The Mustang Forum for Track & Racing Enthusiasts

Taking your Mustang to an open track/HPDE event for the first time? Do you race competitively? This forum is for you! Log in to remove most ads.

  • Welcome to the Ford Mustang forum built for owners of the Mustang GT350, BOSS 302, GT500, and all other S550, S197, SN95, Fox Body and older Mustangs set up for open track days, road racing, and/or autocross. Join our forum, interact with others, share your build, and help us strengthen this community!

At what point do you change your engine/transmission as a maintenance procedure?

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

Duane Black

Curbs go brrrppp
567
401
Exp. Type
Time Attack
Exp. Level
5-10 Years
Durham, NC
My daily driver/autocross car/track car has made it to 156000 miles. I estimate that about 7000 of these miles were in a track environment.

Its the 3.7 v6 duratec block. I've checked on ebay... Ive no intention of spending 5.0 coyote money. I can find 30-80k mile engines for $1000.

I know the right answer is a leak down test. I have a kit but its on loan. I need to do that....

My cars highway mileage used to easily be 25. 27 was possible. its lucky to get 23 these days. gas is cheaper... but i know it could be a sign of a weak engine too. The 3.55 gears over the factory 2.73 doesn't help
 

TMO Supporting Vendors

Top