General Technical Information
General Technical Information
SELECTING SWAY BAR RATES AND SIZES
We have over 100 sizes of Bars on the shelf. The length of bar is determined by adding 3 inches to the width of frame rails on the chassis. For sway bar wall thickness, we suggest you first look at our swaybar rate chart located in the Tech Section of this website. This will show you the rates for most of our sway bars. We also suggest you contact your chassis manufacturer for a starting sway bar.
ADVANTAGES OF SPEEDWAY ENGINEERING TORQUE TOUGH SWAY BARS
The OEM, flapper style, bar will work to a point on left hand turns. Under loose conditions, there's no load or control from the sway bar to the right rear. Our Torque Tough Sway Bar has these advantages:
- More precise ratings
- More sizes and rates available
- Works bi-directionally in both left and right hand turns increasing stability
REAR END OIL TYPES AND QUANTITIES
We suggest you use a good grade oil, 85-140 wt,. such as Mobil 1, which we use on our house car. Never fill the Quick Changes or Ford housings any higher than bottom of 3 in axle tube. We do install level checks, at that point on all our Quick Changes and Floater housings. On the Quick Changes this is on the right side bell and/or on the center spur gear case. On the Floater Housings, the level check is on the back cover.
HOUSING ORDERING INSTRUCTIONS
We will need the following information:
- The width from where the wheel bolts on to where the wheel bolts on — excluding the brake hats and wheel spacers. See the Rear End ordering info located in the Tech Section of this website.
- The type of Hub (Wide 5, GN, 2 in. Bearing, Mod Lite, etc.)and bolt circle you will be using.
- The pinion is considered centerline on all rear ends. We will need the length from the pinion to the left side and the length from the pinion to the right side.
CHECKING REAR END STRAIGHTNESS
Take the housing out of your car, leaving on the hubs, wheels and tires. Drain the oil. Set the tires on a couple of old rims or milk crates and spin the center. A bent housing will make wheel and tires have run-out or wobble. Less than 1/16 in. total or .032" per side runout is within tolerance and is OK. A straight housing will not have runout.
ADVANTAGES OF INBOARD HOUSING SEALS
The advantage of these seals is they keep the gear lube at the gear and there's no need to over-fill center with gear oil. We do recommend these seals for all housings. We sell two styles, the single lip and the double lip style. The double lip is more for housings when there is a higher degree of misalignment (tubes not on centerline). The double lips are also more fragile and care must be taken during axle installation. If the tubes are straight, the single lip is more than adequate.
END PLAY MEASUREMENTS FOR AXLES
Please see the Setting Axle End play on a Full Floating Rear Axle Housing located in the Tech Section of this website.
SPLINE ENGAGEMENT MEASUREMENTS
- Aluminum Spools — 1 1/2 inch
- Steel Side Gears — 1 inch
IDENTIFYING FLOATER/QUICK CHANGE HUBS
Please see the Snout Identifier located in the Tech Section of this website.