Cams for the Twin Cam motor. Chain or gear drive.

             Cams for all 2007 Twin Cam models & ‘06 Dyna

HQ-TC-575-HC   “Fire Brand” uses stock hydraulic chain tensioner system. Use with compression ratios up to 10.5:1. Great throttle response. Very strong mid-range.

Intake   20/40    240    .575” lift

Exhaust  52/24     256   .530” lift

HQ-TC-600-HC   “Josey Wales” uses stock hydraulic chain tensioner system. Use with compression up to 11:1. Pulls very hard from 3000 RPM up. Good bottom end, very strong top end.

Intake     19/47     246   .600” lift

Exhaust  52/24     256   .530” lift

HQ-TC-500-HC “Hurricane” uses stock hydraulic chain tensioner system. This asymmetrical double patterned cam is an absolute winner as a bolt-in cam. It will increase power across the whole range and is compression friendly too. Designed as a bolt in replacement, it broadly enhances the power curve. If used in a 103 or larger motor (keeping compression at or below 10.5:1, this cam will still be compatible)

Intake     20/36     236  .500” lift

Exhaust  51/19     250   .500” lift

Special Note: All head Quarters cams with lifts below .650” will work in stock 2005-2007 heads with original equipment conical (beehive) springs, valves and seals. Performance head work is recommended but not required.

1999-2006 (except ‘06 Dyna) Twin Cam models

HQ-0034      “Hurricane”  uses stock chain drive

HQ-0034-G  “Hurricane”  special gear driven type

Bolt-in cams for 1450 and 1550cc engines using stock or modified heads. Good power increases throughout the whole RPM range. Makes the mid-range very responsive. This cam is extremely popular with the dealers that use it It could “agruably” be the best bolt in cam on the market if we had the advertising budget to market it properly.

John’s Performance in Washington state used one of these in a stock 88 cubic inch 2006 Street Glide using a Power Commander and Rhinehart Tru-Dual exhaust. John made 89.8 HP and 95.4 foot pounds of torque. A very impressive dyno sheet and said he could have got more if the customer would have paid for more dyno time.

We have seen the 95 cubic inch motors at 9.6:1 produce 88 HP and 101 foot pounds with stock heads.

Timing specs measured at .053” tappet lift.

Intake     20/36     236  .500” lift

Exhaust  51/19     250   .500” lift

HQ-0039      “Cyclone”  uses stock chain drive

HQ-0039-G  “Cyclone”  special gear driven type

Cams for use with ported heads on the 1450 & 1550cc motors. Also works well in 103s for bagger style bikes. Pulls progressively harder from idle all the way up. Works well with both 9.5 and 10.5:1 motors. Very strong mid-range ideal for touring bikes. Requires our HQ-2007 valve spring kit. (the owner of the company uses this cam in his 10.5:1 95 inch Dyna because he likes the neck snapping torque feel) this cam makes a great bolt-in for waking up CVO SE 103 motors.

Timing specs measured at .053” tappet lift.

Intake     20/36     236  .580” lift

Exhaust  52/24     256   .530” lift

HQ-TC-575-G “Fire Storm” special gear driven type

This cam was designed for baggers with compression ratios 9.75 - 10.5:1. It will provide very strong torque figures

Intake   20/40    240    .575” lift

Exhaust  52/24     256   .530” lift

HQ-0033      “Tornado”  uses stock chain drive

HQ-0033-G  “Tornado”  special gear driven type

We developed this grind back in 1989 for the Evolution motors. It was very unusual for the time and it’s success took the market by storm. Many of our competitors were inspired to *borrow* from it’s design, as can be seen by their own cam specs. Unfortunately for our competitors, we nailed it, they can only come close.

These cams are for use with Twin Cam ported heads used on the 1450 & 1550cc motors. Pulls progressively harder from idle all the way up. Works best with 10.5 thru 11:1  motors. Very strong upper range making it ideal for lighter bikes like the Dyna. Also woks extremely well in 103, 106 and 107” engines around 10:1- 11:1 compression ratios. Requires our HQ-2007 valve spring kit.

Timing specs measured at .053” tappet lift.

Intake     19/47     246   .600” lift

Exhaust  52/24     256   .530” lift

HQ-0036-G  “Blizzard” special gear driven type

Extended intake timing version of our HQ-0033 series cams. Works best with strokers or motors exceeding 11:1 compression. Very strong upper range making it ideal big motored bikes. Requires our HQ-2007 valve spring kit.

Timing specs measured at .053” tappet lift.

Intake     20/54     254   .600” lift

Exhaust  53/22     256   .530” lift

HQ-0038-G  “Storm”  special gear driven type

Extended intake timing version of our HQ-0036 series cams. This is the one for the biggest stroker and large bore motors using high compression. A good example would be an S&S 116 or 124 with compression ratio higher than 11:1. We have seen over 150 horsepower and foot pounds of torque using this cam. Requires our HQ-2007 valve spring kit.

Timing specs measured at .053” tappet lift.

Intake     23/63     266   .600” lift

Exhaust  52/24     256   .530” lift

HQ-0037-G “Twin Camzilla”

Combination drag and street. We made this cam for the HUGE motors that have become popular recently. It works really well with a healthy increase in compression. These cams are not suitable for stock heads. Very snappy bottom and mid-range. Wait ‘till you hear one idle. Nasty!

Timing specs measured at .053” tappet lift.

Intake   26/60      266   .650” lift

Exhaust  70/24   274   .575” lift