Re: 904 vs glide
[Re: 10sec.dart]
#2382572
10/05/17 06:05 PM
10/05/17 06:05 PM
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Joined: May 2012
Posts: 1,812 South Bend
John Brown
top fuel
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top fuel
Joined: May 2012
Posts: 1,812
South Bend
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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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Re: 904 vs glide
[Re: 10sec.dart]
#2382581
10/05/17 06:27 PM
10/05/17 06:27 PM
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Joined: Sep 2014
Posts: 4,457 Washington
madscientist
master
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master
Joined: Sep 2014
Posts: 4,457
Washington
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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.
Just because you think it won't make it true. Horsepower is KING. To dispute this is stupid. C. Alston
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Re: 904 vs glide
[Re: madscientist]
#2382593
10/05/17 06:51 PM
10/05/17 06:51 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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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
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Re: 904 vs glide
[Re: 10sec.dart]
#2382595
10/05/17 06:54 PM
10/05/17 06:54 PM
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Joined: Dec 2005
Posts: 11,408 Fulton County, PA
CMcAllister
Mr. Helpful
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Mr. Helpful
Joined: Dec 2005
Posts: 11,408
Fulton County, PA
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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.
If the results don't match the theory, change the theory.
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Re: 904 vs glide
[Re: 10sec.dart]
#2382710
10/05/17 10:30 PM
10/05/17 10:30 PM
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Joined: Oct 2007
Posts: 4,205 New York
polyspheric
master
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master
Joined: Oct 2007
Posts: 4,205
New York
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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.
Boffin Emeritus
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Re: 904 vs glide
[Re: 10sec.dart]
#2382815
10/06/17 02:05 AM
10/06/17 02:05 AM
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Joined: Jan 2003
Posts: 4,448 Phoenix, AZ
MoparBilly
master
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master
Joined: Jan 2003
Posts: 4,448
Phoenix, AZ
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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?
"Livin' in a powder keg and givin' off sparks"
4 Street cars, 5 Race engines
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Re: 904 vs glide
[Re: MoparBilly]
#2382967
10/06/17 02:22 PM
10/06/17 02:22 PM
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Joined: May 2012
Posts: 72 sioux falls, sd
10sec.dart
OP
member
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OP
member
Joined: May 2012
Posts: 72
sioux falls, sd
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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
Last edited by 10sec.dart; 10/06/17 02:24 PM.
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Re: 904 vs glide
[Re: J_BODY]
#2383280
10/07/17 02:40 AM
10/07/17 02:40 AM
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Joined: Oct 2011
Posts: 3,036 bean town ....Ca
WHITEDART
master
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master
Joined: Oct 2011
Posts: 3,036
bean town ....Ca
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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
In the 8s N/A.with Brett miller W8's 5.07 at 133 at 2700lb
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Re: 904 vs glide
[Re: WHITEDART]
#2383365
10/07/17 12:37 PM
10/07/17 12:37 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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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
Last edited by MR_P_BODY; 10/07/17 12:38 PM.
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Re: 904 vs glide
[Re: justinp61]
#2383413
10/07/17 01:50 PM
10/07/17 01:50 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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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
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Re: 904 vs glide
[Re: J_BODY]
#2383431
10/07/17 02:28 PM
10/07/17 02:28 PM
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Joined: Dec 2005
Posts: 11,408 Fulton County, PA
CMcAllister
Mr. Helpful
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Mr. Helpful
Joined: Dec 2005
Posts: 11,408
Fulton County, PA
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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.
If the results don't match the theory, change the theory.
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Re: 904 vs glide
[Re: CMcAllister]
#2383586
10/07/17 09:43 PM
10/07/17 09:43 PM
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Joined: May 2003
Posts: 13,182 aZLiViN
J_BODY
I Live Here
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I Live Here
Joined: May 2003
Posts: 13,182
aZLiViN
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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
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Re: 904 vs glide
[Re: J_BODY]
#2383616
10/07/17 10:41 PM
10/07/17 10:41 PM
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Joined: Oct 2011
Posts: 3,036 bean town ....Ca
WHITEDART
master
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master
Joined: Oct 2011
Posts: 3,036
bean town ....Ca
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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's 5.07 at 133 at 2700lb
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