Clutch weight questions

[NBDuckHunter]

Hi folks, I was thinking of putting 4 450 weights in my 660 to gain back a little low end that I lost when I installed my 27" bugs. I have 2 questions, how much will I gain (low end) by doing this? and how much top end will I lose (mph or kph)? Thanks,

[Mad Mike]

well on my 700 I lost 7/8 mph on top when I did 4-450 and 4-700 weights. the bottom end gain wasn`t all that. If you do the weight swap and add 1-1.5 mm shim then you will gain some low end back. To save your self some time and work get a hold of coop45 and have him work his magic.