- Grind Number: 266HR
- Lifter Type: Hydraulic Roller Lifter
- Engine Family: Chevrolet 4.3 liter 262 c.i. 90° 6 CYL. 1980-1997
- Description: Hydraulic Roller-Works with throttle body and sequential port injection with aftermarket chip. Good low end and mid-range.
- Cam Family: MagnumT Same as above but for Computer Controlled Vehicles
| Specifications | Intake | Exhaust | |||||||||||||||||||||||||
| RPM Range: | Valve Lash: | ||||||||||||||||||||||||||
| Valve Timing: | Duration: | ||||||||||||||||||||||||||
| Lobe Separation: | Duration @ .050" Lift: | ||||||||||||||||||||||||||
| Intake Centerline: | Valve Lift: | ||||||||||||||||||||||||||
| Lobe Lift: | |||||||||||||||||||||||||||
| Valve Timing @ 0.006 Lift: | |||||||||||||||||||||||||||
| |||||||||||||||||||||||||||
Vehicle Fitments:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1987 - 1995 | Chevrolet | Astro | CL, CS |
| 1996 - 2005 | Chevrolet | Astro | LS |
| 1987 - 2005 | Chevrolet | Astro | LT, Base |
| 1995 - 2005 | Chevrolet | Blazer | Base |
| 1995 - 1997 | Chevrolet | Blazer | Deluxe |
| 1996 - 2004 | Chevrolet | Blazer | LS |
| 1995 - 2002 | Chevrolet | Blazer | LT |
| 2002 | Chevrolet | Blazer | LTZ |
| 1999 - 2001 | Chevrolet | Blazer | Trailblazer |
| 2001 - 2005 | Chevrolet | Blazer | Xtreme |
| 2003 - 2005 | Chevrolet | Blazer | ZR2 |
| 1990 - 1993 | Chevrolet | C1500 | 454 SS |
| 1989 - 1997 | Chevrolet | C1500 | Base |
| 1988 - 1992 | Chevrolet | C1500 | Scottsdale |
| 1988 - 1998 | Chevrolet | C1500 | Silverado, Cheyenne |
| 1990 - 1998 | Chevrolet | C1500 | WT |
| 1988 - 1995 | Chevrolet | C2500 | Base, Cheyenne, Silverado |
| 1993 | Chevrolet | C2500 | Custom, 400 SS |
| 1988 - 1992 | Chevrolet | C2500 | Scottsdale |
| 1994 - 1995 | Chevrolet | C2500 | WT |
| 1987 - 1992 | Chevrolet | Caprice | Base |
| 1987 - 1993 | Chevrolet | Caprice | Classic |
| 1987 - 1990 | Chevrolet | Caprice | Classic Brougham, Classic LS Brougham |
| 1993 | Chevrolet | Caprice | Classic LS |
| 1992 - 1993 | Chevrolet | Caprice | Classic LTZ |
| 1992 | Chevrolet | Commercial Chassis | Base |
| 1987 | Chevrolet | El Camino | SS, Base |
| 1996 - 2013 | Chevrolet | Express 1500 | LS, Base |
| 2001 - 2013 | Chevrolet | Express 1500 | LT |
| 1996 - 2006 | Chevrolet | Express 2500 | Base, LS |
| 2006 | Chevrolet | Express 2500 | LT |
| 1987 | Chevrolet | G10 | Bonaventure |
| 1987 - 1995 | Chevrolet | G10 | Chevy Van, Beauville, Sportvan |
| 1995 | Chevrolet | G20 | Base |
| 1987 - 1995 | Chevrolet | G20 | Beauville, Chevy Van, Sportvan |
| 1987 - 1996 | Chevrolet | G30 | Sportvan, Chevy Van, Hi-Cube, Beauville |
| 1994 - 1997 | Chevrolet | K1500 | Base |
| 1988 - 1998 | Chevrolet | K1500 | Cheyenne, Silverado |
| 1988 - 1992 | Chevrolet | K1500 | Scottsdale |
| 1991 | Chevrolet | K1500 | Sport |
| 1990 - 1998 | Chevrolet | K1500 | WT |
| 1988 - 1995 | Chevrolet | K2500 | Cheyenne, Silverado |
| 1988 - 1992 | Chevrolet | K2500 | Scottsdale |
| 1994 - 1995 | Chevrolet | K2500 | WT, Base |
| 1987 - 1988 | Chevrolet | Monte Carlo | Base, SS, LS |
| 1990 - 1999 | Chevrolet | P30 | Base |
| 1990 | Chevrolet | P30 | Step-Van |
| 1987 | Chevrolet | R10 | Silverado, Scottsdale, Custom Deluxe |
| 1988 | Chevrolet | R20 | Cheyenne |
| 1987 - 1988 | Chevrolet | R20 | Custom Deluxe, Silverado, Scottsdale |
| 1991 | Chevrolet | S10 | Baja |
| 1988 - 2003 | Chevrolet | S10 | Base |
| 1988 - 1990 | Chevrolet | S10 | Durango |
| 1992 - 1993 | Chevrolet | S10 | EL |
| 1994 - 2004 | Chevrolet | S10 | LS |
| 1991 - 1993 | Chevrolet | S10 | Maxi |
| 1988 - 1989 | Chevrolet | S10 | Sport |
| 1994 - 1998 | Chevrolet | S10 | SS |
| 1988 - 1992 | Chevrolet | S10 | Tahoe |
| 1999 - 2003 | Chevrolet | S10 | Xtreme |
| 1994 - 2003 | Chevrolet | S10 | ZR2 |
| 2002 - 2004 | Chevrolet | S10 | ZR5 |
| 1988 - 1989 | Chevrolet | S10 Blazer | High Country |
| 1994 | Chevrolet | S10 Blazer | LT |
| 1988 - 1992 | Chevrolet | S10 Blazer | Sport |
| 1991 - 1994 | Chevrolet | S10 Blazer | Tahoe LT |
| 1988 - 1994 | Chevrolet | S10 Blazer | Tahoe, Base |
| 2002 | Chevrolet | Silverado 1500 | Custom |
| 2004 - 2013 | Chevrolet | Silverado 1500 | Hybrid |
| 1999 - 2013 | Chevrolet | Silverado 1500 | LS, Base, LT |
| 2007 - 2013 | Chevrolet | Silverado 1500 | LTZ |
| 2003 - 2006 | Chevrolet | Silverado 1500 | SS |
| 2002 - 2013 | Chevrolet | Silverado 1500 | WT |
| 2010 - 2013 | Chevrolet | Silverado 1500 | XFE |
| 2004 | Chevrolet | Silverado 1500 | Z71 |
| 2007 | Chevrolet | Silverado 1500 Classic | LS, WT, SS, Hybrid, LT |
| 1987 | Chevrolet | V10 | Custom Deluxe, Silverado, Scottsdale |
| 1997 | GMC | C1500 | Sierra GT |
| 1994 - 1998 | GMC | C1500 | Sierra SL, Sierra Special, Sierra SLT |
| 1988 - 1998 | GMC | C1500 | Sierra SLE |
| 1988 - 1993 | GMC | C1500 | Sierra SLX, Sierra |
| 1994 - 1995 | GMC | C2500 | Sierra SL, Sierra SLT |
| 1988 - 1995 | GMC | C2500 | Sierra SLE |
| 1988 - 1993 | GMC | C2500 | Sierra SLX, Sierra |
| 1987 | GMC | Caballero | Base, Diablo |
| 1987 - 1995 | GMC | G1500 | Vandura, Rally STX, Rally |
| 1987 - 1995 | GMC | G2500 | Rally, Vandura, Rally STX |
| 1987 - 1988 | GMC | G3500 | Rally Custom |
| 1987 - 1995 | GMC | G3500 | Rally STX, Vandura Special, Vandura, Rally Camper Special, Rally, Magnavan |
| 1992 - 1996 | GMC | Jimmy | Base |
| 2000 - 2001 | GMC | Jimmy | Diamond Edition |
| 1998 - 2000 | GMC | Jimmy | Envoy |
| 1995 - 2001 | GMC | Jimmy | SL |
| 1992 - 2001 | GMC | Jimmy | SLE, SLT |
| 1993 - 2001 | GMC | Jimmy | SLS |
| 1994 - 1998 | GMC | K1500 | Sierra SL, Sierra SLT, Sierra Special |
| 1988 - 1998 | GMC | K1500 | Sierra SLE |
| 1995 | GMC | K1500 | Sierra SLS |
| 1988 - 1993 | GMC | K1500 | Sierra SLX, Sierra |
| 1993 | GMC | K1500 | Sierra Sport |
| 1994 - 1995 | GMC | K2500 | Sierra SL, Sierra SLT |
| 1988 - 1995 | GMC | K2500 | Sierra SLE |
| 1988 - 1993 | GMC | K2500 | Sierra, Sierra SLX |
| 1990 - 1999 | GMC | P3500 | Base |
| 1990 | GMC | P3500 | Value Van |
| 1987 | GMC | R1500 | Sierra Classic, Base, High Sierra |
| 1987 | GMC | R2500 | High Sierra, Sierra Classic, Base |
| 1988 | GMC | S15 | Gypsy |
| 1988 - 1990 | GMC | S15 | High Sierra, Sierra Classic, Base |
| 1988 - 1991 | GMC | S15 Jimmy | Base |
| 1988 - 1990 | GMC | S15 Jimmy | Gypsy, Sierra Classic |
| 1991 | GMC | S15 Jimmy | SLT, SLE, SLS |
| 1988 - 1989 | GMC | S15 Jimmy | Timberline |
| 1993 | GMC | Safari | GT |
| 1987 - 2002 | GMC | Safari | SL |
| 1987 - 2005 | GMC | Safari | SLE, Base, SLT |
| 1987 - 1998 | GMC | Safari | SLX |
| 1996 - 2013 | GMC | Savana 1500 | Base, SLE |
| 2006 - 2013 | GMC | Savana 1500 | LT, LS |
| 2009 - 2013 | GMC | Savana 1500 | SL |
| 2001 - 2002 | GMC | Savana 1500 | SLT |
| 1996 - 2006 | GMC | Savana 2500 | Base |
| 1996 - 2005 | GMC | Savana 2500 | SLE |
| 2001 - 2002 | GMC | Savana 2500 | SLT |
| 2002 - 2005 | GMC | Sierra 1500 | Base |
| 2001 | GMC | Sierra 1500 | C3 |
| 2002 | GMC | Sierra 1500 | HT |
| 2005 - 2013 | GMC | Sierra 1500 | Hybrid |
| 1999 - 2013 | GMC | Sierra 1500 | SL, SLT, SLE |
| 2002 - 2013 | GMC | Sierra 1500 | WT, Denali |
| 2010 - 2013 | GMC | Sierra 1500 | XFE |
| 2007 | GMC | Sierra 1500 Classic | SLE, Hybrid, Denali, WT, SL, SLT |
| 1991 - 1993 | GMC | Sonoma | Base |
| 1992 | GMC | Sonoma | GT |
| 1994 - 2004 | GMC | Sonoma | SL |
| 1991 - 2001 | GMC | Sonoma | SLE |
| 1993 - 2004 | GMC | Sonoma | SLS |
| 1991 | GMC | Syclone | Base |
| 1992 - 1993 | GMC | Typhoon | Base |
| 1987 | GMC | V1500 | Base, Sierra Classic, High Sierra |
| 2000 | Isuzu | Hombre | XS, S |
| 1991 - 2001 | Oldsmobile | Bravada | Base |
| 1987 | Pontiac | Grand Prix | Brougham, Base, LE |
| 2002 - 2003 | Workhorse | FasTrack FT931 | Base |