Axle question.

[69Rcode_Mach1]

Well guys the car is running and I have realized how badly gears are needed to get this thing to 7500rpms. With the 2.75's 1st gear can get all the way to 75mph and this is with a freaking 5 speed. I don't need to go 300mph, so I am remedying this. Ronstang is helping me assemble a 4.30 geared, detroit locker, daytona bearing, 31 spline, Nodular Iron 3rd member for my Mach. The only thing we have left is to get some nice strong axles to hold up. I don't want any weak links in the car. My question is that I have been looking for some Currie and Moser axles but they are harder to get and cost a lot. I was wondering if Superior makes quality products? They are sold on summit and are made to whatever length you like. The axle splines are rolled and they are made of a hardened alloy. They look like a nice strong axle, but I wanted to make sure they are good. Anyone using these axles or heard about them? At $110 an axle sounds like a good deal.

 

[TOM B]

Superior makes a very strong axle, Unless your running 700 or above hp and launch at 6000 rpms with nitro you should be ok.

 

[dennis112]

Well guys the car is running and I have realized how badly gears are needed to get this thing to 7500rpms. With the 2.75's 1st gear can get all the way to 75mph and this is with a freaking 5 speed. I don't need to go 300mph, so I am remedying this. Ronstang is helping me assemble a 4.30 geared, detroit locker, daytona bearing, 31 spline, Nodular Iron 3rd member for my Mach. The only thing we have left is to get some nice strong axles to hold up. I don't want any weak links in the car. My question is that I have been looking for some Currie and Moser axles but they are harder to get and cost a lot. I was wondering if Superior makes quality products? They are sold on summit and are made to whatever length you like. The axle splines are rolled and they are made of a hardened alloy. They look like a nice strong axle, but I wanted to make sure they are good. Anyone using these axles or heard about them? At $110 an axle sounds like a good deal.

I bought a set of Superior 31 spline replacements for my 65' from Summit. Nice units with good fit-same length as stock. The splined area is longer and there is no taper. Mine were .100 larger in diameter than the old 28 spline factory jobys.

 

[chepsk8]

That's alot of gear! Is your main purpose to race or street? Reason I say, os you'll be spinning that stroker very fast, and these "long" motors don't enjoy that as often.

When I had the SCJ, I had two pumpkins, same 31-spline set-up, a 3.25 for the street, and a 4:10 for "fun". The swap is not too hard to do, and it made the car a true dual-purpose monster.

 

[69Rcode_Mach1]

The car will see time at the track, but not that often. It will mostly be a weekend cruiser. The problem is that with the cam the car is lurchy down low and takes a long time to pick up. Ronstang is running a similar combo with less cam and compression, and they are running 4.30's after experimenting from 3.70's-4.56's and these worked the best. I am not so much concerned about mileage just the power and how enjoyable the car is to drive. It is fun but it is a pain to have to rev up a ton and let the clutch out real slow to keep it from dying in 1st gear, and then wait till 20-30mph for the powerband to pick up. Plus I can't get into 5th gear with the gearing I have right now until atleast 60mph otherwise the car will start lugging. With the 4.30's the car will be cruising at around 2200-2300ish rpms which is just fine with my .63 overdrive ratio. Basically I want the car to run like a raped ape, and 4.30's will be necessary if I want to get it to 7000-7500rpms quickly.

 

[chepsk8]

Very true, and I do see your reasoning. Another point in ytour corner is with the 3.55's in my FFR, at 70 I am taching 2200, and it feels like crap, out of the power band. On the track, I wish I did have more gear, but the 3.55's are good on the street, tied in with the 3.07 first on the T-5, it scoots quick!

 

[69Rcode_Mach1]

Mine has a 2.95 on the first gear, and the overdrive is a lower ratio which will allow me some more gear. We will play with it more here and there, a gear change is easy, but the 4.30's should do fine. If not I can always swap, the important matter right now is the axles.