Rough idle, performance usage, good upper RPM HP, bracket racing, auto trans w/3500+ converter, marine performance, 4000- 4400 cruise RPM, good w/ manifold nitrous system, 10.5 to 12.0 compression ratio advised. I plan on adding a EV27 or EV46 with adjustable pushrods and cam bearing while I have it apart.Rough idle, performance usage, good upper RPM HP, bracket racing, auto trans w/3500+ converter, marine performance, 4000- 4400 cruise RPM, good w/ manifold nitrous system, 10.5 to 12.0 compression ratio advised. I installed the cam retarded to make it pull harder at lower rpms.
CAM,W/GEAR GT 530G BIG TWIN EVO ALL YEARS HYD OR MECH POWER HOUSE 530G: EACH. Less aggressive cams will also give you better gas mileage and a smoother idle. Ultima 91-883 Replacement Hydraulic Lifter for 89-98 Harley Sportster 883 1200. With less aggressive cams you will also have less maintenance, because the springs and pushrods dont do as much work. Ultima 91-699 Roller Rocker Arms Set Evo Big Twin Cam Sportster Touring Harley. If that option is available in Cranes gear drive cams I would highly recommend them. Discount Cams for Evolution Motors from Mid-USA for Harley. The lower lift and shorter duration cams will skew the power curve down so you can get more low end torque at the expense of high-end power. The cam I had could be installed 4 degrees advanced or retarded. The Jims look pretty beefy, Crane's seems to have a more recessed roller (is that good or bad?) I'm just looking for a little consensus. S&S Cycle SS106-4382 585C Chain Drive Camshaft Kit for Twin Cam 07-17/Dyna 2006. Had an Evo a few years back with a Crane that had similar specs to the cams youre looking at.
Are the new HD ones good now? I'm looking for some input on what brand of lifter people are using. Does it look like one of those components your wondering to yourself (wow this thing looks a lil flimsy or cheap). I could be running Pre "B" type HD lifters (makes me cringe just thinking about it). I've read that it's a good idea to change lifters around 30k. My scoot is a 1994 I bought used with 60K on the ticker. I'd go with 10.5 over 10:1 with that cam, and it still wont have much grunt down low, if it's an 80'. Larger valves, you'll need to check valve to valve clearance. One Position Gives a 4 Degree Advance of Usual Cam Timing and Another Is 4 Degrees Behind. If you've still got stock valves, valve to valve clearance ad piston clearance should be OK. Some good info in there but all I kept reading was when one should change them, which way to have oil holes facing upon installation, if one could change lifters only without cam, etc etc. Revolutionary Cam Design for 80' Evolution Big Twins Has Multi-Index Gears to Offer the Versatility of Three Cam Timing Settings With One Camshaft. HI-4 Single Fire Race Ignitions (P/N 8-2100 ignition module only and P/N 8-4100 ignition kit) are true single fire, even at cranking speed. Ground my first Harley cam in 1982 and went into the cam business in 1994 selling cams to Latus H-D Cape Fear H-D Foster H-D Sun H-D Avalanche H-D Salt Lake H-D and many Others like Steve Allstaedt Racing engines to this day. I've read thru many threads and have searched "lifters" & Evo lifters. The HI-4 replaces the original equipment (OE) electronic ignition system on 1978 and later models as well as the points and mechan-ical advance on early models.
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