Jump to content

FS: My '89 951 383 LSx conversion


Recommended Posts

I’ve owned this car for 6 years and swapped it shortly after I got it due to the factory motor having unreasonable amounts of blow by. I initially put in a used motor from a 2002 Camaro SS but after three years went to a built 383 stroker motor. This car is incredibly fast and will easily run down 996 GT3’s at the track while being docile driving around town.

I built the car as a street/Time Trial car, as such it still has niceties such as air conditioning, cruise control, stereo etc. Everything on the car works, power windows, sunroof, the aforementioned A/C and so on. I went through the process of getting the car emissions inspected in the state of Colorado, its 49 state emissions compliant, not currently compliant for California although with some work it could be. The swap has received Colorado states blessing and the car gets tested as a ’02 Camaro SS. It easily passes emissions every time I’ve gone, it fast passed the last time I took it last spring.

All body panels are original and still have the VIN tags on them. Most of the paint is still original and being 25 years old is showing its age. It looks good, but has lost some of its luster. The graphics are vinyl and will easily peel off. The nose/bumper show typical rock chips and there’s a small “outtie” dent above where the throttle body sits on the hood. The car is straight, no accidents, no stories.

I’ve extensively gone through this car mechanically in the past six years and have basically rebuilt the entire car with all new parts. I’ve added/fabricated many parts that aren’t part of a normal LS swap to keep the car happy and running correctly long term such as a custom oil cooler, power steering cooler, auxiliary radiator and adding modern ABS from a Porsche Boxster.

The motor was built by Thompson Racing and has less than 3000 miles on it. I’ve been competing with NASA Time Trial Group 2, which has a power to weight limit. That’s constrained the current motor power wise, a cam swap would probably add upwards to 50 more horsepower at the wheels; as it currently sits its making 422rwhp and 410 ft lbs at the wheels.

All wear items on the car have less than 5000 miles on them. I have an extensive set of spares including body panels, wheels/tires and the like that can also be included with the sale but will be priced separately from the sale of just the car. I will not part out the car or my spare parts unless the car sells as is, whole first.

Asking price for the car is $25,000 obo.


Please look at my build threads on Rennlist and the 944 Hybrids forum:



Video here on YouTube:

Here’s the build sheet on the car showing all the parts that it has.


Thompson Motorsports Built 383 Stroker Motor, installed Summer 2014

TMS 4340 stroker crank

TMS 4340 Forged H beam rods with ARP rod bolts

RHS 232cc CNC heads with .650” Dual valvesprings

GM rockers with Comp Cams trunion upgrade

TMS LS7 lifters

Melling HP oil pump

PSI engine wiring harness

FAST 92 Intake Manifold

FAST 92 Throttle body

Custom siamesed cold air intake

Engine Power Systems 226/230 cam

Kooks 1 7/8” primary 3” collector long tube headers

Custom dual 2.5” exhaust with magnaflow muffler and tips

Custom dyno tuned by MAC Autosport

Removable 3” smog legal cats

Test pipes to replace cats

Spec stage 2 clutch

Spec aluminum lightened flywheel

QuickTime bell housing with scatter shield

Turn One power steering pump

Evans Cooling Water pump

SLP 180* thermostat

KaTech Tensioner

Ron Davis/Renegade Hybrids radiator

2004-2007 Audi S4 Auxiliary side mount radiator

Mocal oil cooler

Power steering cooler

OBD2 port with Check Engine light

Completely smog legal in 49 states, passed Smog Referee Certification in Colorado

914 drivers side headlight motor

Texas Performance Concepts (TPC)

New style uprights/set back plates and motor mounts

Brake master cylinder plate

½” cross member spacers

Oil pan and pick up tube

Oil filter relocation kit

Vehicle speed sensor kit

Fuel filter kit


Factory 1989 Turbo S “AOR” transmission

Factory transmission cooler

Factory limited slip differential

Naturally Aspirated 5th gear

Rebuilt shift linkage and shift rod



Porsche Boxster ABS pump/ECU

Ford Mustang hydroboost with Porsche 944 Turbo Master Cylinder

Porsche 993 Turbo “Big Red” front brake calipers with 964 Turbo front brake rotors

Porsche 944 Turbo S rear brake calipers and brake rotors

Tilton infinitely adjustable rear brake proportioning valve


Bilstein Escort Cup Coilovers

Rebuilt/Revalved by Bilstein

450lb front 700lb rear springs

Racers Edge Camber plates

Racers Edge 2.25” front upper spring hats

Front strut bar

Rear torsion bar delete

Elephant Racing Spherical bearings

Elephant Racing rear trailing arm bearing blocks

968 M030 adjustable swaybars

Car aligned and corner weighed by Chris Cervelli


Custom welded Hanksville Hotrods rollbar

Schroth Profi 2 6 point harnesses

Momo “Competition” steering wheel with quick release

Airbags disabled, no airbag light on dash

3 gauge panel in center console with:

Autometer water temp gauge

Autometer oil temp gauge

AEM wide band Air/Fuel gauge

Sony MP3/iPod player

Recaro SPG XL seats

IO Port rollbar camera mount

All factory gauges work

A/C works, cruise control works, everything works

Sony MP3 player with iPod and USB inputs


Factory Guards Red paint

Aerolatches hood pins (2) for hood

4 Carbon Fiber reverse louver hood vents

Fiberglass front splitter, unknown brand

968 Door handles

Curt tow hitch

All original factory matching panels with VIN stickers


OEM Porsche “MY02” 18x8” front, 18x10” rear wheels

Continental Conti sport tires















Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...