Low gear set 904, pro’s and Con’s

[B3422w5]

Giving some thought to maybe installing a low gear set when tranny gets freshened.
cars weighs 3350, always hooks, has what I consider a lazy 60.
yea or nay?

 

[RustyRatRod]

I've never seen what all the hooplah was. A bodies are so dang light, they just don't need the low gear set. I'd love to see some comparisons between the two. You can do anything to a car to the point of diminished returns.

 

[B3422w5]

I've never seen what all the hooplah was. A bodies are so dang light, they just don't need the low gear set. I'd love to see some comparisons between the two. You can do anything to a car to the point of diminished returns.

3350 is considered heavy for a drag car. From the little bit of research I have done, a heavy car like mine should see some benefit….but…that is why I posted to get others takes on it

 

[RustyRatRod]

3350 is considered heavy for a drag car. From the little bit of research I have done, a heavy car like mine should see some benefit….but…that is why I posted to get others takes on it

I have no clue why the HELL I missed the weight. Yeah with that much of a fatass, the low gear set might show an advantage.

 

[a-bodyguy]

helps not just the weight but 3.23s and 3.55s if you wantto run them

 

[B3422w5]

I have no clue why the HELL I missed the weight. Yeah with that much of a fatass, the low gear set might show an advantage.

haha…the driver is 330….but it’s good weight

 

[jimjimjimmy]

i can't say anything negative about my low gear set .

 

[Killer6]

haha…the driver is 330….but it’s good weight

Not a pro-drag guy here, but the hardest part is the start. I'd say if You've got the right converter for the engine, it would be a plus in this instance.

 

[GTX JOHN]

We Always use 2.75 in our stockers at that weight even though
they are 500+ HP. Expect close to a full tenth in your 60 if ir still Hooksd!

 

[ValiantRacing]

I love the low gear set, run them in all my cars. I like going 1.40 in 60 feet

 

[RustyRatRod]

haha…the driver is 330….but it’s good weight

Well.....I was talkin about the car. LOL

 

[justinp61]

haha…the driver is 330….but it’s good weight

Darn Don, you're like 1.8 of me. LOL

 

[B3422w5]

Darn Don, you're like 1.8 of me. LOL

aaarrrggg

 

[1bad360duster]

We Always use 2.75 in our stockers at that weight even though
they are 500+ HP. Expect close to a full tenth in your 60 if ir still Hooksd!

What rear gear ?

 

[Brooks James]

I wouldn't spend the money to make it happen. The effect will be negligible in a light car. If you're one of those who will do anything for a 1/10 of a second, go for it. I had a buddy that scraped undercoating off a car (30 lbs) in search of the ever elusive tenth of a second, then again he was a NHRA Class racer.

 

[Lefty71]

My Big block Dart has a low gear set for the 727.... It was expensive, but the car is heavy, launches nice now and the fun factor is improved.

 

[justinp61]

aaarrrggg

 

[273]

I got a vague overall question, trying to work this out in my head how it would workout, isn't it gonna take a certain amount of mph eg.. 30-40 mph before any gearing catches up to the stall speed ? Which at that point probably at least 1/2 of the 60', more 1st will catch up slightly quicker but also have to shift a lot sooner with a wider drop ratio. Would the change have an effect on the speed it stalls at ? From what I understand lowers it. Wouldn't more stall be a better route if something is off ?

 

[B3422w5]

I got a vague overall question, trying to work this out in my head how it would workout, isn't it gonna take a certain amount of mph eg.. 30-40 mph before any gearing catches up to the stall speed ? Which at that point probably at least 1/2 of the 60', more 1st will catch up slightly quicker but also have to shift a lot sooner with a wider drop ratio. Would the change have an effect on the speed it stalls at ? From what I understand lowers it. Wouldn't more stall be a better route if something is off ?

the second gear ratio is almost the same as with a standard gearset. Very little difference.
In the case of my car, it’s kinda doggy at the hit , but really starts moving in second gear.
I expect the vert to flash a bit lower if I was to do this, but my plan, either way, is to bump the flash up about 400 rpm from where it’s at now.
I have seen in the past that picking up on a car’s 60 really wakes up an overall time slip. More than anywhere else.

 

[crackedback]

Cons, none that I've seen.

If you can do it yourself, go for it. Simple enough to swap out the set ups.

 

[B3422w5]

I wouldn't spend the money to make it happen. The effect will be negligible in a light car. If you're one of those who will do anything for a 1/10 of a second, go for it. I had a buddy that scraped undercoating off a car (30 lbs) in search of the ever elusive tenth of a second, then again he was a NHRA Class racer.

the car isn’t light, it’s 3350 with me. Have typed that several times

 

[B3422w5]

What rear gear ?

4.30….28 radial

 

[273]

4.30….28 radial

If you don't mind, What's your stall and shift points ? An e.t. & mph ?

 

[B3422w5]

If you don't mind, What's your stall and shift points ? An e.t. & mph ?

convertor flashes 4900
shift car at 6500 both times
been 10.68@ just under 125
vert is tight, very little big end slip

 

[Just Send It]

Cope did a low gear set in my 904. Unfortunately I don't have a before and after 60ft to provide since it's a new build. John seemed pretty sure it would be beneficial. I'm at 3,170lbs with me in the car