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6.5L Diesel Engine Discuss the 6.5 GM diesel engine & associated components. Automatic transmission questions & problems belong in the 4L80/85 - 4L60E - 6L90 Transmission Forum is the premier Duramax Diesel Forum on the internet. Registered Users do not see the above ads.
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Old 02-25-2013, 04:45 PM   #11 (permalink)
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DD98chevy's Avatar
Ok thats good to know. Thanks for the info. And thanks guys for all your help to answering my question about the gear ratios

98 Chevy 2500 6.5TD,163k on the clock. (SOLD)

My other toys:
2000 GAGT 3.4 (Summer driver) ported and polished upper and lower intake, CAI, High flow cat, Muffler delete, Custom intake and valve covers paint job, Aftermarket sound system. 15" Audiopipe sub with 1500w amp.

1991 Chevy 2500 4x4 TBI 350 700r4 tranny. Western plow. Winter Plow truck

01 GMC Yukon XL SLT 2500 4x4. 8.1 vortec. All the bells and whistles.

2002 Chevy 2500HD 8.1 496 CCLB 6" Lift on 35x12.5x20

1999 Chevy 3500 6.5 CCLB (just picked up)
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Old 02-25-2013, 07:37 PM   #12 (permalink)
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I have a manual and the same rpms. Considering the op's question had been answered I have an ignorant hi jack related question

If unwanted to change my gearing because I don't tow much anymore how would that effect my transaxle gearing relationship. I do put her in 4x4 a lot by anyone's standard

94 k 2500
Standard tranny. Pmd in the worst possible place
Bat. Mod v1
All on headlight mod.

Thanks diesel place

"Kawalski, how do you know we are out of fuel"

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Old 02-25-2013, 08:53 PM   #13 (permalink)
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You don't have a transaxle.
1992 Suburban, J-code 6.2L from a 1986 CUCV, NV4500, BW4401
9" lift with straight axle conversion, HP Dana 44 with Loc-Right in front, Dana 60 with Detroit in rear, 4.10 gears, 4 wheel disc brakes
37 x 12.50R16.5LT HUMMV tires (rolls out at 35")
2.5" true duals with Flowmaster SUV 50's with a 2.5" H-pipe just in front of the mufflers bent over the driveshaft

1984 K10 Getting ready for a nice newly refreshed 1982 (changed to a 1989) 6.2 to replace the 350 gasser

1979 K5 Blazer Replacing 350 with a 6.2 CUCV engine. More to come.

1997 K2500 Silverado 6.5 TD, Extend Cab, Short Box, with a NV4500. It has a straight exhaust with a turbo master and boost about 12 psi. My plans are to convert to a DB2.
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Old 02-27-2013, 12:05 PM   #14 (permalink)
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Change the gear ratios front and rear or dont do it at all.

06 Chevy LT1 CCSB 4x4 LBZ 305/55R20 ATZ 20x9 XD Badlanders
00 Chevy 3500 4x4 6.5TD 4.10's Crew Cab Dually 4L80
95 Chevy 1500 Z71 6.5TD 3.73's AMSOIL Buddy 6 Banger
94 Chevy 3500 4x4 6.5TD 4.10's Dually NV4500
93 GMC 3500 4x4 6.5TD 4.10's C&C Dually NV4500
93 GMC 3500 4x2 6.5TD 4.10's Crew Cab Dually 4L80
82 GMC 1500 6.2 700R4 (being gutted)
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Old 02-27-2013, 01:10 PM   #15 (permalink)
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Originally Posted by tanman_2006 View Post
Change the gear ratios front and rear or dont do it at all.

Watch someone "borrow" the truck and put it into 4x4....OPPPS.
1999 Ford E-350 7.3L Power Stroke Club Wagon, 3.55
1990 Ford E-350 7.3L IDI Club Wagon, 3.54LS x2
1994 Chevrolet C2500 6.5L TD, 3.42
1981 VW Rabbit Pickup 1.6L N/A x2
1978 VW Rabbit 1.5L N/A

================================================== ==
140amp 1996 alt. May 2016 / HO Water pump, Fan Clutch (used OEM), Crank Pulley-Aug 2015 /Stanadyne PMD installed 6/13 replaced- reinstalled D-Tech ,Soot Trap Delete Jan 18, 2014 / Heath TurboMaster Dec 22, 2013 / New OPS (BWD), OPS Relay mod,
black Stanadyne PMD w/ #5-June 2013 / Dorman relocation kit, D-Tech PMD to bumper, #9 resistor- Jan 2013 / Carter Lift Pump, P74143 10-15psi, 32gph- Dec 2012 / Brought home Dec 17, 2012

Other then that, the Chevy is STOCK.

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