I have a 66 with a 302 and c4.1st and 2nd seem to work pretty good but 3rd doesnt engage at all.I was getting 13 mpg and now i get 7.5 cuz i dont have 3rd.Is it just tired,could i rebuild it with a friend of the family whos done it a lot,or just buy new one?And if so where could i get one thatll last but not be too expensive.I have done all kinds of motor work and rebuilt manual's before.Any help would be awesome.

 

Sounds like it's a bit worn out. You can try rebuilding it yourself, but if you're only getting 13mpg from a stock engine, you'd be best to buy a new one or letting a pro take care of it. Jeg's and Summit have complete trannies for decent prices.

 

could it just be a bad modulator?What kinda mileage should i expect.Its a 6oo holley with 1 plastic spacer?

 

Sounds like she's pretty tired, but try adjusting the bands before you spend the moolah to get her overhauled.
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