1/8 mile to 1/4 gearing

i know a lot of promod lenco drive cars running 5.13 and
1.40 1st gear=7.18 hit
if a guy wanted to do a few 1/4 mile races
is their a problem with using a 1.35/1.28/4.10rear=7.084 hit/2nd=5.248
and for 1/8 shifting to 2nd only=5.248
or a 1.35/1.28/3.90rear=6.739 and
1.28x3.90=4.992 2nd and would still have 3rd gear for
1/4 mile
is their any problem with doing this
or should i just go 1.40 1st and 5.13 rear and make it a 2 speed
pro mod/brad 5 4.467x4.150 psi c blower 112 od 34.5 goodyear tire
2 step and throttle controller 2650lbs
i dont want to make a 1/8 mile car only
any help on gear ratios for this i would be thankfull
ran clutch before so this is all new
thanks
duane

 

gear ratios

ok a new one
how about
1.28x1.18=1.51x4.30=6.49
1.51 1st x4.30=6.49
1.18 2nd x4.30=5.07 ratio hit
other automatic promods run 1.38x5.13=7.07 hit for 1/8 mile
so i will only shift to 2nd on 1/8 mile races
remember this is a lencodrive/coans latest promod converter and
psi c 112% C blower 2650lbs
im just trying to run mostly 1/8 mile and some1/4
will these ratios get me their or is their something better
thanks
duane

 

any updates on how this went for you as we are looking to set up our car to run a 1/4 mile race. Thanks

 

1/8 to 1/4

call me ill be in my truck driving 10 hrs monday
618-781-4703
my experience was bad and i can tell you what not to do

 

1/4

Doug, I don't know why I still think about chevy stuff but i've talked to a couple guys that run a 3 spd in the 1/8th and I think it would allow you to go faster with less rpm. I'm not sure what it will take to go 1/4 mile but I ran a 1.72/1.31 4.56 3spd and it worked good to the 1/8th with a chevy roots combo.
A legal auto roots blown car will give you some ratio ideas but that chevy will have it's tongue hanging out at the stripe.