ok fellas iam driving my 87 t type as a daily driver with 36inj,tt chip,walbro,hot wire,all the rest is stock i just did a COMPLETE spring cleaning it runs smooth as silk with lots of power iam only getting 13 MPG with about 50/50 street/higway driving!!!is this pretty mutch what every one is getting in a comparable car?:biggrin:
what your MPG
- Thread starter 1986TR
- Start date
cruising i get 25:biggrin: really i am!!!!
Last year driving to and from the race track 100 miles each way, I was getting 24mpg with 009's, TE60, Prec. Stock Loc. I/c running 11.40's @ 118mph then driving back home.
Driving nicely :biggrin: I usually get about 22-25mpg. Now when Im on it probably 1gallon per mile!:biggrin:
Driving nicely :biggrin: I usually get about 22-25mpg. Now when Im on it probably 1gallon per mile!:biggrin:
Adam Connell
Monster Truckin since 87'
- Joined
- Oct 1, 2006
I have done 24 on the highway running 65-75ish... I think I average 15-18 cruising... but there are quite a few good burst... when I got out cruising I got to the hot spots if you catch my drift... still 13 sounds low. I dont think I have gotten that low using E85 and that stuff kills your mileage.
1986TR -
check to make sure your lock-up converter is actually working. you may have to have someone who knows transmissions verify this as the solenoid may be functioning (you can hear it click) but the lock-up clutch mechanism may be malfunctioning or disabled.
I couldn't figure out why I couldn't get better than 17 mpg with my '87 GN until I recently discovered the lock-up mechanism was disabled by the previous owner. I have no idea why this was done since the torque converter is just a restalled D5.
the solenoid still clicks, but no lock-up.
you also need to check your tune, make sure you're not too rich at part throttle conditions.
HTH
Rob
check to make sure your lock-up converter is actually working. you may have to have someone who knows transmissions verify this as the solenoid may be functioning (you can hear it click) but the lock-up clutch mechanism may be malfunctioning or disabled.
I couldn't figure out why I couldn't get better than 17 mpg with my '87 GN until I recently discovered the lock-up mechanism was disabled by the previous owner. I have no idea why this was done since the torque converter is just a restalled D5.
the solenoid still clicks, but no lock-up. you also need to check your tune, make sure you're not too rich at part throttle conditions.
HTH
Rob
I'm sure you've done it, but check your air pressure on your tires often. If they are off you're going to kill gas mileage...
BlackBandit
God loves Buicks!
- Joined
- Mar 29, 2003
If I keep it at around 65 on a all highway tank I can get as high as 26-27. Around town 50/50 freeway highway driving I get around 8-13 depending on how often I put my foot in it.
corsair231
Well-Known Member
- Joined
- Jul 8, 2005
19-21 average on my dd with average driving. :smile:
3gpm.:biggrin: Actually its probably around 15mpg with a lot of WOT. Its well over 20mpg on the highway at 15.5:1 a/f. This converter couples really well cruising. I didnt buy a TR to get good gas mileage. Good gas mileage= no fun. Bad gas mileage meant i had a lot of fun. I pay about $9.00/gallon too.
If it clicks i doubt it was disabled. More than likely a leak in the TCC circuit or bad converter clutch. Maybe the o-ring was left off the input shaft.1986TR -
I couldn't figure out why I couldn't get better than 17 mpg with my '87 GN until I recently discovered the lock-up mechanism was disabled by the previous owner. I have no idea why this was done since the torque converter is just a restalled D5.
HTH
Rob
Well last year when we run the car at the super chevy it was a good 100 mile drive to and from the track, I have a no lock converter, At that time it was a stock block with 60 pound injectors, BB66 turbo, 70 TB, pump gas with alky It run 11.18 at 120 and got 23 mpg but most was interstate driving with the a/c on
About 6-7 years back when my GN was my daily driver I got anywhere from 17-21 on my 60 mile per day commute which was also 50/50 highway/local. TE44, 009's and exhaust with a little WOT getting on the highway.
Took it out for an 8 mile romp Monday and think I used over a gallon
Took it out for an 8 mile romp Monday and think I used over a gallon
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