This is a good choice for larger displacement EVO builds with head and piston modifications utilizing a 10.8-11.3 compression. This cam was developed to make the power sooner in the torque band while still maintaining its power in the higher RPMs. This is the builders preferred cam for larger displacement motors. This cam requires performance valve springs due to its 660 lift as well as adjustable pushrods and roller rocker arms. For this cam to be fully utilized, it will require a set of performance heads. It has a power band from 2200 to 6200 RPM and will pull smooth from bottom to top of the RPM range. We recommend 10.5 compression minimum and will work effectively up to 11:1 compression. This is our High-Output cam for smaller displacement motors, 84” and larger cubic inch builds. This cam requires performance valve springs due to its 625 lift and adjustable pushrods. This makes it a perfect choice for two-up riding where torque is desired while still providing the quick acceleration for hot rodding around town. This is a good choice for 80” cubic inch builds with head and piston modifications utilizing a 10.1-10.5 compression and has worked very effectively in larger displacement motors where customers are seeking a torque monster. We recommend this cam run at a minimum of 10.5 on smaller cubic inch motors and is very effective at 10.8-11.1 Compression TR625 This cam is often overlooked because of its 590 Lift but has been a go to cam for our 80” kits and has been used very effectively in larger cubic inch motors. 1987 Use on EVO 1984-present 4 5/8” 3 5/8” +.010 8 1/2” *9.This was one of the first evo cams ever designed by T-Man Performance. Use on EVO 1984-present Use on EVO 1984-present Use on EVO 1984-presentĨ7” EVOLUTION ® STROKER KITS WITH FLAT TOP PISTONSĨ9” EVOLUTION ® STROKER KITS WITH FLAT TOP PISTONSĩ6” EVOLUTION ® STROKER KITS WITH FLAT TOP PISTONS (SEE JIMS ® CASE BORING TOOL NO.1409) PART NO. Pressed Plug For Increased Flywheel RetentionĨ0” EVOLUTION ® STROKER KITS WITH DOMED PISTONS For more details see No.1972-IS instructions Parts not available separately, except piston sets.See JIMS ® Evo case bore tool No.1409 on page 168. For 3-5/8” bore pistons, motor cases will have to be bored to install 3-5/8” cylinders. 24628-87 pinion bearings may also be used. These kits can be installed into 1984-99 cases with standard pinion shaft races (24599-58B, 24599-58A, etc.). These kits are shipped with standard length sprocket and pinion shafts. JIMS ® new EVO crankshaft goes a long way to narrow the difference in strength between the two engines. This greater rigidity and load capacity is perhaps the greatest advantage of the Twin Cam ® engine over the EVO. Harley choose to enlarge the pin diameter and make it a press fit in flywheels of the Twin Cam ® engine. The taper-fit crank pin flexes at high rpm and can often shift, even in normal use. The bolt together EVO crankshaft has some limits when run at high rpm in powerful engines. This is the strongest and most rigid EVO crankshaft made. Of course, we use the proven JIMS ® “H” beam 4340 chromoly connecting rods for the ultimate in strength and stability. Each left flywheel and shaft is forged as a unit to maxi- mize stiffness and reliability. We have integrated the strength and stiffness of the genuine Harley ® Twin Cam ® crank pin and bearings into our new Evo crankshaft assembly. Unmatched strength for your EVO! Your next high performance EVO engine build will be more reliable with JIMS ® new EVO/Twin Cam ® hybrid crank assembly.
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