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Re: Lightened ring gear, riffle drilled and star flanged axl
 

If your looking to refine the combination and get what ever gains possible, then those things are well worth trying for the little cost they ad at the time of purchase.

Star flange axles, I assume you mean Moser. Don't care for them due to rather crude machining and lack of attention to detail. Strange and Mark Williams do a better job in that area.

That said, we have a customer with an Outlaw 10.5 car that had Moser 40 spline gun drilled axles withe star flanges that never once twisted or broke an axle. Car ran 4.0's in the 1/8th at 2700 lbs and 60' 1.00 on a regular basis. So strength is not a concern.

Back to back testing, I have not and don't know anyone who has.

Re: Lightened ring gear, riffle drilled and star flanged axl
 

IMO If you need to get weight out of the car this is an excellent way to do it.
Also if you'd like to move weight around what better way than to turn unsprung weight into sprung weight.
The lighter the unsprung weight the softer the shock the better and more consistent the bite.

That's the way I look at it.

Re: Lightened ring gear, riffle drilled and star flanged axl
 

no ET between lightened ring gear and standard in my 3144 lb. Super Stock car with Mark Williams Ultimate Hi Torque gun drilled axles, and aluminum spooled "Pro Stock" 3rd member.

Re: Lightened ring gear, riffle drilled and star flanged axl
 

Thanks,... I think my money would be best spent on a metric, over the th350..

Re: Lightened ring gear, riffle drilled and star flanged axl
 

I do not know how to search past posts, but this was gone over extensively on this site at one time.

I believe the concensus was no noticable difference

Re: Lightened ring gear, riffle drilled and star flanged axl
 

save it a good one is the same

Re: Lightened ring gear, riffle drilled and star flanged axl
 

Or a jerico! Lol.

Re: Lightened ring gear, riffle drilled and star flanged axl
 

I did do back to back test on steel (13#) vs alum (10#) driveshafts, zero improvement. In my case, I have a pretty low HP high RPM combination so if anyone would improve, I would have thought it would have been my car.I also have all the lightweight rearend parts. I really don't think there is any performance difference in any of it. That being said, if I were starting over, I would buy the lightweight stuff anyway. It just seems that intuitively it is better to have the lightest rotating parts regardless. At least it gives you the opportunity to run lighter or put sprung ballast in the car if needed.

Jim Caughlin
SS 6019

Re: Lightened ring gear, riffle drilled and star flanged axl
 

Diameter has a big effect. Ten lbs flywheel weight has more effect than ten lbs crankshaft or driveshaft weight. Axles? I can not imagine seeing anything. Another one of those "it can't hurt" deals.

Re: Lightened ring gear, riffle drilled and star flanged axl
 

On the subject of flywheel weight, reducing clutch and flywheel weight and diameter made HUGE improvements in my car. I would have to think that alum torque converters would have the same effect for the auto trans guys.

Jim Caughlin
SS 6019

Re: Lightened ring gear, riffle drilled and star flanged axl
 

Jim, I have heard mixed reviews about those. I'm told by a gentleman that runs a fast hood scoop SS car they can be worth as much as a tenths. A friend with a good, conventional SS car he saw nothing, but a much lighter pocket book. Might be related to RPM range?
I can't afford the five grand I was told they cost anyway.

Re: Lightened ring gear, riffle drilled and star flanged axl
 

I think that the Benefit would be so small. It would be hard to measure. There are a lot of good cars out there without any of this stuff.That being said, I think if you keep picking away at the areas mentioned, to lighten the car in all areas you can, especially unsprung weight, it can make a difference. It can make a good car a great car! Hard to measure, but sometimes that is the difference between qualifying or not at INDY.
I can tell you that our car has been one of these efforts. We have worked over the years to lighten up things we could afford. It maybe isn't quicker or faster in good conditions, but we can move weight around better and the car is more tune able to be good even in rough track conditions. If you think you can pick one of these things and make the car fly, you will be disappointed. If you are scratching out every Hundreth to be competitive, it might be worth it.

I don't think a bracket car would be worth doing it for the cost involved.

Re: Lightened ring gear, riffle drilled and star flanged axl
 

When I ran a stick in my car 7 lbs off the flywheel was worth 2 tents.

Re: Lightened ring gear, riffle drilled and star flanged axl
 

Wow what was the total weight before for your clutch assembly?,

Re: Lightened ring gear, riffle drilled and star flanged axl
 

Mike, that is a large enough radius to see something. An axle? Not so much.

Re: Lightened ring gear, riffle drilled and star flanged axl
 

I use to run a 11 pound aluminum flywheel in my 4000 lb 68 Impala 396/325. All the "experts" told me I needed to run a 30 lb flywheel to get that Chevy moving. Never had a problem with light flywheel. Car never bogged, left pretty hard. The "experts" most of the time were guys who ran Automatics.
I also use rifle drilled axles, star flange too, same rear in my 65 Impala now. I felt for the little extra wht not. Just my 2 cents.

Will Lamprecht I/SA 65 Impala in progress

Re: Lightened ring gear, riffle drilled and star flanged axl
 

I agree, lighter is better as long as you have a good clutch and spend the time testing. It is easier to make the car look pretty with some flywheel weight, but once you go lighter, and figure it out, it was quicker for us. The stickshift stuff is fun and way better than the 30 years ago stuff many recall.

Re: Lightened ring gear, riffle drilled and star flanged axl
 

That was going from a 20 lb steel flywheel to a 13 lb aluminum with a steel face. All old school clutch stuff from Ram.

Re: Lightened ring gear, riffle drilled and star flanged axl
 

I put a lightened ring gear in my Dana and did not see any ET reduction. Changed the ratio at the same time so not a real good test. All of my driveline stuff is real heavy. A hold over from my stick days.

Re: Lightened ring gear, riffle drilled and star flanged axl
 

It might be better to have the axle flanges drilled and tapped for two different bolt patterns rather than having them flanged. If you are on a budget, easier to find wheels.