Gear question

[cori00]

i BOUGHT A MUSTANG MINI STOCK IM WANTING TO RUN A 3/8 MILE TRACK IT HAS A 2.14 2ND GEAR AND A 3.45 REAR GEAR. IT HAS 13IN RACING TIRES ON IT NOW THE CLASS I WANT TO RUN. RULES SAY DOT TIRES I WOULD LIKE TO SWITCH TO 14IN SO I GUESS MY ????? IS WILL A 2.14 2ND GEAR& A3.45 REAR WITH 14IN TIRES BE A GOOD STARTING POINT. OR SHOULD I MOVE REAR GEAR TO A 3.55 MOTOR HAS DECENT HP.????? also what would be a good starting point on wheel spacing all help is greatly appeciated

[Dirtman29]

i BOUGHT A MUSTANG MINI STOCK IM WANTING TO RUN A 3/8 MILE TRACK IT HAS A 2.14 2ND GEAR AND A 3.45 REAR GEAR. IT HAS 13IN RACING TIRES ON IT NOW THE CLASS I WANT TO RUN. RULES SAY DOT TIRES I WOULD LIKE TO SWITCH TO 14IN SO I GUESS MY ????? IS WILL A 2.14 2ND GEAR& A3.45 REAR WITH 14IN TIRES BE A GOOD STARTING POINT. OR SHOULD I MOVE REAR GEAR TO A 3.55 MOTOR HAS DECENT HP.????? also what would be a good starting point on wheel spacing all help is greatly appeciated

Your gearing should work on a 3/8 track...with taller 14" tires IMO. All depends on how many RPMs you want to turn it.

[cori00]

Thanks dirtman29 the guy I bought car from said engine stops making horse power around 6600to6700rpm

[Milford Motorsports]

I'm assuming you are running asphalt.A 14in. tire with a run out of around 77in. will put you around 8000 rpm going into the turns.I do not understand why a 2.3 would stop pulling at 6700 unless it was bone stock with a stock cam.Any 2.3 with the head milled .100 or more,a moderate cam and GOOD valve springs will pull to 8000 easy!

[Dirtman29]

Thanks dirtman29 the guy I bought car from said engine stops making horse power around 6600to6700rpm

If it stops @ 6700, its not a decent HP engine. Unless it has an adj. cam gear that is set way off! Or like milford said, its a totally bone stock engine. With your current setup, you will be floating valves halfway down the straights.

[Antonior]

Gear is the vital part of vehicle to get into speed. Especially when it is a case of sports car gear is meant for maintaining all its thrust. Similar to its structure like teeth it holds on like cog and transmits the torque.