Just how much HP can the stock clutch handle before it's time to upgrade?

[viperrt96]

I think I know but I want to hear from the experts.

Here's why I'm asking

For the first time I think my stock clutch is slipping and it's only slipping I think under the spray. Oh by the way it's a Stock (LUK?) with only 3k miles on it. I was back at the track the other night and the car ran great but I'm still running low 11's and trapping 135mph. ***! My 60's were around 1.8's.

A 135mph trap speed should have me deep in the 10's.

If you take in my known rwhp(500) - No NOS - my car runs mid 11's at 125mph While my et may vary (11.47 to 11.9) my traps are very consistent!

Now here's where the NOS makes a different. I was running a 200 shot and the ET only improved a couple of tenths but I gain 10MPH on my trap. The car definatley moves at the end of the track. I'm starting to feel what I would say is tire spin but in reality I think it might be in my clutch. It is really hard to tell the difference. Not that I don't know what a bad clutch would feel like because it's not bad per say but I may be right at the limits of the clutch and it could be slipping. Here's another reason why I think that. My 1/8th mile is right at 7.5's and 100-99mph. No spray it's 7.6's and around 98-96mph

I know if I want to see the 10's (That's my goal) my 1/8th has got to be better than that.

On the street the clutch is not a problem. Traction is !

On the track where I'm getting traction (better) it might be time to get a clutch.

 

[99 R/T 10]

I have gotten into the 10's on a stock clutch(10.4), but was slipping all the way. It seems to hold up to 650-700HP, but after that you need to upgrade.

 

[plumcrazy]

rick (ricksrt10 ?) has a stocker in his 920 rwhp car and loves it

 

[viperrt96]

I have gotten into the 10's on a stock clutch(10.4), but was slipping all the way. It seems to hold up to 650-700HP, but after that you need to upgrade.

What was your trap speed on a 10.4 pass? And were you on drag radials?

My problem could also be the driver

 

[viperrt96]

rick (ricksrt10 ?) has a stocker in his 920 rwhp car and loves it

WoW ! 920 ! Does Ricks car see the track ? or is it a dyno kind of thing !

I got to get mine on the dyno soon but I'm betting with the NOS I got to be pushing 900 on the torque side and definitely above 650 HP at the rear. NOS cars usually make big torque numbers on the dyno.

 

[plumcrazy]

my torque number was 856 on NOS and no problem with a stock clutch.

risk DOES track it and drive it often.

 

[99 R/T 10]

Yep, it was on DRs and I traped at 138.86.

 

[DodgeViper01]

rick (ricksrt10 ?) has a stocker in his 920 rwhp car and loves it

Wow, I had no idea it was that high.

 

[BOOST ALMIGHTY]

I am new to Vipers, but not new to Big HP cars, and I am LOVING THIS THING. You can make TONS of Power and dont have to worry about everything around the car breaking.

Did I forget to mention how much I love my new car. HA

 

[Simms]

My stock clutch went on me at the track with just under 700rwhp. It did last a long time before it went. I know many guys that use the stock clutch with a lot more power than me. It will hold, I think the question is for how long and how it is used. Some continue to use stock clutches, they have a good feel, and are cheap compared to others. They may just change them more often.

 

[GTSnake]

My stock clutch went on me at the track with just under 700rwhp. It did last a long time before it went. I know many guys that use the stock clutch with a lot more power than me. It will hold, I think the question is for how long and how it is used. Some continue to use stock clutches, they have a good feel, and are cheap compared to others. They may just change them more often.

That's exactly my thinking as well. I can repalce my stock clutch 3 times for one of the exotic ones. For as little racing as I do the stock clutch fits my needs better and at a better price.