|
Re: What's too heavy for a Powerglide?
[Re: BigFish69]
#2893210
02/25/21 09:55 PM
02/25/21 09:55 PM
|
Joined: Mar 2003
Posts: 2,491
PA
moparacer
top fuel
|
top fuel
Joined: Mar 2003
Posts: 2,491
PA
|
3500 lbs. is a little heavy....Used to be a 3000 lb rule with a glide weather you would pick up or not. I have run glides in several cars 3000 lbs and they wewre not slower with a glide. You have to gear and converter them right.
67 Barracuda street/bracket car 11.27-119
68 Dart 502 BB 8.70s-152
414 cid SB Dragster 7.65-174
|
|
|
Re: What's too heavy for a Powerglide?
[Re: Dragula]
#2893244
02/25/21 11:46 PM
02/25/21 11:46 PM
|
Joined: Mar 2008
Posts: 292
NY
challenger451ci
OP
enthusiast
|
OP
enthusiast
Joined: Mar 2008
Posts: 292
NY
|
We have a Mopar guy I race with, in a heavy B-body with a 400 stroker. His exact words to me were, the glide will be slow at the hit, but faster to the 330ft mark....He highly recommends them. I figure it'll be softer at the hit than what I have now. I do mostly no prep and airport stuff, so the early rounds can be virgin asphalt. My SLR is around 8.5 now and I'm thinking if I can get it in the 7-7.5 range, it'll make power management a little easier as long as I don't get too much wheel speed early.
|
|
|
Re: What's too heavy for a Powerglide?
[Re: BigFish69]
#2893248
02/25/21 11:49 PM
02/25/21 11:49 PM
|
Joined: Mar 2008
Posts: 292
NY
challenger451ci
OP
enthusiast
|
OP
enthusiast
Joined: Mar 2008
Posts: 292
NY
|
are you looking for speed or consistence
if you want to go fast keep your 727
if you want to win races go glide I need to be consistently fast.  This is not a bracket car, so I need to get A to B before the guy in the other lane.
|
|
|
Re: What's too heavy for a Powerglide?
[Re: moparacer]
#2893252
02/25/21 11:56 PM
02/25/21 11:56 PM
|
Joined: Mar 2008
Posts: 292
NY
challenger451ci
OP
enthusiast
|
OP
enthusiast
Joined: Mar 2008
Posts: 292
NY
|
3500 lbs. is a little heavy....Used to be a 3000 lb rule with a glide weather you would pick up or not. I have run glides in several cars 3000 lbs and they wewre not slower with a glide. You have to gear and converter them right. 3000lbs was always the cutoff that I always heard too, but I know converters have come a long way. I also think I'll be able to add power if need be to keep this land barge moving, just not sure how happy it'll be on the shift recovery. Ideally, I'd like to do a 3 speed TH400 with a 1.8 low gear set, but that gets a little pricey!
|
|
|
Re: What's too heavy for a Powerglide?
[Re: challenger451ci]
#2893290
02/26/21 09:26 AM
02/26/21 09:26 AM
|
Joined: Jan 2003
Posts: 13,351
Marion, South Carolina [><]
an8sec70cuda
I Live Here
|
I Live Here
Joined: Jan 2003
Posts: 13,351
Marion, South Carolina [><]
|
You're not too heavy for a nitrous car making the kind of power you are. For a slower N/A car, yeah it'll be a turd out the gate.
I suspect you're in the same boat (pun intended) I am. My car is a sled (nearly 3900 lbs w/ driver), but makes good power...and w/ a 727 on small tires (radials) it can be a challenge getting it to 60'.
I have friends w/ 3400+ lb nitrous cars w/ glides and they run REALLY good. EVERY one of them has been on me for years to put a glide in mine, but only the $$$$ keeps me from doing it.
CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax
|
|
|
Re: What's too heavy for a Powerglide?
[Re: challenger451ci]
#2893306
02/26/21 10:05 AM
02/26/21 10:05 AM
|
Joined: Aug 2003
Posts: 4,670
On the parachute mount
n20mstr
master
|
master
Joined: Aug 2003
Posts: 4,670
On the parachute mount
|
After reading the Powerglide converter thread, I figured I would throw this out there since a lot of you are running Glides. Anyone running a Powerglide in a car that's around 3500lbs on small tires? If so, what's the combination? Mine is a 528ci on nitrous. I'm concerned it will fall on it's face in high gear being so heavy. My thought is to go with around a 1.68 low gear and 4.30 out back. I know converter is going to be a big factor in getting the car to work, especially on the surfaces I run on. I have been 1.16 , leaving in 2nd 1.48 with 4.10 rear. BUT thats on a prepped track and at 3030lbs Brad Watt has been leaving in 2nd with a 727 and it has been working well. Again this is on a prepped track, you have a 727 now? Im pretty sure Cope makes the vavle body that you can leave in 2nd. Just remember that leaving in 2nd will require a different converter/ stator, but you dealing with Ultimate now so they should be able to set you up. If your concerned about the RPM drop into high, consider a dump valve. You could make a 3 speed work, but i think your better off with a 2 speed. Glide will be the lightest option, T400 the strongest. Honestly if it were me, i would try leaving in 2nd with the 727 first since you already have it. Dont be afraid to knock down the SLR. I know i might get flamed for this, but there are not a lot of guys on here that have experience with what your doing.
Last edited by n20mstr; 02/26/21 10:06 AM.
....BAD A$$ STREET CAR.....
|
|
|
Re: What's too heavy for a Powerglide?
[Re: challenger451ci]
#2893307
02/26/21 10:08 AM
02/26/21 10:08 AM
|
Joined: Dec 2005
Posts: 11,494
Fulton County, PA
CMcAllister
Mr. Helpful
|
Mr. Helpful
Joined: Dec 2005
Posts: 11,494
Fulton County, PA
|
3500 lbs. is a little heavy....Used to be a 3000 lb rule with a glide weather you would pick up or not. I have run glides in several cars 3000 lbs and they wewre not slower with a glide. You have to gear and converter them right. 3000lbs was always the cutoff that I always heard too, but I know converters have come a long way. I also think I'll be able to add power if need be to keep this land barge moving, just not sure how happy it'll be on the shift recovery. Ideally, I'd like to do a 3 speed TH400 with a 1.8 low gear set, but that gets a little pricey! A 3 speed with a 1.8 will have the same SLR as a 2 speed with a 1.8. A 2 speed with a 1.5 or 1.6 will be even softer at the hit, and be lighter and use much less power to run, regardless the gear ratio. Unless you need the 2.50 low gear, or the thing is so peaky it needs to keep the RPMs up, Glide.
If the results don't match the theory, change the theory.
|
|
|
Re: What's too heavy for a Powerglide?
[Re: challenger451ci]
#2893322
02/26/21 10:47 AM
02/26/21 10:47 AM
|
Joined: Aug 2003
Posts: 4,670
On the parachute mount
n20mstr
master
|
master
Joined: Aug 2003
Posts: 4,670
On the parachute mount
|
After reading the Powerglide converter thread, I figured I would throw this out there since a lot of you are running Glides. Anyone running a Powerglide in a car that's around 3500lbs on small tires? If so, what's the combination? Mine is a 528ci on nitrous. I'm concerned it will fall on it's face in high gear being so heavy. My thought is to go with around a 1.68 low gear and 4.30 out back. I know converter is going to be a big factor in getting the car to work, especially on the surfaces I run on. Time for a bigger kit.....or a 2nd one !!!
....BAD A$$ STREET CAR.....
|
|
|
Re: What's too heavy for a Powerglide?
[Re: n20mstr]
#2893328
02/26/21 11:00 AM
02/26/21 11:00 AM
|
Joined: Jan 2003
Posts: 9,982
Frostbitefalls MN (Rocky&Bullw...
gregsdart
master
|
master
Joined: Jan 2003
Posts: 9,982
Frostbitefalls MN (Rocky&Bullw...
|
Just speculating hear. With optional 1st and second straightcut gears available for the TF, could it be made to do the job and be as efficient and cheaper than converting to a glide?
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
|
|
|
Re: What's too heavy for a Powerglide?
[Re: gregsdart]
#2893332
02/26/21 11:14 AM
02/26/21 11:14 AM
|
Joined: Jan 2003
Posts: 13,351
Marion, South Carolina [><]
an8sec70cuda
I Live Here
|
I Live Here
Joined: Jan 2003
Posts: 13,351
Marion, South Carolina [><]
|
Just speculating hear. With optional 1st and second straightcut gears available for the TF, could it be made to do the job and be as efficient and cheaper than converting to a glide? I don't think there is a low enough (numerically) 1st gear available for a 727 to work very well in an application like this. I'll try the 2nd gear leave VB from Cope in my 727 before I switch transmissions, but I'm leary of it b/c of my car's weight. I think I'd have to put a lot more rear gear in it to keep it from being such a dud and lugging the motor down bad.
CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax
|
|
|
Re: What's too heavy for a Powerglide?
[Re: an8sec70cuda]
#2893353
02/26/21 12:38 PM
02/26/21 12:38 PM
|
Joined: Aug 2003
Posts: 4,670
On the parachute mount
n20mstr
master
|
master
Joined: Aug 2003
Posts: 4,670
On the parachute mount
|
i think the best way to approach this is , determine a target SLR. Then do whatever combination of 1st or 2nd gear to get that with a 4.10,430 or 4.56 gear. The converter guys like 4.56 or higher (numerically) because it puts less slip in the converter from a leverage standpoint. This is a nitrous car so usually its all in by 1.0. Also this car runs on the worst surfaces so it needs or will only tolerate 6 or less on the SLR ??
Usually it comes down to a lot of trial and error, pretty hard for the little budget guys to change trans ratios. Usually depending on power level (stroke) the SLR falls between 7 to 5
....BAD A$$ STREET CAR.....
|
|
|
Re: What's too heavy for a Powerglide?
[Re: challenger451ci]
#2893366
02/26/21 01:01 PM
02/26/21 01:01 PM
|
Joined: Mar 2003
Posts: 6,334
Heaven
EvilB1Dart
master
|
master
Joined: Mar 2003
Posts: 6,334
Heaven
|
After reading the Powerglide converter thread, I figured I would throw this out there since a lot of you are running Glides. Anyone running a Powerglide in a car that's around 3500lbs on small tires? If so, what's the combination? Mine is a 528ci on nitrous. I'm concerned it will fall on it's face in high gear being so heavy. My thought is to go with around a 1.68 low gear and 4.30 out back. I know converter is going to be a big factor in getting the car to work, especially on the surfaces I run on. Need some more details (unless you're a grudge runner) Is this a brand new build/setup? If not new, what has been its best perf on a motor pass, and on a nitrous pass? Do you know exactly how much HP & TQ your 528 is making on motor alone? Is the 528 specifically built for nitrous, or mainly N/A with some nitrous setup and just tickling it with a "middle of the road" nitrous hit? Plate or Fogger, and how much you smashing it with? Progressive controller? Which small tire (slick or drag radial specifics) and suspension/shocks setup? Are you talking 3500 in the seat at the tree/hand-drop, or 3500+whatever your driver weight is at the tree/hand-drop? Let us know....... However, with just ball-parking it I'd go with Tony's above advice.
Last edited by EvilB1Dart; 02/26/21 01:11 PM.
"Any fool can know. The point is to understand"
- A. Einstein
|
|
|
Re: What's too heavy for a Powerglide?
[Re: challenger451ci]
#2893390
02/26/21 02:10 PM
02/26/21 02:10 PM
|
Joined: Jan 2012
Posts: 2,629
Stuttgart, Arkansas
rickseeman
master
|
master
Joined: Jan 2012
Posts: 2,629
Stuttgart, Arkansas
|
After reading the Powerglide converter thread, I figured I would throw this out there since a lot of you are running Glides. Anyone running a Powerglide in a car that's around 3500lbs on small tires? If so, what's the combination? Mine is a 528ci on nitrous. I'm concerned it will fall on it's face in high gear being so heavy. My thought is to go with around a 1.68 low gear and 4.30 out back. I know converter is going to be a big factor in getting the car to work, especially on the surfaces I run on. There are 100's of 3,500 lb cars running Powerglides. Everything will be fine. My car is 512ci with Powerglide. 3,200 lbs plus me and with a 9" tire it pulled the front wheels on it's first night out. I was impressed for a car straight off the showroom floor. Everyone ran 1.80 low for decades, I think that was because it was the strongest back then, but now they make strong gearsets with different ratios. (That doesn't mean I would want one.) I'm a Mopar guy. I prefer a 727. But because of the many reasons that you have already heard about, the Powerglide is much easier.
2011 Drag Pak Challenger
|
|
|
Re: What's too heavy for a Powerglide?
[Re: challenger451ci]
#2893396
02/26/21 02:27 PM
02/26/21 02:27 PM
|
Joined: Aug 2003
Posts: 4,670
On the parachute mount
n20mstr
master
|
master
Joined: Aug 2003
Posts: 4,670
On the parachute mount
|
Thanks for all the replies! I have a second gear leave CRT valve body that I had some issues with the 2-3 shift. It would drive right through the converter on the sauce on the shift(dropped ~500-600rpm). I put an A&A in and the shift drop is now ~800-900rpm on the sauce. Its been back to CRT for a change, but I haven't put it back in. Maybe I'll try leaving in 2nd and see if it likes it before going through the work of changing to a glide or TH400. I think the car needs about a 4.30 to make the 1/8th depending on converter slip. If Brad Watt can leave on a prepped track and not kill the 727, I think I'll be OK! I know that car makes a ton more power than my hoagie. Part of the reason for making the change is for durability.
I know when I made the change to the taller 2.28 low gear and 3.73's(8.5SLR), it made things much easier for power management. I need to be able to leave on a dirt road and generally can now, but I have to take a TON of power out to get it to leave.
You are right, Tony....I need a bigger jet! It has a 0.030n jet in it now, and I should be able to step it up a bit more to make it pull out the back half.
Just a .030??? OMG step it up to like a .052, then we are talking !!!
....BAD A$$ STREET CAR.....
|
|
|
Re: What's too heavy for a Powerglide?
[Re: EvilB1Dart]
#2893427
02/26/21 03:45 PM
02/26/21 03:45 PM
|
Joined: Mar 2008
Posts: 292
NY
challenger451ci
OP
enthusiast
|
OP
enthusiast
Joined: Mar 2008
Posts: 292
NY
|
After reading the Powerglide converter thread, I figured I would throw this out there since a lot of you are running Glides. Anyone running a Powerglide in a car that's around 3500lbs on small tires? If so, what's the combination? Mine is a 528ci on nitrous. I'm concerned it will fall on it's face in high gear being so heavy. My thought is to go with around a 1.68 low gear and 4.30 out back. I know converter is going to be a big factor in getting the car to work, especially on the surfaces I run on. Need some more details (unless you're a grudge runner) Is this a brand new build/setup? If not new, what has been its best perf on a motor pass, and on a nitrous pass? Do you know exactly how much HP & TQ your 528 is making on motor alone? Is the 528 specifically built for nitrous, or mainly N/A with some nitrous setup and just tickling it with a "middle of the road" nitrous hit? Plate or Fogger, and how much you smashing it with? Progressive controller? Which small tire (slick or drag radial specifics) and suspension/shocks setup? Are you talking 3500 in the seat at the tree/hand-drop, or 3500+whatever your driver weight is at the tree/hand-drop? Let us know....... However, with just ball-parking it I'd go with Tony's above advice. I figure it might make 700hp NA?? It's been 9.92 at 136 on the motor with 3.73, 29" tire and about as tight of a 9in converter as Lenny could make. It waddles like a duck on the motor. It's pretty much a nitrous build. Most events we do, it's an honest 3550 with my fat *ss in the seat ready to roll. I know it needs more gear, especially only running 1/8mi now, but I don't want to add rear gear without doing something for low gear to get the SLR down. I run either a 28 x 10.5 or 29 x 10.0 slick. Cal-tracs with Viking DA shocks. Nothing exotic.
|
|
|
|
|
