ok now my car has 140k miles on it and the oil pressure gauge is a little below 40, now for those who know how far would you estimate that the engine will last ?? oh and what happens when it needs a rebuild??? what the car wount run. it wount start?? i'm curious.

 

An engine needs a rebuild when it is worn out. A properly maintained LT1 can go for 200K miles without a rebuild. During a rebuild all worn parts are replaced or refurbished. This includes just about every moving part plus the engine block and heads. You can get the job done locally or order from a rebuilder. If you want to return the engine to factory speck, you can always order a Goodwrench engine. But you need to shop around, prices are all over the place

 

one more thing i get horrible gas milage, i changed plugs and wires,and now i have a horrible gas milage problems the car eats my gas quick, what could it be?

 

Whats your approx Mile Per Gallon? This occured after changin the plugs and wires?