Gearing

[bdusted440]

If I’m hitting 6200 RPM which is my red line 200 to 300 feet before the trap with a set of 430 gears 275 6015 drag radials what should I step down to like 410s?

 

[Bad Sport]

Put a little taller tire on it.

 

[bdusted440]

Put a little taller tire on it.

Won’t fit. This is big as I can go

 

[SGBARRACUDA]

Does it quit making power at 6200? Not knowing your build, maybe up the red line? Or 4.10's will probably get you there.

 

[brian6pac]

To get 10 more mph the gear it would be 3.97 so I would go 3.91
Without much info I just used 6200 rpm and 28" tires 120 mph = 4.31 gear
put in 130 mph and it said 3.97 gear

 

[moper]

If it's auto, what is your convertor slippage? You should be able to calculate it.

 

[bdusted440]

If it's auto, what is your convertor slippage? You should be able to calculate it.

Not sure I went to Midwest converters and they gave them all the specs of my motor trans and rear end in car and they build me a converter . supposed to be a 3000 stall that’s about where it stalls at.

 

[skrews]

4.10 should be dead nuts.

 

[bdusted440]

4.10 should be dead nuts.

Thanks