The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - 2001 Chevrolet silverado 2500, 6.0, 4x4 Short Bed

**hatzie** · 04-13-2023, 04:07 PM

I have a 2005 K2500HD Ext cab 6' bed with the LQ4 6.0L, 4L80E, NV263, 4.11 gears, and 265/75AT17 tires.
I get 11-12 mpg local and 13-14 mpg highway.

Slightly better MPG than my 1975 K20 with a 350 (5.7L) with a Quadrajet on an Edelbrock Performer intake, Jacobs Ignition, TH700R4, NP208, 3.73 gears, and 265/75R16 tires that typically got 10-11 around home and 12-13 highway. The LQ4 has a whole lot more get up and go than the 350 did.

The LQ4 in my T800 K2500 is a 366 CI (6.0L) engine with shorter rear gears.
The LQ4 has power on par or better than an LE8 454 (7.4L) truck engine without guzzling fuel like that beast.

LQ4 366 is 330hp and 370ft-lbs
LE8 454 is 230hp and 360ft-lbs

That looks like a nice machine.
Look over the transfer case for a leaking tail section. The oil pump eats holes in the case.

04-13-2023, 04:07 PM	#3
hatzie Moderator Join Date: Oct 2008 Location: Wentworth, NH Posts: 4,915	Re: 2001 Chevrolet silverado 2500, 6.0, 4x4 Short Bed I have a 2005 K2500HD Ext cab 6' bed with the LQ4 6.0L, 4L80E, NV263, 4.11 gears, and 265/75AT17 tires. I get 11-12 mpg local and 13-14 mpg highway. Slightly better MPG than my 1975 K20 with a 350 (5.7L) with a Quadrajet on an Edelbrock Performer intake, Jacobs Ignition, TH700R4, NP208, 3.73 gears, and 265/75R16 tires that typically got 10-11 around home and 12-13 highway. The LQ4 has a whole lot more get up and go than the 350 did. The LQ4 in my T800 K2500 is a 366 CI (6.0L) engine with shorter rear gears. The LQ4 has power on par or better than an LE8 454 (7.4L) truck engine without guzzling fuel like that beast. LQ4 366 is 330hp and 370ft-lbs LE8 454 is 230hp and 360ft-lbs That looks like a nice machine. Look over the transfer case for a leaking tail section. The oil pump eats holes in the case. __________________ 1959 M35A2 LDT465-1D SOLD 1967 Dodge W200 B383, NP420/NP201 SOLD 1969 Dodge Polara 500 B383, A833 SOLD 1972 Ford F250 FE390, NP435/NP205 SOLD 1976 Chevy K20, 6.5L, NV4500/NP208 SOLD 1986 M1008 CUCV SOLD 2000 GMC C2500, TD6.5L, NV4500 2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263 2009 Impala SS LS4 V8 RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials... 1973-1991 GM Light Truck Service, Unit/Overhaul, Wiring Manuals, Parts Books and Some 1968-1999 GM Service Training textbooks in PDF 1988-1998 GMT400 CK service manual project 1988-1993 GMT400 CK parts books. 1967-1972 GM Light, Medium, & Heavy Truck Service Manuals in PDF Please include at least the year and model in your threads. It'll be easier to answer your questions. And please let us know if and how your repairs were successful. Last edited by hatzie; 04-13-2023 at 04:23 PM.