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C3 CORVETTE LS SWAP RESTOMOD

SCCA  / Solo C Street (CS) class


Zero to 60 mph: 4.2 sec

Standing ¼-mile: 12.9 sec @ 110 mph 

Top speed: 120 mph (gearing limited)**

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410 hp (LS Engine Swap with High Performance modifications)

Redline 6000 rpm

Power-To-Weight 8.0:1 (ref: stock 1981 Corvette 16.7:1)


185.2" L / 69" W / 48" H

Weight:  3179 lb 

Coefficient of Drag 0.443


5.3L (325ci) LM4 V8 (LS Family Gen III)

Aluminum Block Vortec 5300 

(Aluminum LM4 80lb lighter than iron block LS1)


Complete Engine Rebuild:

  • American Racing Custom Tune

  • Cathedral Port 862 Heads

  • Brian Tooley Performance Camshaft Stage 3

  • 36-pound Fuel Injectors

  • Performance Fuel Pump & Regulator

  • PerTronix Flamethrower high temperature Ceramic Spark Plug Boots

  • Performance Valve Springs

  • Upgraded Valve-cover and oil-pan Gaskets 

  • Dirty Dingo Motor Mounts

  • Performance Radiator with Electric Fans


​* LT1-style hairpin premium 150 amp alternator

* LT1-style water pump cartridge design

* Compact and reliable SD7 A/C compressor

* Type II power steering pump with baffled reservoir

* Power steering adapter hardline to AN -6 adapter

* OE pulley ratios for optimal accessory performance

* Bottom outlet heater hose options for swap application clearance


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Intake/Exhaust Upgrades:

  • Cold Air Intake

  • On 3 Performance AF2 Premium Stainless Steel Element Air Filter

  • Sharp Custom Performance Intake Manifold

  • American Racing Stainless-Steel Long-tube Headers

  • Custom 3" Stainless-Steel Exhaust

  • X-pipe

  • Black Widow Widowmaker 10 3" Mufflers

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Rebuilt Borg Warner Super T-10 Heavy-Duty Aluminum Case, Wide-Ratio 4-Speed Manual Transmission

  • 3.73:1 Limited-Slip Differential

  • 1st Gear 2.88:1 > 10.74

  • 2nd Gear 1.91:1 > 7.12

  • 3rd Gear 1.33:1 > 4.96

  • 4th Gear 1.00:1 > **3.73

  • Reverse Gear 2.78:1

Hurst Shifter with T Handle

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American Powertrain 530 ft-lb rated Hydraulic Clutch

Science Friction 1126 Hi-Performance Stage 2 Easy Street Clutch Kit:

  • High clamp load nodular iron Pressure Plate

  • 26-spline copper/organic sprung Hub Disc 

  • All steel Release Bearing

  • Stainless Steel Pilot Bearing

  • #910 GM/Mopar Grade 8 Race Ready Pressure Plate Bolts 

  • GM Hydramax hydraulic clutch Actuator System:

    • Hydramax Concentric Slave – Pre-bled, double width seals

    • Steel Braided Lines – Teflon Lined Stainless Steel

    • 3/4″ Bore Master Cylinder – Black Powder Coated

    • Hydramax Firewall Mount – Patented Adjustable Mount w/Firewall Stiffener

    • Reservoir Kit 

    • Pedal Rod and Hardware Adjustable Length

    • 621LS Aluminum Alloy bell housing, CNC Machined, high titanium content resists torque stress. Includes bell to block hardware

    • Grade 8 Race Ready Flywheel Bolts ​

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FE7 Gymkhana Suspension Package

  • Heavy-duty front & rear Sway Bars

  • Heavy-duty Springs

  • Front & rear Bilstein Gas Sport Shock Absorbers

  • Performance front upper and lower control-arm bushings


Upgraded 15″ x 8” Carroll Shelby Mini Europa Wheels 
255/60/15 BFGoodrich Radial T/A White Letter Tires (2019 date codes)

Front & rear power-assisted 11.75” Rotors
Rotors, Calipers, Pads, Master Cylinder, & Hoses replaced in March 2018

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Torch Red Exterior (original Dark Blue Metallic - 28)

Removable T-top roof panels

Pop-up headlights with upgraded Hella Halogen H4 bulbs

Tinted sided windows

Sun Stop P700 Pop-In tinted hatch

Ducktail rear spoiler

Dual Exhaust outlets

Full Ceramic Coat - Body, Glass, Trim, Wheels (aftermarket)

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Fold-forward bucket seats trimmed in Camel leather (642)

Matching dashboard, door panels, and carpeting
Power-adjustable Driver Seat

Power Windows

Power Mirrors

Air conditioning converted to R134 with all new components including Compressor, hoses, fittings, and R134A refrigerant

Heater core and Heater controls replaced

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VIN 1G1AY8768BS424368 ("S" indicates St Louis vs "5" indicating Bowling Green) was built in March of 1981 and was among the last of the Corvettes built at the original St. Louis Corvette plant.  The last Corvette built at Chevrolet’s Fisher Mill Building, located on Natural Bridge Avenue in St. Louis, Missouri rolled off the assembly line on August 1, 1981.

As production at the St. Louis plant drew to a close, most of its 900 workers eventually relocated to continue working at the new plant. 

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