|
Re: gas mileage
2005 2500HD 6.0 4L80E NP263HD 4x4 4.10 axles and 265/70R17 tires. 12 rural 2-lane 14 interstate.
3.73 would definitely give me better mileage but the 1" larger tires help some.
The 8.1L with 4x4 and 4.10 axles along with stock 245/75R16 tires will not do well on fuel. I'd expect 8-10 city and maybe 10-12 highway if you're lucky. It'll pull like an ox team tho.
__________________
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... 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; 10-17-2018 at 10:48 AM.
|