TC98 Kit

For Both EFI and Carbed Models

After reading about each kit, click the appropriate button at left to see all possible options you may want.

The above photo is for visual representation only. Parts may vary slightly for different jobs.

Sport Touring package includes Head Quarters HVP ported heads and bored stock cylinders with CP forged pistons for 10.5:1 compression ratio, HQ-TC-575 stock chain driven cam or HQ-TC-575-G optional gear driven cams.
All above packages include MLS type head gaskets

Power and fuel mileage expectations.     Torque      Horsepower         Mileage
Sport Touring                                           105-115         105-115            45 MPG
The above using stock carbs or throttle bodies and good 2 into 1 pipes. Larger carbs and throttle bodies will increase HP and decrease Torque.

HQ-TC-98-ST    Twin Cam 98 Sport Touring 10.5:1 compression ratio

The following is a complete list of parts and labor required to build the Head Quarters Twin Cam 98 Sport Touring performance package.

                                            HEAD WORK
1)  HVP-TC                          Your heads completely reworked, ready to bolt back on.
     HVP-TC-MCR                  (as above with mechanical compression releases installed)
     HVP-TC-ECR                   (machined for HD electronic compression releases. not supplied)
2)  HQ-4530                       Gaskets, head, ..030" MLS type
1)  HQ-HEAD-BOARD    Fin Protector (heads bolted to this for shipping)

                                               CYLINDER WORK
1)  HQ-7100-K                   Bore (your) cylinders to 3.938"
1)  HQ-CYL-BOARD        Fin Protector (cylinders bolted to this for shipping)
1) HQ-8-5070                   Pistons, forged custom CP

                                           RECOMMENDED PARTS
1) HQ-4055                       Pushrods, adjustable EZ install type
4)  HQ-4225                       Hydraulic lifters, Black Ops type
1) 17033-99                       James rocker cover gasket and seal set

                                   Cam Choices as per drive type and appropriate year

1)  HQ-TC-575                 Cam, chain drive 1999-06 models (except 2006 Dyna)
1)  HQ-TC-575-G            Cam, gear drive 1999-06 models (except 2006 Dyna)
1)  AP-288901                  Kit, gear drive install
1)  AP-288908                  Kit, gear drive, 1999-06 (except ‘06 Dyna)
1)  HQ-TC-575-HC         Cam, chain drive, ‘06 Dyna and 2007-up all other models

                                    Additional parts for carburetor equipped models

1) HQ-7025-A                  Port, intake manifold (send us your manifold)
1)  HQ-6100                      Ignition, preprogrammed for 1999-03 models
1) HQ-6104                        Ignition, preprogrammed for 2004 & later

                                                            Optional Parts (not required)
1) HQ-32679                      Show off your build with a Head Quarters timing cover
1)  HQ-4600                       Roller Rockers

If you want this job done you will need to print a work order to send along so we know exactly what you need.
Click the red link below to find a work order for this build and print it off.
HQ-TC-98-ST Work Order
You can price any part or the whole job by viewing or printing off a price sheet found on the red link below.