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Thread: 6.5 Turbo charger on a 6.2

  1. #1
    Join Date
    Nov 2012
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    iceland
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    2

    Default 6.5 Turbo charger on a 6.2

    Greetings fellow Diesel dudes!

    What can I expect in increase of hp and torque by putting a 6.5 turbo charger on a 6.2 '80's engine and what kind of problems could i expect to encounter during this transformation?
    Thanks

  2. #2
    Join Date
    Apr 2001
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    CA
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    If you can fit it in the engine compartment, expect 40-50% power/torque increase.
    1985 Blazer 6.2
    2001 GMC 2500HD D/A
    dmaxmaverick@thedieselpage.com

  3. #3
    Join Date
    Jan 2001
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    New Hampshire - Live Free or Die
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    6,058

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    Quote Originally Posted by DmaxMaverick View Post
    If you can fit it in the engine compartment
    The placement of the 6.5 turbo and the 80's air conditioner evaporator overlap.
    The Constitution needs to be re-read, not re-written!

    If you can't handle Dr. Seuss, how will you handle real life?

    Current oil burners: MB GLK250 BlueTEC, John Deere X758
    New ride: MB GLS450 - most stately
    Gone but not forgotten: '87 F350 7.3, '93 C2500 6.5, '95 K2500 6.5, '06 K2500HD 6.6, '90 MB 350SDL, Kubota 7510

  4. #4
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    Mar 2009
    Location
    evignton va
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    So what do you do about the ac box

  5. #5
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    Quote Originally Posted by csa dad View Post
    So what do you do about the ac box
    Relocate it, or relocate the turbo. I replied to your thread in the conversion forum.
    1985 Blazer 6.2
    2001 GMC 2500HD D/A
    dmaxmaverick@thedieselpage.com

  6. #6
    Join Date
    Mar 2009
    Location
    evignton va
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    Default

    Thanks anyone with some pics of this done

  7. #7
    Join Date
    Feb 2000
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    Montana
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    Interference with the A/C housing can be solved. However, when mounted on a factory 6.5 exhaust manifold, the exhaust outlet on a GM-x series turbocharger points straight down at the frame rail in an 80's pickup truck. Those who have done it created a dog-legged downpipe that jumps either inside or outside the frame rail. It's not a pretty solution. Those same people all say they wouldn't do it again.

    A much better solution is the Banks 6.2 exhaust manifold, which positions the turbo in a much more convenient location.

    A good way to explain how a turbo improves 6.2L performance is to say you'll have the power in 3rd gear that you had in 2nd before.

    Jim

  8. #8
    Join Date
    Apr 2001
    Location
    Newberg Oregon
    Posts
    12,304

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    I agree with Jim, scare up a Banks setup.

    These can be found on ebay and at time on Craigs list.

    The Banks kit is neat and sanitary and will solve the clearance issue without having to deal with all the fuss.

    Missy
    (1) 1995 Suburban 2500 4x4
    (1) 1997 Astro
    (1) 2005 Suburban (Papa Smurf)
    THIS IS BOW TIE COUNTRY

  9. #9
    Join Date
    Feb 2008
    Location
    Northeast CT
    Posts
    111

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    You don't have a signature unless I missed it. What kind of truck are you considering doing this too ? That makes a huge difference. If it's an 88 GMT400 it's pretty bolt on. If it's an old square body that gets more interesting. It's not impossible but does require fabrication. I would do it again now that I worked out all the bugs the first time around but as said the main issue is whether you have a\c or not. I have seen people modify an S10 a/c box to clear the turbo. I did not hav a/c so it wa not an issue but I had to relocate my battery(CUCV both batts on pass side). Exhaust was no big deal for me but my truck is lifted. No sure what issues a stock hieght would have. I can tell you mine runs as good as any 6.5. It's got tons of power now and unlike the 6.5s of the past I had, it does not run hot at all so far. Even towing. The Squarebodys have alot better airflow .
    1886 M1008 CUCV
    GM4 Turbo,DB24911 turned up.
    Raptor 100 lp.
    NV4500(the way they should have come)
    5 inch Redneckmaster Ex
    Autometer Fullsweeps
    Serp Belt conversion. HO WP. Dmax Fan

    Previuosly owned:
    2000 K3500 6.5TD
    1993 K3500 6.5TD
    1983 K5 6.2
    1998 GMC Suburban 2500 6.5TD
    1991 GMC Jimmy 6.2
    1989 GMC Vandura 2500 Hi Top 6.2
    1983 GMC K2500 6.2
    1999 Ford Suerduty 350 7.3PS
    1983 Ford E-350 6.9
    1982 VW Rabbit Diesel

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