Does getting the axles gun drilled or get lighter Axle flanges help performance?

Moser does that stuff for a price with their axles. Here is the link.

http://www.moserengineering.com/mose...ecustalloy.htm

 

woa, ive never heard about that. wouldnt that make it more likely that youd break an axle?

 

It seems like they only offer it on the 40 spline axles. So I guess those axles can handle it. But I have no clue...Anyone else know?

 

Does it help power? Sort of. It lightens up rotaing parts, which makes the drivetrain more efficient, and translates into a quicker car.

However, don't ever run gun drilled axels in anything but a race car. If you read carefully you will see the maximum vehicle weight for the gun drilled axels. A typical street or street/strip Camaro or Firebird is way heavier than these recommendations.

The problem is that the rears that most 3rd gen cars run (10-bolt, 12-bolt, 9-bolt, 9", and even the Dana 44) all use the axel to support the vehicle's weight. Consequently the shaft is loaded in compression as well as shear, which makes life very hard on the shaft. The only way to eliminate this concern is in a full-floating type axel where the axel shaft does nothing but transmit power. The problem is that full-floating axels are very heavy (typically found in 3/4 ton and up trucks), which is why most drag racers don't run them (except in extreemes like Top Fuel).

 

pick up your wheel with the tire on it..... its probly heavy...

look at your driveshaft, flywheel/flexpate, brake rotors, ect..


theres alot of rotating mass that can and should be eliminated before going to extremes like drilled axles.

even more if you start to include unsprung weight.

 

Yes, exactly. An aluminum driveshaft will probably save you the same amount of weight, and costs less, plus it's safe for a heavyweight car.

Be careful with lightened flywheels though. You can end up with idle instability problems. Don't bother to ask me how I know that.

 

i know about it from hanging around sports car nuts growing up.

if you go too light on the flywheel on the street, the car will stall ultra-super-easy. theres no "stored" energy... so while the motor revs quickly, you have to give it more gas and ****** the clutch..

a racing clutch and lightweight flywheel combo is one of thoes "sounds cool, but works like crap on the street" setups that you have to watch out for.

 

Thanks for the info guys...that clears it up