Scheduled Appointment for 3.73 Gears & Driveshaft Install
 

I know where Alex is coming from....There have been people that have installed a 1 piece DS without adjusting the PA. I would not recommend it if you race the car at all. The pinion angle HAS to change when switching the DS. How much the angle changes I do not know for sure. If lowered you will need adj something and it is recommended that you also get an adj lca or uca even if not lowered for the pinion angle just to be sure. You will spend a little more now or spend 2 times as much later.

It will also depend on the DS. If it is a spydershaft, or any shaft that replaces the pinion flange, then you might be able to get buy, but i think you will see more problems with any shaft using a adapter plate.

RE: Scheduled Appointment for 3.73 Gears & Driveshaft Install
 

I plan on getting this driveshaft installed from Evolution, so will I still need to get adjustable LCA's and/or UCA?

Evolution Performance - 3.5" Aluminum Driveshaft - (1-Piece)
$700.00

Evolution Performance, Inc. 100% aluminum Driveshaft. Weighs nearly 30 pounds less than the stock shaft assembly, decreasing rotational mass. 100% Bolt in, no need to replace pinion flange and recheck rear gear setup.
-3.5" inch diameter
-3.0 inch 23 spline coupler, with nearly 3.5 inches of spline engagement.
-Includes Dustcover to protect the splined section from dirt and debris.
-Includes all hardware, and necessary adapters.
-Installation requires only common hand tools and can be done in less than 1 hour[/align]
Ohh and later on down the road I want to lower my car 1'-1.5', but nothing too aggressive.

And, what about driveshaft loops? For a track, yes, but for the street?

RE: Scheduled Appointment for 3.73 Gears & Driveshaft Install
 

You'll need either or but not both if you go with upper you only have 1 adjustment point which imo is good in this case. Loops should be required by law if you ask me so yes put them on.

RE: Scheduled Appointment for 3.73 Gears & Driveshaft Install
 

Would this UCA be sufficient when I get the 1-piece driveshaft installed?

BMR Fabrication Adjustable Upper Control Arm
$175.00
The single upper control arm is responsible for maintaining pinion angle and preventing axle counter-rotation. This "3 link" style suspension is ideal for autocross and road race applications as it allows the most articulation possible with a solid axle. For drag racing, however, the single, centered link becomes a weak point as the arm is only one inch thick in the middle and made from light gauge, stamped steel. Our upper control arm is made from 3/16" CNC formed plate, TIG welded and gusseted completely around the polyurethane bushings. Available in Black Hammertone.[/align]
Model: UTCA019[/align][/align]Link: http://www.evoperform.com/shop/index...products_id=61[/align]

RE: Scheduled Appointment for 3.73 Gears & Driveshaft Install
 

Yep...that is a good one!

RE: Scheduled Appointment for 3.73 Gears & Driveshaft Install
 

I love it when a plan comes together;)