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Z Frog

Z Frog was sold on Aug 2016: (ad is here)

The Z Frog is a 2002 Corvette C5 Z06 (5th generation Corvette). The engine is a stock 405hp LS6 coupled to an M12 - 6 speed manual transmission.
The interior has been upgraded with Sparco race seats, a harness bar and 6pt harnesses. The shifter uses a short throw C6Z06 shifter.
The suspension uses LG GT2 coilovers that are single adjustable.
For rubber, we use Nitto NT05 for street tires and Continental slicks for race tires.


Rollcage build

For 2014, Z Frog is having a full rollcage built by Bob Fill from Bob Fill Racing in Whately MA.
First we had to prepare the car for the rollcage install, this is documented in this video:

YouTube Video


After spending a lot of time on the forums looking for information on good and bad practices, we came up with these plans for the rollcage design: Rollcage design pdf document.




The origin

 The car was bought in an insurance auction after it was rear ended. This is how the car look liked when we got it! The nice part is that this is really easy to fix and the engine only had 32k original miles!


Cost breakdown:
  • Car auction winning bid: $9500
  • Fees, transportation: $750
  • Rear bumper + bumper bar : $700
  • Hardbar harness bar: $360
  • C6Z shifter: $200
  • DRM stainless brake lines: $140
  • Speedbleeders: $30
  • Sparco race seat with mounts + slider: $1000
  • Passenger side seat mount (already had seat): $140
  • CCA pedal covers: $170
  • 6 point harnesses (2x$150): $300
  • Momo steering wheel hub (used): $45
  • LG GT2 coilover (used): $1250
  • JOC sway bars: $625
  • Front tow hook: $25
  • Rear tow hook: $85
  • Rollcage build: $800
  • Rollcage padding: $50
  • Window net + mount: $55
  • Kill switch: $18
  • Set of 18" rims: $400
  • Sold passenger seat: -$300
  • Sold springs & Sway bars: -$450
  • Sold Hardbar harness bar: -$250
  • Sold door control module: -$60
  • Sold HUD switch: -$60
  • Longacre mirror: $60
  • Sold sun visors: -$70
  • Misc interior trim: -$40
  • Vararam VR-B2 intake: $200
  • Complete set of control arms with Pfadt poly bushings: $800
  • ECS tune: $150
  • Dorman CS360074 Clutch Slave Cylinder: $68 
  • LuK 04-905 Clutch Set: $377
  • ACDelco 12554980 GM Original Equipment Manual Transmission Clutch Housing: $153
  • Bellhousing bolts NOS GM General Motors Chevrolet 11516862: 2 for $10
  • Remote bleeder for C5: $50
  • Level Zero Motorsport Poly Mount (95A duro with .0125" 6061-T6 scuff plates): $132
  • HPE C5 Corvette Differential Torque Limiting Mount: $389 (Hoosier Performance Engineering)
  • Deka ET18XL lightweight battery: $80
Total so far: $18,252

Maintenance items:
  • LS6 valve springs + seals: $105
  • 18" scrubs: $100/$125 per tire
  • Brake pads: ~$250 per set
  • Brake rotors: ~$50 each front, $40 each rear
  • Brake fluid: $80 / season
  • Oil changes

Here are some pictures of the car including the repairs and race car build:

Z Frog Project