71 thunderbird in drive it takes off slow then i have to switch it in low gear to get going good the tranny has been rebuilt it burns gas alot what could it be

Asked by Anthony Aug 06, 2015 at 08:41 AM about the 1971 Ford Thunderbird

Question type: General

i got a 71 thunderbird with a 429 motor when i put it in drive it takes off slow so i put it in
a lower gear just to get more speed im burning gas like no othe

1 Answer
15,895

Larry answered 9 years ago

Be sure the transmission oil is full and the proper type! As far a gas mileage, when it was new it didn't get 12 mpg so it should do less now with ethanol.

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