60ft improvement

darius smith

Amateur Racer
Jul 12, 2006
206
0
0
fort valley, ga
will this pick up my 60ft. by going to a 4.10 or higher gear from a 4.56. i ask this because i think that the 4.56 maybe hurting my 60ft with the th400 trans. and i also have a small tire(28x10.5) with a 5400 converter. because this would be way cheaper than switching to a glide.
 

TNTS79

Dragway Regular
Jan 6, 2006
1,252
0
0
Illiniois
I don't think 4.10's will help your 60ft if your already running 56's. Pick up a set of 4.88's if you have enough rpm to pull through the traps...
 

darius smith

Amateur Racer
Jul 12, 2006
206
0
0
fort valley, ga
the 4.10 will slow wheel speed and it will help with hitting the tires to hard as i was told. thats why guys with big cubes or a lot of n2o with small tire cars use glides because of the hi 1st gear vs 3 speeds, that what was explain to me. i have 4.88 but i doubt if i will ever use them. i dont have a tire that big and i probably what run n/a again.
 

80montecarlo

Dragway Regular
Apr 24, 2008
1,123
0
0
cloverdale b.c. canada
lots of guys run 4.88's n/a, the 4.10's are gunna slow you 60' but speed up your 1000' to 1320'
 

darius smith

Amateur Racer
Jul 12, 2006
206
0
0
fort valley, ga
80montecarlo said:
lots of guys run 4.88's n/a, the 4.10's are gunna slow you 60' but speed up your 1000' to 1320'
with .88s my wheel speed will be higher there for hurting 60ft. more and killing my e.t. by slowing down the wheel speed the car will move quicker.
 

TNTS79

Dragway Regular
Jan 6, 2006
1,252
0
0
Illiniois
sounds backwards to me, as long as your tires aren't spinning higher wheel speed= lower et... :-k

TH-400's do eat about 18 hp compared to a TH-350... I know quite a few guys that spend a little more $$ on a th-350 build rather than running a 400. Just depends on how long you want it to last I guess!
 

darius smith

Amateur Racer
Jul 12, 2006
206
0
0
fort valley, ga
TNTS79 said:
sounds backwards to me, as long as your tires aren't spinning higher wheel speed= lower et... :-k

TH-400's do eat about 18 hp compared to a TH-350... I know quite a few guys that spend a little more $$ on a th-350 build rather than running a 400. Just depends on how long you want it to last I guess!
this racing and sometime to go fast you must go slow, well i'm going to try it and see how it works plus i'm going to spray it and the 4.10s would help more.
 

darius smith

Amateur Racer
Jul 12, 2006
206
0
0
fort valley, ga
well i change gear to a 3.89 from a 4.57 and the 60ft. didnt pick up neither did the e.t. everything stayed the same. i save a ton of rpm and i come to the conclusion that it may be my converter.
 

87montess

Amateur Racer
Jul 10, 2007
169
0
0
PHILLY
darius smith said:
well i change gear to a 3.89 from a 4.57 and the 60ft. didnt pick up neither did the e.t. everything stayed the same. i save a ton of rpm and i come to the conclusion that it may be my converter.


what converter are you running. what is your trap speed and rpm i just went from 3.89 gear to a 4.30 gear and picked up 2tens
 

TNTS79

Dragway Regular
Jan 6, 2006
1,252
0
0
Illiniois
I went from 3.55's to 4.56's and picked up 2 tenths on the 60 and just over 4 on the big end... I would like to put in some 4.88's and a spool for next season...
 

darius smith

Amateur Racer
Jul 12, 2006
206
0
0
fort valley, ga
i have a 5600 converter in good air but this time of year its more like a 5400. Before i changed gears i was trapping at 7600 in the 1/4 and in hi gear before the 1/8. since i didnt run the 1/4 i cant tell but by rule of thumb its 300rpm for every gear ratio. so i'll say in the 1/4 i should trap about 6700
 

darius smith

Amateur Racer
Jul 12, 2006
206
0
0
fort valley, ga
yeah i have to do the same because that converter i'm using was behind a 14 degree 406 that made about 750hp. i bought it and stuck it behind my motor because it had the same stall(5600) that i needed. i will do that and a t-brake while i'm getting the other motor ready.
 

scuba_steve's_bu

Frequent Racer
Apr 9, 2009
440
0
0
Rock Rapids, Iowa
i changed from 3.73 to 4.11 about a month ago. my 60ft did improve a little, but also put slicks on from the drag radials too.
 

slimbo

Moderator
Staff member
May 21, 2007
4,223
0
0
www.yellowbullet.com
it all really depends on where the motor makes torque. a nitrous or big cube motor doesnt need a ton of gear. my buds nova has 3.55's and runs 10.50's and 60's in the 1.50 range. most of the time more gear is needed is to put the motor higher in the rpm range if thats where it makes torque. if your down on power usually going higher (numerically) in gear will speed it up. usually the more torque you make the less gear you need.
 

PONTIACMAN3

Frequent Racer
Feb 14, 2007
459
0
0
Manville, NJ
Slimbo I put a powerglide trans in my car with a 2500 rpm converter, it seems to come out of the hole very slow now compared to the t350 with a 5500 rpm converter, what should i do???????
 

64chevelle

Weekend Racer
Dec 10, 2010
61
0
0
wichita ks
With my current combo I am running 3.31 gears..It has been 10.70 with a 1.62 60" and 9.72 1.40 60'...just changed gears to a 4.10 and going to track for the last time this year tomrrow...results to come!
 
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