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So how much would this kit bump the numbers on an 8v motor?
You don't see as many motorcylce big bore kits these days. It was a lot easier with carbs so maybe fuel injection is the stumbling block.
Well, somebody has to say it...."There ain't no substitute for cubes"
Or - There's no replacement for displacement.
The H-D motors have a huge array of aftermarket and factory direct, bolt-on kits available. Many people make big bore kits for the Big Twin.I am amazed at what the factory offers in their Screamin Eagle (SE) catalog now. You can buy a bolt-on big bore kit to take your 96-inch or 103 stock motor out to 110 CID without splitting the cases now for 1195.00.A friend picked up his CVO Ultra last Friday. It was already a whopping 110 CID and he had H-D bolt on H-D parts to take it out to 117 inches. He went whole hog(!) too. H-D offers several iterations of ported heads that are as cheap or cheaper than having a porter do the work. He went with the 117 (1927 cc) big bore kit, ported heads, roller rockers and a power cam, all bolt-on things from H-D. Their first dyno run showed 120+ HP and 125 torque at the rear wheel at about 5000 RPM. He is breaking it in now before having the final mapping done to squeeze a bit more out of it. He had already installed Screamin Eagle (SE) gas-charged cartridges in his forks and SE rear shocks. I have to really work to stay up with him on my Stelvio! In fact, in a direct top gear roll-on, the H-D will walk away from the Guzzi!I'm considering making my Super Glide a 110.
Look at the specs of the 1400.