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6.2 vs 6.5 ?'s (edited)

Discussion in 'The Garage' started by DieselBurb, Feb 16, 2004.

  1. DieselBurb

    DieselBurb 1/2 ton status

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    6.2 vs 6.5 ?\'s (edited)

    Anyone know the HP/torque differences in general?
     
  2. DieselBurb

    DieselBurb 1/2 ton status

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    Re: 6.2 vs 6.5 ?\'s (edited)

    ttt
     
  3. AgDieseler

    AgDieseler Certified Scrap Producer Premium Member GMOTM Winner

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    Re: 6.2 vs 6.5 ?\'s (edited)

    It depends on the year of the engine and the truck it came in.

    Early 6.2L non-turbo with DB2-4126 to DB2-4878: light duty emissions C code engines ~ 160 hp and 280 lb-ft; heavy duty emission J code engines ~ 180 hp and 285 lb-ft. Add a Banks system with a Garrett T04B turbo, and power goes to about 205 hp and 390 lb-ft.

    1993 3/4 & 1 ton 6.5TD with DB2-4911 ~ 190 hp and 380 lb-ft. You can tune this up to about 230 hp and 450 lb-ft.

    1994-1996 3/4 & 1 ton 6.5TD with DS4 pumps were just about the same.

    Late 1996 to 1998 3/4 & 1 ton with DS4-5288 pumps were 205 hp and 450 lb-ft.

    1999-present Vans and Hummers with DS4-5521 pumps were about the same, but with blocks cast by IH, 19.5:1 compression, and bigger turbo.

    Aside from making sure the engine is in sound condition, the basic formula for any good running mechanical 6.2/6.5 is a turbo (TE06H, T04B, GM8, etc.), DB2-4911, and timed based on the fuel and boost. If you're going for 14+ psi of regular boost, an intercooler is must.
     
  4. DieselBurb

    DieselBurb 1/2 ton status

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    Re: 6.2 vs 6.5 ?\'s (edited)

    Thanks for the info. How about number for a 94 6.5 NA?
     
  5. AgDieseler

    AgDieseler Certified Scrap Producer Premium Member GMOTM Winner

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    Re: 6.2 vs 6.5 ?\'s (edited)

    A 94 should still have the DS4 pump, but it will be tuned down from the turbo specs. I really don't know for sure, but my guess would be around 180 hp and 300 lb-ft - tops.
     
  6. DieselBurb

    DieselBurb 1/2 ton status

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    Re: 6.2 vs 6.5 ?\'s (edited)

    I just checked your webpage...Duuuude, you have a sweeet /forums/images/graemlins/burb.gif.

    ....it's my thread, I can highjack it if I want to...
     

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