advice on gearbox

[ffred]

Hi,

My car is a 64, about 640kg. I'm building a 2276cc with MS230, raptor cam, 48IDA on it.
The engine must produce 230hp around 6500rpm and 26daN.m around 5000rpm. I'm planning to use it for dragstrip with MH slicks 6/26/15.

Which kind of gearbox do you recommend to handle it with reliability ?

Thanks

Fred

[dangerous]

My advice would be to run a bus box.
You can get a bug box to work,
but the higher maintenence will wear you down.

[Bruce]

, about 640kg. I'm building a 2276cc with MS230, raptor cam, 48IDA on it.
The engine must produce 230hp around 6500rpm and 26daN.m around 5000rpm. I'm planning to use it for dragstrip with MH slicks 6/26/15.

While those are contributing factors, the most important one is missing.  That is YOU!  Some guys can blow up a gearbox with a stock engine, while others can make a semi-stock gearbox survive with over 300hp. 
What kind of driver are you?

[ffred]

On the road, i drive gently.

On the strip, i would say that i preload the trans before starting, and i sometimes floor the throttle while shifting.

In my previous engine 2276cc, FK45, 42x37, 180cfm, 45DRLA, i didn't have any trouble with my stock case gearbox 3.78/2.06/1.48/1.12 4.12, superdiff and poor man posi equipped. I ran it with cold slicks (no burn out).

For the new combo, i suppose that my gearbox would not handle the abuse of torque and power. But it's my opinion.
I would like to have a reliable car. Not one which break the trans on every race. I would like to perfom 1.6s/60ft.

Fred