RPM drop

[Roger Zeedyk]

Need help!!!
This will be the first time ever pulling with a manual trans. Always had auto. If a guy leaves the line at say 5000 RPM, how much will his rpm's drop when he lets out on the clutch on a good track? 1100 -1200 HP at the crank. Will you regain the rpm drop and get back to 5000 rpm as you go down the track?
Thanks Roger

 

[nwpadmax]

Depends on how much slip your clutch will tolerate and how much grip you have!

 

[Roger Zeedyk]

clutch will be fine. big 4 disk. Tires either 33 or 35 STS Truxs

 

[nwpadmax]

Well Ok think of it this way roger:

If you put all tires at 65 psi, you're going to do a sit-n-spin, but there will be no rpm drop at all!

If you put all tires at 25 psi, I bet you have some RPM drop!

Somewhere in the middle lies the answer.

 

[Roger Zeedyk]

I will have the truck set up to hook up good. Tires will be set for best traction for the track conditions.

 

[joefarmer]

I've seen ~1000 rpm drop once you get under load, but that's with inline-style engine torque. I would think depends on the torque requirements of the track too.

 

[Kman9090]

depends on how heavy the sled is also.