What size tire and rear gear.

[brands5.0]

I changed my whole engine set up and need some input on tire size and rear gear.

My car is a 95 mustang 3000 lbs. with driver 364 CI, AFR 205, big solid cam and spinning to 7,500 rpm and iam running a 9" percision industries 3800 stall. I am hoping to make 500 rwhp and spray the car with 250+ soon

Right now i have a 26" X 10.5" MT ET street. and a 3.73 gear.

I need new tires any way. I want to run ET drags anyway so should i step up to a 28"X 10.5 et drag and what gear would look good.

Thanks Brandon.

 

[90lxcoupe]

i would go with the 28" tire and step up to 4.10's or 4.30's, are you driving the car on the street at all.

 

[1SLO306]

i was thinking 28" with 4:10's

 

[Rick 91GT]

Brandon, can you get the car out with the 26" tires to see where you cross at?

I would go 28" if you can to help with the massive tire shock that you will have, it will require more gear however. You also need to plan on the spray it will great effect the gear ratio. I am thinking a 28" tire and a 3.90-4:10 may get you there.

Percision may be able to help you based on that slippage and specs of the converter

 

[brands5.0]

Every one is pointing my to a 28" tire and 4.10-4.30. i am picking up a set of 28" tires and running it with the 3.73 and see what she does..

Rick you should see how far i got to day, All i have left to do is put the rad. in and i dizzy. and plugs. I should fire and drive it wed. night

 

[Tonys96Cobra]

Seems like most guys at the track with 28's runs 4.10's, but with that much rpm available a 4.30 would prolly do you a little better......