chasing MPG's with 6.ol and 24's... 3.42/3.73? mods? cam? *what can be done*
11-25-2010, 09:40 PM
#1
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chasing MPG's with 6.ol and 24's... 3.42/3.73/4.10? mods? cam? *what can be done*
do ya'll think the 3.42 gears are hurting or helping the fuel mileage?
i get around:
14.3mpg @70mph
13.4mpg @75mph
11.1mpg around town
i am averaging 12.5mpg
i have a set of 3.73's i could get installed if it would help out...or buy 4.10's
i'm just wondering because of it being a crew cab and with 24x10 wheels and 32.5" tires if the 3.42's are makin the truck lug alittle... i am at around 1680ish@70mph and 1800ish@75mph and 1940ish@80mph
this is a 2wd truck with low pro's just letting everyone know... its not a 4x4 with 33" mud tires...lol
i already have the 3.73's so thats why i am askin if the 3.73 or 3.42 are better for me...or do i need to buy 4.10
mods are:
6.oL
pacesetter lt's
pacesetter ORY
K&N with modded air box
05 electric fans
RWTD tune
help me out with some thoughts what can i do (NOT REMOVING WHEELS
) to help get the millage up...
STOCK FOR STOCK.... what gets better MPG 3.42's or 3.73's or 4.10's???
here is a pick of the truck
i get around:
14.3mpg @70mph
13.4mpg @75mph
11.1mpg around town
i am averaging 12.5mpg
i have a set of 3.73's i could get installed if it would help out...or buy 4.10's
i'm just wondering because of it being a crew cab and with 24x10 wheels and 32.5" tires if the 3.42's are makin the truck lug alittle... i am at around 1680ish@70mph and 1800ish@75mph and 1940ish@80mph
this is a 2wd truck with low pro's just letting everyone know... its not a 4x4 with 33" mud tires...lol
i already have the 3.73's so thats why i am askin if the 3.73 or 3.42 are better for me...or do i need to buy 4.10
mods are:
6.oL
pacesetter lt's
pacesetter ORY
K&N with modded air box
05 electric fans
RWTD tune
help me out with some thoughts what can i do (NOT REMOVING WHEELS
) to help get the millage up...STOCK FOR STOCK.... what gets better MPG 3.42's or 3.73's or 4.10's???
here is a pick of the truck
Last edited by denali_on_26's; 12-05-2010 at 10:48 PM.
11-25-2010, 09:50 PM
#3
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you are prolly getting the same but the taller tires revs arent reflecting on your mpg numbers
3.73s wont get you any where imo, go 4.10
edit: sorry, with a 6.0 you should be glad
a tune can be both performance and mpg
by tuning wot you can get what you want and with normal driving you could achive great numbers for your setup
shot a messege to black bear,Justin might help you the best
3.73s wont get you any where imo, go 4.10
edit: sorry, with a 6.0 you should be glad
a tune can be both performance and mpg
by tuning wot you can get what you want and with normal driving you could achive great numbers for your setup
shot a messege to black bear,Justin might help you the best
Last edited by sand man; 11-25-2010 at 09:59 PM.
11-26-2010, 07:44 AM
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There's a reason GM only used 3.42s with the 4-speed auto for a couple of years. The gas mileage was worse because they cause the engine to lug and you have to use excessive gas pedal input versus a 3.73 or 4.10. Your 6.0 should help on that situation.
Your mileage already isn't bad, considering. You say you won't ditch the wheels but that's the fastest way to gain mileage - dump the heavy-a$$ed wheels. Other than that, as already stated, get a tune for mileage at normal cruise rpms.
Your mileage already isn't bad, considering. You say you won't ditch the wheels but that's the fastest way to gain mileage - dump the heavy-a$$ed wheels. Other than that, as already stated, get a tune for mileage at normal cruise rpms.
11-26-2010, 08:24 AM
#5
I'm getting 15-16 going 80-85 on the freeway
it's a 3/4 ton, crew cab, 4wd
33" MT Toyos, on heavy 16" wheels
Stock LQ4, L92 heads/intake
SD tune (speed density)
224/230 .581 .591 -110
1-7/8 LTs
05 fans
90mm Tb - 42lb injectors
complete stock exhaust (cats and muff)
Old setup was getting 10-12 going 80-85
stock 317s,
TB SS intake, 87 TB
complete stock exhaust (manifolds, cats, muff)
MAF tune
same cam,
same tire/wheel setup
A dialed in tune can make all the difference in the world
it's a 3/4 ton, crew cab, 4wd
33" MT Toyos, on heavy 16" wheels
Stock LQ4, L92 heads/intake
SD tune (speed density)
224/230 .581 .591 -110
1-7/8 LTs
05 fans
90mm Tb - 42lb injectors
complete stock exhaust (cats and muff)
Old setup was getting 10-12 going 80-85
stock 317s,
TB SS intake, 87 TB
complete stock exhaust (manifolds, cats, muff)
MAF tune
same cam,
same tire/wheel setup
A dialed in tune can make all the difference in the world
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12-05-2010, 07:59 PM
#8
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i think RWTD put my AFR@14.1 i think...
i'm thinking i want it around 15.5 anyone think that would be to lean on cruising?
i'm thinking i want it around 15.5 anyone think that would be to lean on cruising?
