Every car has a story, and the story on the HHR is easily one of the most unusual in the Ghostworks Garage. It began back in 2005 when Chevy was preparing to launch the all-new HHR. In order to show the customizing potential of the new wagon, Chevy approached a handful of car builders around the country and asked about building a custom HHR for an upcoming TV show and for display use at varying venues the next year. We were fortunate enough to be asked, and of course we agreed.


So, a little while later, we found ourselves in possession of a pre-production HHR. The good news was we could do whatever we wanted to the car. The bad news was it had to be finished and ready for display in 6 weeks. No time to waste, then….


Well, the build-style seemed obvious to us as classic muscle car fans, we decided to make the HHR a V8, rear-wheel drive sedan delivery. We sourced a prototype carbureted LS6 engine that was originally designed as a spec engine for a now-defunct circle-track series and decided it would make a great powerplant. Behind that we bolted up a heavily modified TH700R4 which ran to a 10-bolt rear out of a 4th-gen Z28. We modified and strengthened the HHR’s front suspension and added coil-overs and big brakes. Out back we modified a 4th-gen f-body control arm/torque arm setup to work in the HHR, of course adding better components and coil-overs for adjustability. In between the front and rear suspension we did a bunch of cutting and rewelding! We had creat our own trans and driveshaft tunnel, and build mounting points for the rear suspension. And just in case the 585-horses made by the LS6 wasn’t enough, we added a big NOS kit.


We removed the rear windows and welded up the openings to make our Sedan Delivery body style. Inside we built a higher floor to clear the driveshaft tunnel and new rear suspension mounting points, and finished it with a wood/stainless setup designed for a classic pickup. We mounted up a cool set of billet Rally wheels, and dressed up the outside with a cool paint scheme. Finally, we renamed it the Heritage Hot Rod.


We finished the HHR in time to take it to a show or two before it had to be sent to Chevy. We drove it a bit, and as you can imagine it ran great, but was a bit more grumpy than your standard HHR. The car was shipped to California where it joined its brothers built by the other shops. Shortly after that, Chevy loaded all of them up and took them on the HHR promotional tour. We haven’t seen it since.

Click here for build shots

Vehicle Specifications:


GM Performance Parts LS6 circle track engine – by Wegner Motorsports

Horsepower – 585 @ 7,000 rpm

Torque – 484 @ 5,600 rpm

Max engine speed – 7,200 rpm

Engine Type: GM Gen III

Displacement: 346 (5.7L)

Compression ratio: 10.8:1

Block: Aluminum 6 bolt, cross bolt mains

Front cover: GM# 88958679 accessory drive

Crankshaft: 3.62′ stroke nodular iron

Intake manifold: GM# 88958675

Gen III 4 barrel

Connecting Rods: 6.100′ powdered metal

WAR Street D Pistons: 3.900′ diameter coated aluminum

Camshaft: Hydraulic roller

Cam lift: .570′ int./.570′ exh. #60454

Cam duration @ .050: 239 int./251 exh.

Cylinder Heads: WAR max motion 6 CNC

Rocker ratio: 1.7:1 powdered metal Maximum RPM: 7,250

Valve spring PSI: 95# installed/310# @.570′ lift

Valve diameter: 2.00′ int./1.55 exh. “stainless”

MSD distributor, ignition control system

Distributor: MSD# 8382

Street and Performance street rod headers

Year One modified custom exhaust with side outlets


93 octane

Cooling System:

Be Cool aluminum radiator and electric fan


TCI TH700-R4 overdrive automatic transmission
(built to handle 750hp)

TCI lock up torque converter

Front Suspension:

Suspension Modified HHR front suspension/cradle
converted to front steer 2001 Z28 steering rack with
modified Z28 tie rod ends

Rear Suspension:

Modified 2001 Z28 rear suspension

round tube frame reinforcements

Custom torque

Lakewood control arms

QA1 coil-over

Lakewood panhard rod


Leather seat inserts with custom Heritage Hot Rod embroidery

Custom door panels

Custom carpet set

Seat inserts/door panels/carpet by Jeff Henderson Upholstery

Modified dash with NOS progressive controller in
center glove box

Clock Doc-modified HHR gauges

Autometer nitrous gauges

Modified HHR console with 1970 Chevelle “Horseshoe” shifter assembly

Rear deck assembly made from vintage Chevy pickup wood bed kit

Custom aluminum storage bins throughout rear compartment


Firewall and floorpan modified for rear wheel drive conversion

1970 Chevelle inner rear wheelhouse

Smoothed front and rear bumper covers

Smoothed rear hatch
Emblems removed from the body

Brushed or Blacked custom aluminum trim

Custom mesh grill
Custom cowl hood (cowl from 1970 Chevelle)

Rear doors smoothed and rear windows filled for delivery look

GM Accessories running boards and rear spoiler


BASF Paints:

Shale Gray Metallic, Daytona Blue,
Black Pearl Metallic & Lime Crystal

Fuel System:

Fuel Pump: Carter

Mallory electric fuel pump

RCI fuel cell
Wegner-modified Holley 850 cfm carburetor

Carburetor: WAR 850
NOS nitrous system with progressive controller

Rear Axle:

Narrowed 2001 Z28 rear axle assembly

Richmond 3.73 ring and pinion

Auburn Pro Series limited slip

Moser axle set


17″x7″ Wheel Vintiques Billet Rally Wheels

215/45/17 G-Force KDW tires

18″x10″ Wheel Vintiques Billet Rally Wheels

295/35/18 Drag Radial tires

Entertainment System:

Electronics Panasonic AM/FM/CD/DVD head unit

Panasonic video moniter

Kicker speakers
2000 watt amplifiers

Audio system by Coy Roberts and Traffic Jams