The only way you'll take him is if sucks as a rider, he misses a shift and has a crappy reaction.... other wise.... pull a spark plug wire on him! Then you would be more even.
A stock gsxr 1000 will make around 140-145 hp at the rear wheel. A stock Vmax will make around 105-110 at the rear wheel. Even a modified exhaust, carbs etc on a Vmax will only net around 118-125 hp at the rear wheel. Some have been lucky with as high as 130 hp at the rear wheel. Still well shy of a stock gsxr 1000. Add a pipe and fuel map etc and your making around 150-160 hp at the rear wheel of a 1000.
A stock 600 is more than a challenge for a Vmax. You will get them out of the hole if your lucky, but they will reel you in by the end of a 1/4.
About the only thing you can do cheap to make a substanial gain in hp on a Gen 1 Vmax is put a bottle on it and set it to 30-40 hp and call it a day. Then you'll be almost even up with a 1000 in terms of power output.
Even the torque is higher for the GSXR1000. They are right around 80 ft lbs. A good Vmax will make around 72-77 ft lbs. Al be it lower in the rpm range than a 1000.
A wet weight on a GSXR 1k is around 450-60 lbs. So its about 110 lbs lighter than a comparable Vmax. That alone right there is enough to spank the Vmax hard.
But its wheel base! The Vmax rocks it out with a 63 inche wheel base! GSXR 1K have a 53 inch wheel base. Thats like having a 10 inch stretch swingarm on a vmax. You better launch that sucker hard and use that advantage!
Launch that sucker at 3800-4200 rpm, roll the clutch out for the first 20 feet and twist the throttle as you do, when you have the clutch full out, your throttle hand should be pinned.
If you can't cut a good 60 ft, you'll be history.
My old GSXR 750 92 oil boiler would run right up with the fastest Vmax I ever owned. Both ran 10.80's. Thats old school 750... lol.
Todd
https://www.youtube.com/watch?v=4qXJIdeQEuU
If you know drag racing you would totally tell he was pulling me in hard. He would have probably passed me in the 1/4 mile, but had to left off due to not having leathers. He only had jeans on . His 1/8 mile was still faster than my 1/8. I just cut better lights and had better 60 ft 's than he did. I race alot and I can ride. Toss me on a 600 and I ll smoke just about any Gen 1 Vmax out there that is stock or close to stock, or even modified stock bore/stroke.
Bottom line... CHEAT....