Aluminum driveshaft rwhp limit

[RECHRGD]

When you see that a maximum of 500hp is recommended for a 3" diameter driveshaft, are they referring to rwhp or crank hp?

[Cooter]

I assume the RWHP thing didn't become popular till a few years ago, so they most likely are talking flywheel HP.

[RECHRGD]

That's what I thought.  Then on other forums there are guys bragging that they run them with over 600rwhp and slicks with no problems.  I'm not quite at 500 flywheel hp and don't run slicks, so should be fine for me either way.  Just would like more of a cushion...

[BSB67]

That's what I thought.  Then on other forums there are guys bragging that they run them with over 600rwhp and slicks with no problems.  I'm not quite at 500 flywheel hp and don't run slicks, so should be fine for me either way.  Just would like more of a cushion...

It is a gross simplification to assume that all aluminum drive shafts are the same.  Not all aluminum is created equal.  Not all aluminum drive shafts are created equal.

With that said, I think that it is unlikely that a guy is staking his business reputation on the line for his "500 hp" driveshaft that fails at 510. 

[RECHRGD]

That's what I thought.  Then on other forums there are guys bragging that they run them with over 600rwhp and slicks with no problems.  I'm not quite at 500 flywheel hp and don't run slicks, so should be fine for me either way.  Just would like more of a cushion...

It is a gross simplification to assume that all aluminum drive shafts are the same.  Not all aluminum is created equal.  Not all aluminum drive shafts are created equal.

With that said, I think that it is unlikely that a guy is staking his business reputation on the line for his "500 hp" driveshaft that fails at 510. 

Agreed.  There is nobody local here that builds them.  I found a local company that has an outlet in SLC Utah that builds them.  Ordered one and it should be here on Friday.  The local guys weren't very knowledgable on them.  The pricing was competitive, so we'll see.  Getting it mostly for my long going vibration issue anyway.....

[BSB67]

If this is for the car in your pic,  I wouldn't worry about it.

[RECHRGD]

If this is for the car in your pic,  I wouldn't worry about it.

So, my car looks underpowered and not worthy?   

[cudaken]

If this is for the car in your pic,  I wouldn't worry about it.

So, my car looks underpowered and not worthy?   

 

I was wondering that my self! LOL I think it was more because of the tire sizes and stock looking suspension. Or maybe BSB67 does not like Yellow! 

[BSB67]

If this is for the car in your pic,  I wouldn't worry about it.

So, my car looks underpowered and not worthy?  

Did not mean to offend.  Probably could have chosen my words better.

Car looks great.  Runs very well too.  I like it when a guy takes his muscle cars to the track to see what it will really do.  And the reality is that most guys that have street/stock looking cars like yours wont run your numbers. Your car can run in the 12s easily by just tuning and playing with what you have for the most part.  My hat is off to you.

[RECHRGD]

If this is for the car in your pic,  I wouldn't worry about it.

So, my car looks underpowered and not worthy?   

Did not mean to offend.  Probably could have chosen my words better.

Car looks great.  Runs very well too.  I like it when a guy takes his muscle cars to the track to see what it will really do.  And the reality is that most guys that have street/stock looking cars like yours wont run your numbers. Your car can run in the 12s easily by just tuning and playing with what you have for the most part.  My hat is off to you.

No offense taken, thanks.  Just ribbing you on your wording...

[oldschool]

I use an aluminum driveshaft in my 70 charger. I had it made here in town.  I use 1350 spicer u joints with it, never ever a problem. mine made 707 hp at the wheels....

[RECHRGD]

I use an aluminum driveshaft in my 70 charger. I had it made here in town.  I use 1350 spicer u joints with it, never ever a problem. mine made 707 hp at the wheels....

Well then, I guess I'll have no worries.