I just recently bought my first vintage '78 TX440 free air couple of weeks ago. Just the other day, I had her out for the first time for a short ride - I was impressed how fast that little 440 can do. I do remembered hearing that '78 440 engines were bumped up to few more ponies over the older '76 - '77 TX 440 engines. Anyone can tell me approx what hp this thing puts out, what type of spark plugs should it use and one last question, with stock pipes, what should the motor peak revs at? Any informations, would greatly be appreciated. Thanks. WL.
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