LT1 Gas Mileage
#1
LT1 Gas Mileage
What are you automatic LT1 guys gettin as far as gas mileage goes? After my rebuild I am getting about 11 MPG and that was a week i did not get on it. Just seems like I should be gettin better than that with a 3:23 rear-end. The M6 is going in this summer. What are the LT1 with M6 getting as far as mileage? Thanks.
94' Z28, 350 LT1, forged pistons and rods, ported and polished heads with larger valves, comp 218/224 cam, 1.6:1 roller rockers, hooker headers and catback, custom tune from madZ28.com, B&M shift kit.
94' Z28, 350 LT1, forged pistons and rods, ported and polished heads with larger valves, comp 218/224 cam, 1.6:1 roller rockers, hooker headers and catback, custom tune from madZ28.com, B&M shift kit.
#2
Re: LT1 Gas Mileage
Originally Posted by HaynesFaithZ28
What are you automatic LT1 guys gettin as far as gas mileage goes? After my rebuild I am getting about 11 MPG and that was a week i did not get on it. Just seems like I should be gettin better than that with a 3:23 rear-end. The M6 is going in this summer. What are the LT1 with M6 getting as far as mileage? Thanks.
94' Z28, 350 LT1, forged pistons and rods, ported and polished heads with larger valves, comp 218/224 cam, 1.6:1 roller rockers, hooker headers and catback, custom tune from madZ28.com, B&M shift kit.
94' Z28, 350 LT1, forged pistons and rods, ported and polished heads with larger valves, comp 218/224 cam, 1.6:1 roller rockers, hooker headers and catback, custom tune from madZ28.com, B&M shift kit.
Check overall fuel mileage for a few fillups and 500 miles or more.
Unless you top off the tank the same each time you fill it, you really don't know how much fuel you used between fillups.
#3
Re: LT1 Gas Mileage
My LT1 is getting 3.73's in a few weeks, but other than that, all I have is a CAI. Nowhere near your mods, but FWIW, I get high teens to 20 in town (if I shave a little lead of my foot) and upper 20s on the interstate.
#6
Re: LT1 Gas Mileage
MY car is all tuned up with 2.73s and i get 11mpg as well averaged on my tank. I also have an a4. Recently i took it on the highway and was getting near 25 without even having cruise control on. My problem is short trips with long warm up time.
Any point in changing o2s if you dont get any errors and can get 25 on the highway? They aren't cheap so i don't want to di it if it wont help anything and will just wait until headers.
Any point in changing o2s if you dont get any errors and can get 25 on the highway? They aren't cheap so i don't want to di it if it wont help anything and will just wait until headers.
#14
Re: LT1 Gas Mileage
'95 Z28 M6 with 131k and averaging 19.5 with about %50 interstate and %50 city.
I think my car has a 160 thermostat, if I were to put in a stock thermo would that help mpg any? Also what is the stock one rated?
I think my car has a 160 thermostat, if I were to put in a stock thermo would that help mpg any? Also what is the stock one rated?