Troy Kreftmeyer's GN!

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Troy’s 86 GN Build List

 Engine:                   3.8L low nickel block (3)

Crank:                      New GM

Piston:                     JE .020 Teflon coated & Ceramic Tops

Heads:                     GN1 Aluminum

Con.Rod:                 Stock GM

Cam:                        P.T.E. 218 Hydraulic

Rings:                      JE 3.820

Push Rod:                 P.T.E. 8.850

Rocker Arms:                 Stock GN

Oil Pump:                 P.T.E.

Timing Cvr:                 P.T.E.

Intake:                     B.G.C. Machined for 70mm TB

Main Caps:                 Steel centers

Wrist Pins:                 JE

Balancer:                 External BHJ Dynamics

Torque Cnv:                 Precision Industries multi-clutch Vigilante

Computer:                 FelPro SEFFI wide band O2

Injectors:                 55lb/hr

Trans:                      PMAC Rebuilt

Shocks:                   Front: Adjustable                             Rear: Stock

Oil Sys:                   Remote Filter

Tires:                       BFG 275/50-15 Drag radials

Fuel Pumps:                 Dual Walbro 307s

Air Filter:                 K&N 14” cone

Intercooler:                 ATR liquid

Throttle Body:                 62mm

Fuel Filter:                 Wix

Headers:                                 ATR Stainless

Exhaust:                 ATR dual 2.5”

Turbo:                     PT62

Axles:                      Forged, No C-clip

Radiator:                 17 fin, 4 row

Trans Cooler:                 B&M Supercooler

Rear Brakes:                 Long shoe, Over sized piston

 Cam Grind:

     Duration @ .050                    .218

    Lobe Lift                                 .3026

    Lobe Separation                    110

     Seat Duration @ .006         .218

    Gross Valve Lift                     .469

    Valve Lash (Hot)                   0

    Degree Intake Lobe to  .050 Lift

    Seat Timing Int.                     BTDC:1                   ABDC:37

    Seat Timing Exh.                    BBDC:41                 ATDC:3-