What real world mpg are you getting?
02-14-2012, 06:56 AM
#21
Why is everyone getting so much better mileage than me? last tank I got 15mpg with mods in my sig. I admit im not easy with the throttle but I shouldn't be getting that low. I also put brand new o2 sensors in when I did my headers in december so thats not it.
02-14-2012, 07:01 AM
#22
hello ls1tech fam. How are you all getting such good milage? I have '87
c10, 5.3/4l60e, 3.73 posi traction, drive tuned, JBA shorty headers, dual exhaust, 26 inch tires. the drive tune was setup for 93 unleaded gas only. i guess the tuner tuned it for agressiveness. recorded milage 16-17mpg city/highway.
c10, 5.3/4l60e, 3.73 posi traction, drive tuned, JBA shorty headers, dual exhaust, 26 inch tires. the drive tune was setup for 93 unleaded gas only. i guess the tuner tuned it for agressiveness. recorded milage 16-17mpg city/highway.
02-14-2012, 07:21 AM
#23
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You have a relatively short tire and not overly deep gearing. With that gearing and tire you are probably turning around 2400 RPM at 70 mph. You can't do much about the weight and aerodynamics but if you go to say a 29 inch tall tire your revs will drop by 250 RPM. A 3.08 rear with your current tires will put you at 2000 RPM. Not sure how far you would want to go with a truck.
Not very good unless i go 70mph havent even tried to calculate it.
02-14-2012, 03:04 PM
#24
mpg Thanks for the advice pop n wood. my tire/rim size is approximatley 26.75 inches tall & it weighs 3800 lbs. so if i decrease the gearing to 3.08 or 3.42 will i see better milage? ive seen others with larger displacements with more mpg. with a lower gear ratio, will i loose my grunt? i may need to google gear ratios. i may need a re-tune also.
02-14-2012, 03:38 PM
#25
Sork915.. it is also in the Tune. Many Tuner are out there and will offer you a great WOT tune.. !.. but for Drivablity.. you need to have the Tuner work on the complete RPM Range for better driviablity and Gas Mileage.
I had Mark Romans (Sacramento, CA) do my tune and he is know for doing a great job on this subject.
BC
I had Mark Romans (Sacramento, CA) do my tune and he is know for doing a great job on this subject.
BC
02-14-2012, 08:44 PM
#26
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Thanks for the advice pop n wood. my tire/rim size is approximatley 26.75 inches tall & it weighs 3800 lbs. so if i decrease the gearing to 3.08 or 3.42 will i see better milage? ive seen others with larger displacements with more mpg. with a lower gear ratio, will i loose my grunt? i may need to google gear ratios. i may need a re-tune also.
http://www.snoman.com/HTML/axlecalc_5a.html
02-14-2012, 10:25 PM
#27
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Sork915.. it is also in the Tune. Many Tuner are out there and will offer you a great WOT tune.. !.. but for Drivablity.. you need to have the Tuner work on the complete RPM Range for better driviablity and Gas Mileage.
I had Mark Romans (Sacramento, CA) do my tune and he is know for doing a great job on this subject.
BC
I had Mark Romans (Sacramento, CA) do my tune and he is know for doing a great job on this subject.
BC
02-14-2012, 10:33 PM
#28
'72 SS Camaro LS1/M6 [115k on short block]H&C ,all bolt on's ,Pat G Cam 617/624,with 4:11's 25mpg @ 70mph....4:56's 23mpg @ 70mph .Rear tires are 295/50/15 ,27" tall .
27k since build ,3 PWR Tours & a bunch of shows /cruises /ect.Oh Ye it was tuned by GEOFF SKINNER ....I am very pleased with his work !
27k since build ,3 PWR Tours & a bunch of shows /cruises /ect.Oh Ye it was tuned by GEOFF SKINNER ....I am very pleased with his work !
Last edited by wantsum410; 02-14-2012 at 10:35 PM. Reason: more info
02-14-2012, 10:57 PM
#29
Sork915.. it is also in the Tune. Many Tuner are out there and will offer you a great WOT tune.. !.. but for Drivablity.. you need to have the Tuner work on the complete RPM Range for better driviablity and Gas Mileage.
I had Mark Romans (Sacramento, CA) do my tune and he is know for doing a great job on this subject.
BC
I had Mark Romans (Sacramento, CA) do my tune and he is know for doing a great job on this subject.
BC
02-15-2012, 01:20 PM
#31
On The Tree
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I am still trying to get the tune right so hopefully it goes up significantly but so far I am getting 14mpg. I hope that after I get the tune where it needs to be and learn to stay off the throttle a little more I can get somewhere around 18-19 mpg
66 Chevelle, 6.0, 4l80e, 3k PTC converter, 3.08 gears, 26" tires
66 Chevelle, 6.0, 4l80e, 3k PTC converter, 3.08 gears, 26" tires
