The thing about double pumpers is when you whack it WOT, you get all 4 barrels.
If you do this at a dead stop with an 1800 TC, and 2.76s, and it doesn't spin, you are almost guaranteed a big fat bog. Now with a 2400TC and 3.55s, she is almost guaranteed NOT to bog, and you will have instant rpm. As you release the throttle a little, first the secondaries will begin to close...... so you can control the severity of the wheelspin by dialing out throttle. This makes controlled sliding and drifting possible, and also restarting spins at speed.
The thing about VS carbs is when you whack it WOT, from a dead stop,you get just 2 barrels. If you do this with an 1800TC and 2.76s,you will have to wait for the secondaries to open. Maybe a long time, since it ain't gonna spin until the Rs get up a little, say around 200/220 ftlbs or something like 2200rpm, so wait it out, this is about 22 or more mph. Then they will finally be open, hopefully all the way; but by this time it's doubtful a teener can spin the tires.
But again, with a 2400TC and 3.55s, you have enough TM (Torque Multiplication) to initiate a spin from a dead-stop, and so the Secondaries will open, allbeit not as rapidly as a double pumper.But if you back out of the throttle, they will close faster than a DP, and you will have to wait again, just a bit, for them to re-open. But if your wheels have stopped spinning, it's doubtful that you can restart the spin. This makes drifting and sliding and fishtailing practically impossible unless you keep it floored and work the brakes, and that only works until the brakes puke. All-in-all very unsatisfactory and sometimes downright embarrassing, like when you have a car-full of men totaling an extra 500/600 pounds; just fogetabowdit. Or like halfway thru a sliding corner and for some reason you have to lift a bit. Now your steering is close to full-lock, and as soon as the tires stop spinning, you are off-roading, and hopefully just in the weeds. On two wheels this would be "high-sided", and usually ends up with flight-time and personal injury.
Like I said, I wouldn't buy one on purpose. They are ok for straight-line work, and a lil extra in passing gear.
