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Surprise to me, I'm getting $3000 back from the feds (thanks to my 401K and buying a house last year). I want to make some HP and torque gains off the line to about 3000 rpm. Currently, the 88 is stock with V&H oval slip-ons, Ness big sucker, and a PCIII. I want to keep this bike for a while and also keep it dependable. Should I go with an S&S 95" and a cam (plus the usual cam plate, bearings, etc)? Just the cam? Should I replace the entire exhaust? I'm going to have a local indy do the work. They do have a dyno on site.
Do a big bore of some type, raise compression, woods cams, HP inc throttle body, i would go gear drive if your crank checks out, and head work. Left over i woukd spend on head pipe for exhaust. Probably a full sac or fuel moto true dual conversion for cheap.
I would reuse pc iii, keep the big sucker and ovals
Last edited by bigskyroadglide; Mar 16, 2015 at 11:40 AM.
Buy a John Deere.
I don't know of any cams that boost power in the idle to 3000 rpm range, particularly on an 88" motor. Your best bet is either the John Deere or a low to mid-range cam combined with a 95" bore.
Remember that rpm range is what could be referred to as a "loafing along" range. The most fun is had well beyond those rpm's.
Buy a John Deere.
I don't know of any cams that boost power in the idle to 3000 rpm range, particularly on an 88" motor. Your best bet is either the John Deere or a low to mid-range cam combined with a 95" bore.
Remember that rpm range is what could be referred to as a "loafing along" range. The most fun is had well beyond those rpm's.
seriously if ya only want power to 3k ya may think about a diesel conversion or supercharger??? If ya want to actually get performance, bore to 98 with proper headwork, cams and tune.
I have the same set up you mention, except I have a S&S header pipe (slip ons, Big Sucker, PCIII). Here's my experience. Get a 2007 and later cam plate, it eliminates the spring loaded tensioners and has a better oil pump. Get a set of Andrews 21N (N, not just 21's). The N series are a conversion cam, meaning it fits the inner cam bearing diameter and the hydraulic cam plate which uses a different diameter on the outboard side. Outboard side uses no bearings and instead rides on an oil film. I personally reused my stock pushrods, but it is easier and faster to use adjustable rods, your call. The 21N pulls starting at 1800, and quits around 4800. Very torquey seat of the pants response and not very pricey. 76hp and 85ft.lbs. Not huge numbers, but for a street bike that I don't race it's a marked improvement over the factory ratings. On the street, torque is where it's at. Try that first, and put your other $2k plus in the bank. If you aren't happy in a couple of thousand miles, then try a big bore. I keep thinking about a bb kit, but I really don't need any more power. On the other hand, if you spend any time at above 4800 rpm for extended periods there's better cams. I have the tools to do it that I'll loan you if you cover shipping both ways.
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