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#2382553 - 10/05/17 03:41 PM 904 vs glide
10sec.dart Offline
member

Registered: 05/13/12
Posts: 70
Loc: sioux falls, sd
I'm currently running a 904 with a break and 8" ultimate converter, tranny works well but keeping the front end down is a challenge, the car is light and 96 " wheel base, I'm putting even more power to the car this winter and I am planning in putting in a powerglide to try and tame down the launch, I've seen a lot of post comparing 727 to glides but not 904 to glide, just seeing what other peoples opinions are, am I making a big mistake???

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#2382572 - 10/05/17 04:05 PM Re: 904 vs glide [Re: 10sec.dart]
John Brown Offline
super stock

Registered: 05/28/12
Posts: 724
Loc: South Bend
You could maybe change the 904 so it has the same first gear as whatever the glide you chose to run would have and still keep all three speeds. Win-win, imho.
_________________________
July 19th should be "Drive Like Rockford Day". R.I.P. Jimmie.

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#2382581 - 10/05/17 04:27 PM Re: 904 vs glide [Re: 10sec.dart]
madscientist Offline


Registered: 09/17/14
Posts: 1689
Loc: Washington
Originally Posted By 10sec.dart
I'm currently running a 904 with a break and 8" ultimate converter, tranny works well but keeping the front end down is a challenge, the car is light and 96 " wheel base, I'm putting even more power to the car this winter and I am planning in putting in a powerglide to try and tame down the launch, I've seen a lot of post comparing 727 to glides but not 904 to glide, just seeing what other peoples opinions are, am I making a big mistake???


Why can't you tune the chassis to keep the front end down? That seems a better fix than taking gear away. Unless you are over 1000 HP.
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Just because you think it won't make it true. Horsepower is KING. To dispute this is stupid. C. Alston

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#2382593 - 10/05/17 04:51 PM Re: 904 vs glide [Re: madscientist]
MR_P_BODY Offline
Master

Registered: 06/13/03
Posts: 50346
Loc: Romeo MI
Whats the chassis in it.. you could put a
4 link in it... very simple to put in and
it gives you all the adjustment you will
need.. the pic I have here in my sig is
for show and tell.. looks cool way up but
thats not the normal way it launches...
this other pic is the normal launch
wave


Attachments
5-108.JPG


_________________________

W-9 8.94 @ 151 NOW ON E-85
Mike "Raff"...(180)Watching over us
CAR IS FOR SALE

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#2382595 - 10/05/17 04:54 PM Re: 904 vs glide [Re: 10sec.dart]
CMcAllister Offline
top fuel

Registered: 12/30/05
Posts: 1842
Loc: Fulton County, PA
No idea what your combo is, but we've been through this. The 2.45 904 was quick in 60', when it hooked. 2 or 3 good runs, and then turning the tires when the track got marginal, was not a recipe for success. Went to a 1.76 2 speed and turned the car into a turd. Made the suspension as aggressive as I could and it still wouldn't move. A 1.96 gear set and the car was mint. 60s came right back to where the 904 had been, but it was not such a slave to the track conditions.

If the SLR is out of whack, all the chassis tuning in the world will not make it as good as it can be. A 4 link gives you a bigger window over ladder bars if you have too much gear. Cubic inches, stroke, suspension type, weight and percentages, what kind of racing you're doing, and a hundred other things enter in to it. There are gear sets available for the 904 but they aren't cheap. Neither are the good Glide gear sets. But a light car (<2500# or so) with enough power to get into the low nines and a short wheelbase will be easier to get right with the 2 speed.

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#2382652 - 10/05/17 06:55 PM Re: 904 vs glide [Re: 10sec.dart]
10sec.dart Offline
member

Registered: 05/13/12
Posts: 70
Loc: sioux falls, sd
Thanks, I think I will go with the lower gear set and the glide, maybe a low 1.90

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#2382710 - 10/05/17 08:30 PM Re: 904 vs glide [Re: 10sec.dart]
polyspheric Offline
top fuel

Registered: 10/10/07
Posts: 2291
Loc: New York
Another alternative with no results reported yet:
Powerglide with Gear Vendors as the tailshaft.
Ratios:
1st 1.82:1
1st + OD 1.42:1 (recovers 78%)
2nd 1.00:1 (recovers 71%)
O/D .778:1 (recovers 78%)
Overall range (1st to high gear) 2.34:1 (slightly taller than 904)
Use it with higher numerical axle: your desired ratio X 1.42 to get the same ratio in O/D

Advantages: very strong small package, 4 speeds with very tight RPM drops, easy to get spares.
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Boffin Emeritus

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#2382815 - 10/06/17 12:05 AM Re: 904 vs glide [Re: 10sec.dart]
MoparBilly Offline
master

Registered: 01/20/03
Posts: 4177
Loc: Phoenix, AZ
10sec.dart
Do you just like tinkering with the little Arrow, or how did the other changes work out?

Did the 8 inch 5500 stall improve the car over the old converter?
Did you actually change the wheelie bars to solid uppers?
What gear did you take out of the car when you went to 4.89s?

You ask a bunch of questions, then leave us hanging on the results. How did your season actually go?
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#2382967 - 10/06/17 12:22 PM Re: 904 vs glide [Re: MoparBilly]
10sec.dart Offline
member

Registered: 05/13/12
Posts: 70
Loc: sioux falls, sd
Yes your right I'm not very good with updates, so I did go with the solid upper bars, I like it a lot better, I did go with the 5500 stall converter and actually lost about a tenth , and about 5 mph in the quarter, but my lights were nice and consistent and the car was to, all in all the car is working good, now I can't leave anything alone, I'm going w9's this winter and a bigger cam, and changing to a glide, I'm hoping with going to the glide with the extra power it's going to have I won't be fighting the wheelie like before, my brother has the glide and we are going to trade transmissions, but Iam going to put the lower first gear in it, I put the 4.89s in for a heads up deal that got rained out, so I never did get to make a pass with them, so I put the 4.44 back in for quarter mile


Edited by 10sec.dart (10/06/17 12:24 PM)

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#2383175 - 10/06/17 08:26 PM Re: 904 vs glide [Re: 10sec.dart]
Cab_Burge Offline
Too Many Posts

Registered: 08/23/03
Posts: 29728
Loc: Bend,OR USA
Have you thought about a 3 speed Pro Flyte with a 2.20 or higher 1st gear ? If not that might be your best choice shruggy work Contact Dave Smith at Pro Trans, 661-940-7400 scope
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Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

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#2383221 - 10/06/17 09:52 PM Re: 904 vs glide [Re: 10sec.dart]
70b1dart Offline
enthusiast

Registered: 01/31/11
Posts: 255
Loc: st.louis,mo.
you can always leave in 2nd gear ,also do you have travel limiters on the from,whats your rear end ratio,rear tire size,i would do everything i can first to tune the chassis

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#2383268 - 10/06/17 11:55 PM Re: 904 vs glide [Re: 10sec.dart]
J_BODY Offline
I Live Here

Registered: 04/30/03
Posts: 11179
Loc: aZLiViN
Face it..... go glide. All the cool kids do it!

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#2383280 - 10/07/17 12:40 AM Re: 904 vs glide [Re: J_BODY]
WHITEDART Offline
top fuel

Registered: 10/06/11
Posts: 2011
Loc: bean town
You can go pretty fast with a marginal chassis when using a Glide. But it takes horsepower. out west we typically race on very crappy tracks.. it requires quite a bit of front-end travel to go A to B.. what is the intended application
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In the 8s N/A.with Brett miller W8
Ultra street nmca

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#2383365 - 10/07/17 10:37 AM Re: 904 vs glide [Re: WHITEDART]
MR_P_BODY Offline
Master

Registered: 06/13/03
Posts: 50346
Loc: Romeo MI
Sounds like you just want to change it.. you
can adjust it out with good shocks.. loosen
up your rear shocks some... and tighten up
the fronts.. you might have to put some
travel limiters on the fronts.. what shocks
are on it right now
EDIT
junk shocks will NOT do the job
wave


Edited by MR_P_BODY (10/07/17 10:38 AM)
_________________________

W-9 8.94 @ 151 NOW ON E-85
Mike "Raff"...(180)Watching over us
CAR IS FOR SALE

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#2383398 - 10/07/17 11:34 AM Re: 904 vs glide [Re: 10sec.dart]
justinp61 Offline
master

Registered: 10/01/03
Posts: 9168
Loc: W. Kentucky
If I were running a light weight car, even medium powered it would have a glide in it. Like the 9" it is well supported by the aftermarket.

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#2383413 - 10/07/17 11:50 AM Re: 904 vs glide [Re: justinp61]
MR_P_BODY Offline
Master

Registered: 06/13/03
Posts: 50346
Loc: Romeo MI
I didnt need a glide... I can control what ever
height I want to leave at with the 4 link.. I sold
the glide to a guy that I built a chassis for..
he is running a BB in it.. the 727 that I put in
never gave me any issue
wave
_________________________

W-9 8.94 @ 151 NOW ON E-85
Mike "Raff"...(180)Watching over us
CAR IS FOR SALE

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#2383431 - 10/07/17 12:28 PM Re: 904 vs glide [Re: J_BODY]
CMcAllister Offline
top fuel

Registered: 12/30/05
Posts: 1842
Loc: Fulton County, PA
Originally Posted By J_BODY
Face it..... go glide. All the cool kids do it!


Really nothing to do with fashion. It's all about SLR. A 904 would work fine if you get 1st gear right. And if it has a real tight powerband and benefits from less RPM drop on the gear change, it would work better. Pro Trans sells gear sets with a much larger selection of ratios than is available for Glides, so you can get 1st gear exactly where you want it. Sort of like the difference between a 9" and a D60.

I like the 904. Unlike the 727, I think it's just as fast as a Glide when properly done. But durability, aftermarket cases and parts support, converter selection, cost until you get into a real high end unit, all favor the 2 speed.

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#2383586 - 10/07/17 07:43 PM Re: 904 vs glide [Re: CMcAllister]
J_BODY Offline
I Live Here

Registered: 04/30/03
Posts: 11179
Loc: aZLiViN
Originally Posted By CMcAllister
Originally Posted By J_BODY
Face it..... go glide. All the cool kids do it!


Really nothing to do with fashion. It's all about SLR. A 904 would work fine if you get 1st gear right. And if it has a real tight powerband and benefits from less RPM drop on the gear change, it would work better. Pro Trans sells gear sets with a much larger selection of ratios than is available for Glides, so you can get 1st gear exactly where you want it. Sort of like the difference between a 9" and a D60.

I like the 904. Unlike the 727, I think it's just as fast as a Glide when properly done. But durability, aftermarket cases and parts support, converter selection, cost until you get into a real high end unit, all favor the 2 speed.


I'm not a cool kid.... I'm putting a 904 in mine smile

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#2383616 - 10/07/17 08:41 PM Re: 904 vs glide [Re: J_BODY]
WHITEDART Offline
top fuel

Registered: 10/06/11
Posts: 2011
Loc: bean town
my Glide is 12 lb heavier than my 904.. it's in and ATI super case.. if anybody wanted to know....
_________________________
In the 8s N/A.with Brett miller W8
Ultra street nmca

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#2384473 - 10/09/17 01:00 PM Re: 904 vs glide [Re: WHITEDART]
10sec.dart Offline
member

Registered: 05/13/12
Posts: 70
Loc: sioux falls, sd
Did you like the change from the 904 to the glide?

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