Barrier said:Gears will certainly NOT improve engine life... you have it backwards my friend. If you upgrade from a 3.23 gear setup to a 3.73, instead of the engine having to turn the pinion 3.23 turns for every 1 ring gear turn, it has to turn it 3.73 turns now... more work for the same speed, thus more stress...now because it's working harder for the same speed, the accel is better, but your top speed (I'm talking redline top speed not draft, I know in our case it helps us get closer to redline thus better top speed) is shortened and the stress on your engine is heavier. Thus shorter life in normal circumstance.
silver04stang said:I saw a MAC O/R for about $160 shipped on ebay. I'm sure you could get it installed easy for under $140.
the98stang said:Thank you for proving him wrong...
svttech76 said:too bad he's not wrong.nothing was proven wrong there.
Many of your guys on here take a super simplistic veiw of how engines wear and just assume higher RPM's equall more wear and tear. In fact many other factors come into play in how a engine will wear.
Do you realize that gears reduce the work load the engine has to endure. No bet you never thought of that one. the engine turns a higher RPM but works LESS at a given MPH/ throttle percentage. simply put eninge LOAD is a way bigger factor in engine wear than increasing the cruise RPM on the highway by 700rpm's or so.
In fact many ford cars and trucks come with 3.73 or higher gear ratios and last just as long if not longer than a mustang with 3.27 gearing.
sure if you took two cars one with 3.27's and one with 4.10's and put them on a dyno and ran them at 70 MPH at the same percentage load the 3.27 engine would not wear as much. BUT the real world has hills and in the real world you change speed. and thats where the car with steeper gears saves engine wear. So I think engine wear as a reason not to get gears just don't make sense.
the98stang said:ok ok so I was wrong lol...but modding any car in any way is going to affect the engine lifespan somewhat. And I agree, staying away from gears because they "cause engine wear" is silly. Although aftermarket gears lessen the load, the piston's are still cycling more revolutions per minute at a given speed, therefore causing more wear, versus stock. May not cause a lot of wear, but it's still occuring.
All in all, I'd say the benefits succeed the negative outcome with gears
svttech76 said:too bad he's not wrong.nothing was proven wrong there.
Many of your guys on here take a super simplistic veiw of how engines wear and just assume higher RPM's equall more wear and tear. In fact many other factors come into play in how a engine will wear.
Do you realize that gears reduce the work load the engine has to endure. No bet you never thought of that one. the engine turns a higher RPM but works LESS at a given MPH/ throttle percentage. simply put eninge LOAD is a way bigger factor in engine wear than increasing the cruise RPM on the highway by 700rpm's or so.
In fact many ford cars and trucks come with 3.73 or higher gear ratios and last just as long if not longer than a mustang with 3.27 gearing.
sure if you took two cars one with 3.27's and one with 4.10's and put them on a dyno and ran them at 70 MPH at the same percentage load the 3.27 engine would not wear as much. BUT the real world has hills and in the real world you change speed. and thats where the car with steeper gears saves engine wear. So I think engine wear as a reason not to get gears just don't make sense.
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