blackls1ta00

iTrader: (27)

which gear wud be best for stock tires 275s 6800rev limit with 150 shot through 1/4 mile trap?

Top Fuel

iTrader: (8)

150 shot + the mods in ur sig? neither I would look at a 3.73 or 3.90

FirstYrLS1Z

iTrader: (4)

to answer the original question.4.10s',but because of the power,even those might be too much gear.
what kind of rearend,not indicated in sig ?

rpmauto

iTrader: (14)

27" tire would be better with 4.10's. You will run outta gear witha 26

SS SLP2

iTrader: (8)

I agree with all the above, I think with 26" and 4.10 you will run in to 4 th ( OD), and for sure if running 4.30, I think 3.90 with 26",or 27" with 4.10, with your mod AND 150 shot, you may be rite on the edge of shifting into OD
JUST MY .02'
Johnny

Oldsmobility85

iTrader: (1)

My car has a 4.10 with a 28" tire and traps 100mph on the motor in the 1/8th and goes through the traps at 6200rpm. I know that would be very close to my 6800 rpm limit in the quarter.

blackls1ta00

iTrader: (27)

im trying to decide which rearend to buy im thinking a dana 60 with spool.i guess i could do 27 tire,cud i do a 28 without modifying anything?,and thanks for responses.only thing is with a spool is i drive on the street alot,how much more wud a wavetrac be?

smokinponcho73

iTrader: (6)

I have 4.30's and I run out of gear on my 26" tires with a 7k rev limiter. I am trapping 121. I would suggest 28" tires. They will give you more sidewall and allow for a lower gear ratio.

garygnu

run the tallest gear and tire with NOS and short shift by 500 rpm at least.you make a alot of torque and down low with nos.torque is what moves weight ,no need to over rev it.the tall tire with the tall side wall helps dealing with the torque spike.don't purge the nos before lunching,unless you have the best suspension that is tuned .

filmnews

iTrader: (2)

3.90 is the way to go

filmnews

iTrader: (2)

My Mach 1 run traps 119 with 4.10 gears and a 100 shot.

gregrob

iTrader: (8)

Lol..

BrianSF-GA

OP ... on the stock tire OD (25.6") 4.10's are border line in the 1/4 for your mods. You would be trapping at 128 mph ... mid-10's. You are leaving no room for improvements to go faster unless you go to a 28" tire (138 mph trap) or a higher gear (lower numerically) as "Top Fuel" suggests. I am thinking that with a 150-shot, your mph's will be higher than a na car. You may be shifting into fifth with stock OD's and 4.10's well before trapping even with a mid-10 second run.