1250cc heads. How much more can they flow - Page 3 - 1130cc.com: The #1 Harley Davidson V-Rod Forum
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Old 12-04-2012, 02:38 PM   #31
ohioVROD
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We have proven this numerous times that 53 to 58mm is a difference not mainly in HP but more TQ and the rate of the climb to redline. Heads done properly with Stage II cams and tuner will walk all over a stock setup. Is it worth it that is up to you.

A destroyer crank in a 1130 makes it a 1177 and in a 1250 it will be a 1302. You will need to do a little clearance in the bottom case half where the rods come around. A 1302 with heads and cams will scoot no doubt. I have one with over 7k miles on it and I beat the tar out of it.
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Old 12-08-2012, 07:01 PM   #32
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you can have your crank stroked 1/4 in by falicon for less than the 1/8 in stroke destroyer crank... a big race motor could use 64mm tb`s ....a stock 1125r buell has 62mm tb`s...it would have to have a very good cyl head and big cam to need tb`s that big...
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