Roadrunner brand converters?

DPower58 · January 5th, 2012, 06:41 PM

So I'm getting my 4R70W tranny overhauled out of my 03 GT with some stronger clutches and bands. While I'm at it, I'm going to install a higher stall converter. There not cheap. The least expensive one on summit racing is a Hughes 2000 rpm stall for like $350. I did, however, find a 2400-2800 stall converter from a place out of Arizona called Roadrunner Converters on sale for $199. Originally $296? Seems to good to be true.

Has anyone ever dealt or even heard of this company? Or used a roadrunner converter? If so, please let me know what you think. They say they have been around for 30 years, but this is the first I've heard of them. They seem legit, but I have yet to hear or read any reviews.

casper gt · January 5th, 2012, 06:58 PM

might wanna do some more research since the factory converter is a 2000 stall, generally you'll be in the 3500+ range

call Frank @ rev max, he'll fix you up, myself & a few others on here run his stuff with quite good results.

Performance Torque Converters | RevMax

tell him I sent you & he'll look out for you

DPower58 · January 5th, 2012, 07:09 PM

It's just a street Honda and Chevy eater... Probably only see the track a handful of times, but basically an everyday driver. I don't think I have enough ponies for anything over 3000 stall

RevmaxConverters · January 5th, 2012, 09:50 PM

You will want at least a 3200 stall. As for the converter you asked about, you would be better running a rebuilt stock unit. That unit is a 12" converter with the fins bent over a bit more and a machined stator on the turbine side. It is horribly inefficient and will create more heat then a 4500 stall 9.5" unit. Also, you will be lucky to see 2400 max from it....

Even a bone stock mustang can gain up to .5 in the quarter mile compared to a stock unit. A 3200 or higher stall will make your car feel as if you added 50hp. Besides forced induction or spray it is by far the best mod you can do!!

DPower58 · January 5th, 2012, 11:01 PM

Yeah I got a 100 shot system with long tubes and stage one tfs cam, 24lbs injectors and a whole lot of bolt ons. But my converter is 10.5" and there ain't a whole lot of room between the bell housing and the tc now as it is. I just want to know if this company is legit or not

RevmaxConverters · January 6th, 2012, 09:16 AM

Never heard of them, but again, this is not the converter you would want. The stock TC is better.... You are going to want something 3200+, trust me!!! We would be happy to explain....

DPower58 · January 6th, 2012, 01:32 PM

Not with 3.23:1 gears... At 70mph I'm cruisin at 2100 RPM. 350hp at 19 mpg. That's where I'm staying. I talked to roadrunner converters today and he garenteed me that they are not rebuilt converters, they are built at their shop from scratch. 1 year warranty. Had a chat with some chevy guys that bought from roadrunner and they are very satisfied.

RevmaxConverters · January 6th, 2012, 01:41 PM

FYI, no matter what stall speed you go with, you will still cruise at 2100RPM at 70mph... That is the beauty of the lockup clutch, 1:1 efficiency at cruise... So even if you did something crazy like 4500 stall you would still cruise at 2100 at 70mph.

On a side note, your converter is not a 10.5" diameter unit, no Mustang ever built had that small of a converter, 10.5" is your bolt pattern. Just make sure that it is NOT a factory diameter 12" converter or you will be sorry........ It should be a 245mm 9.5" unit.

DPower58 · January 6th, 2012, 01:44 PM

Originally Posted by RevmaxConverters

Never heard of them, but again, this is not the converter you would want. The stock TC is better.... You are going to want something 3200+, trust me!!! We would be happy to explain....

How can you justify that the stock converter would be better than a brand new roadrunner 2400-2800 stall when you have never heard of them? I'm no idiot when it comes to converters, I want a 2500 stall even if the stock stall is 2000. There's a lot of factors when it comes to choosing a high stall converter. Gear ratio, horse power, torque, induction, power range, tranny setup.... So how can I trust you when you have no idea how my car is set up and how I want it to run? Not trying to be a dick, I'm just saying... Please explain, but keep in mind, this is not a strip car. This is an everyday, faster than stock street car with 3.23 rear end.

RevmaxConverters · January 6th, 2012, 02:02 PM

First off, I am not saying anything bad about Roadrunner Converters, they may very well be a good company, just do not know them, that is all.... I am merely stating that a 12" factory converter that is restalled is worse than the converter you have now.

Here is why it is not the unit you will want. A 2400-2800 stall converter is a REBUILT factory diameter converter that has the fins bent to the high stall side (positive), then to give it a little extra stall you can machine the stator and get a couple hundred more out of it. Now, you can make a 12" converter stall about 400-600 RPM's higher than it would stock, so if you are at say 1800, this new one will get you 2200-2400. It is a matter of physics, the smaller the diameter the higher the stall, and at a certain point you will begin to RAPIDLY lose efficiency. This point is when you bend the impeller blade angle past 20 degrees "positive". 20 degrees is roughly 200RPM higher. You will further lower your efficiency when cutting the stator. When you go smaller in diameter you can keep the impeller blades in a more "negative pitch" and increase stall. Rule of thumb is, every 1" in diameter drop while keeping the impeller pitch the same will equal about 1000rpm higher stall with the same efficiency. Now, by dropping 2.5" down to a 9.5" converter you can now really keep the impellers blades at a "very negative" pitch and now INCREASE the torque multiplication and efficiency.

Now, having driven HUNDREDS of vehicles with both smaller diameter units and factory converters, I would never want to be in one with a factory diameter unit that has been restalled to a higher stall speed. Regardless of what the salesperson tells you, the off the line performance will be mushy, and you will see ZERO gains in the 1/4 mile as the efficiency is poor!

I am just trying to be helpful, and would not want one of my customers or friends for that matter buy a restalled factory diameter converter. Sorry if this came across any other way!

DPower58 · January 6th, 2012, 02:18 PM

No it's all good... This is why I hate typing, text has no tone LOL... roadrunner has 11" stall with 10.5" bolt pattern with furnace-blazed fins on the 2400-2800 tc for a 4R70W on sale for $199 originally $296 with one year warranty... Good deal or not? That's all I want to know regardless of what speed stall I should get. And yes I do appreciate the help and knowledge you have shared with me.

DPower58 · January 6th, 2012, 02:20 PM

Sweet video, by the way

RevmaxConverters · January 6th, 2012, 02:28 PM

Sounds ok to me, and no offense taken on any posts, lol!!

I could be wrong but I think your factory unit may be the same 11" that you might be trying to acquire. You might want to ask Casper GT he may know for sure... Some GT's were built with a 11.75" and others with a 12.75" diameter converter.. So if you have the 11.75" you are basically getting the same thing you are taking out, make sense??

Thanks for the compliments

casper gt · January 6th, 2012, 05:36 PM

for what your looking for, just get a stock mach 1 unit & you'll be good IMO (they have a few hundred more rpms built into them from the factory).

pm mustang50lx on there he has the one he took out of his mach 1 to put the new revmax one in.

one other thing to add, when a person tells you that a 200 dollar low stall converter is 100% scratch built, run the other way, as a general rule, ALL performance converters have some used parts in them, especially one that size & stall.

that all said, good luck with whatever route you choose to go.

DPower58 · January 6th, 2012, 10:05 PM

Yeah that sounds good... Thanks for everything guys

casper gt · January 7th, 2012, 03:14 AM

Originally Posted by DPower58

Yeah that sounds good... Thanks for everything guys

no problem, if you have any intrest in the mach 1 converter let me or Glenn (mustang50lx on here) know.

I talked with him about it tonight & he's up for giving you a very good deal on it.

Dirtyd0g · January 11th, 2012, 11:40 PM

Originally Posted by RevmaxConverters

Sounds ok to me, and no offense taken on any posts, lol!!

I could be wrong but I think your factory unit may be the same 11" that you might be trying to acquire. You might want to ask Casper GT he may know for sure... Some GT's were built with a 11.75" and others with a 12.75" diameter converter.. So if you have the 11.75" you are basically getting the same thing you are taking out, make sense??

Thanks for the compliments

All 4.6 liter 4r70w/4r75 equipped mustangs came with an 11.25 inch converter, 5.0 and 3.8 liter came with a 12 inch converter. Those are the measurements as measured across the turbine.
Alan

January 5th, 2012, 06:41 PM	#1
DPower58 Regular 2003 mustang GT Join Date: Mar 2010 Location: Huntertown, IN Posts: 80 iTrader: 0 reviews	Roadrunner brand converters? So I'm getting my 4R70W tranny overhauled out of my 03 GT with some stronger clutches and bands. While I'm at it, I'm going to install a higher stall converter. There not cheap. The least expensive one on summit racing is a Hughes 2000 rpm stall for like $350. I did, however, find a 2400-2800 stall converter from a place out of Arizona called Roadrunner Converters on sale for $199. Originally $296? Seems to good to be true. Has anyone ever dealt or even heard of this company? Or used a roadrunner converter? If so, please let me know what you think. They say they have been around for 30 years, but this is the first I've heard of them. They seem legit, but I have yet to hear or read any reviews. __________________

January 5th, 2012, 06:58 PM	#2
casper gt Moderator 2012 300a gt auto 12.10@116 Join Date: Mar 2008 Location: creighton pa Posts: 7,706 iTrader: 4 reviews	might wanna do some more research since the factory converter is a 2000 stall, generally you'll be in the 3500+ range call Frank @ rev max, he'll fix you up, myself & a few others on here run his stuff with quite good results. Performance Torque Converters \| RevMax tell him I sent you & he'll look out for you __________________ MM BRACKET RACING CREW CO-FOUNDER BAMA Performance Drag Team Founder 2012 300a GT auto

January 5th, 2012, 07:09 PM	#3
DPower58 Regular 2003 mustang GT Join Date: Mar 2010 Location: Huntertown, IN Posts: 80 iTrader: 0 reviews	It's just a street Honda and Chevy eater... Probably only see the track a handful of times, but basically an everyday driver. I don't think I have enough ponies for anything over 3000 stall __________________

January 5th, 2012, 11:01 PM	#5
DPower58 Regular 2003 mustang GT Join Date: Mar 2010 Location: Huntertown, IN Posts: 80 iTrader: 0 reviews	Yeah I got a 100 shot system with long tubes and stage one tfs cam, 24lbs injectors and a whole lot of bolt ons. But my converter is 10.5" and there ain't a whole lot of room between the bell housing and the tc now as it is. I just want to know if this company is legit or not __________________

January 6th, 2012, 09:16 AM	#6
RevmaxConverters Newbie Join Date: Oct 2011 Posts: 18 iTrader: 0 reviews	Never heard of them, but again, this is not the converter you would want. The stock TC is better.... You are going to want something 3200+, trust me!!! We would be happy to explain.... __________________ S/N 95 Mustang 362CI 91MM Turbo 10.5" Drag Radials, Powerglide Revmax 4200 stall custom 9.5" billet converter http://www.youtube.com/watch?v=HfacFiI0yrY

January 5th, 2012, 09:50 PM	#4
RevmaxConverters Newbie Join Date: Oct 2011 Posts: 18 iTrader: 0 reviews	You will want at least a 3200 stall. As for the converter you asked about, you would be better running a rebuilt stock unit. That unit is a 12" converter with the fins bent over a bit more and a machined stator on the turbine side. It is horribly inefficient and will create more heat then a 4500 stall 9.5" unit. Also, you will be lucky to see 2400 max from it.... Even a bone stock mustang can gain up to .5 in the quarter mile compared to a stock unit. A 3200 or higher stall will make your car feel as if you added 50hp. Besides forced induction or spray it is by far the best mod you can do!!

January 6th, 2012, 01:32 PM	#7
DPower58 Regular 2003 mustang GT Join Date: Mar 2010 Location: Huntertown, IN Posts: 80 iTrader: 0 reviews	Not with 3.23:1 gears... At 70mph I'm cruisin at 2100 RPM. 350hp at 19 mpg. That's where I'm staying. I talked to roadrunner converters today and he garenteed me that they are not rebuilt converters, they are built at their shop from scratch. 1 year warranty. Had a chat with some chevy guys that bought from roadrunner and they are very satisfied. __________________

January 6th, 2012, 01:41 PM	#8
RevmaxConverters Newbie Join Date: Oct 2011 Posts: 18 iTrader: 0 reviews	FYI, no matter what stall speed you go with, you will still cruise at 2100RPM at 70mph... That is the beauty of the lockup clutch, 1:1 efficiency at cruise... So even if you did something crazy like 4500 stall you would still cruise at 2100 at 70mph. On a side note, your converter is not a 10.5" diameter unit, no Mustang ever built had that small of a converter, 10.5" is your bolt pattern. Just make sure that it is NOT a factory diameter 12" converter or you will be sorry........ It should be a 245mm 9.5" unit. __________________ S/N 95 Mustang 362CI 91MM Turbo 10.5" Drag Radials, Powerglide Revmax 4200 stall custom 9.5" billet converter http://www.youtube.com/watch?v=HfacFiI0yrY

January 6th, 2012, 02:02 PM	#10
RevmaxConverters Newbie Join Date: Oct 2011 Posts: 18 iTrader: 0 reviews	First off, I am not saying anything bad about Roadrunner Converters, they may very well be a good company, just do not know them, that is all.... I am merely stating that a 12" factory converter that is restalled is worse than the converter you have now. Here is why it is not the unit you will want. A 2400-2800 stall converter is a REBUILT factory diameter converter that has the fins bent to the high stall side (positive), then to give it a little extra stall you can machine the stator and get a couple hundred more out of it. Now, you can make a 12" converter stall about 400-600 RPM's higher than it would stock, so if you are at say 1800, this new one will get you 2200-2400. It is a matter of physics, the smaller the diameter the higher the stall, and at a certain point you will begin to RAPIDLY lose efficiency. This point is when you bend the impeller blade angle past 20 degrees "positive". 20 degrees is roughly 200RPM higher. You will further lower your efficiency when cutting the stator. When you go smaller in diameter you can keep the impeller blades in a more "negative pitch" and increase stall. Rule of thumb is, every 1" in diameter drop while keeping the impeller pitch the same will equal about 1000rpm higher stall with the same efficiency. Now, by dropping 2.5" down to a 9.5" converter you can now really keep the impellers blades at a "very negative" pitch and now INCREASE the torque multiplication and efficiency. Now, having driven HUNDREDS of vehicles with both smaller diameter units and factory converters, I would never want to be in one with a factory diameter unit that has been restalled to a higher stall speed. Regardless of what the salesperson tells you, the off the line performance will be mushy, and you will see ZERO gains in the 1/4 mile as the efficiency is poor! I am just trying to be helpful, and would not want one of my customers or friends for that matter buy a restalled factory diameter converter. Sorry if this came across any other way! __________________ S/N 95 Mustang 362CI 91MM Turbo 10.5" Drag Radials, Powerglide Revmax 4200 stall custom 9.5" billet converter http://www.youtube.com/watch?v=HfacFiI0yrY

January 6th, 2012, 02:18 PM	#11
DPower58 Regular 2003 mustang GT Join Date: Mar 2010 Location: Huntertown, IN Posts: 80 iTrader: 0 reviews	No it's all good... This is why I hate typing, text has no tone LOL... roadrunner has 11" stall with 10.5" bolt pattern with furnace-blazed fins on the 2400-2800 tc for a 4R70W on sale for $199 originally $296 with one year warranty... Good deal or not? That's all I want to know regardless of what speed stall I should get. And yes I do appreciate the help and knowledge you have shared with me. __________________

January 6th, 2012, 02:20 PM	#12
DPower58 Regular 2003 mustang GT Join Date: Mar 2010 Location: Huntertown, IN Posts: 80 iTrader: 0 reviews	Sweet video, by the way __________________

January 6th, 2012, 02:28 PM	#13
RevmaxConverters Newbie Join Date: Oct 2011 Posts: 18 iTrader: 0 reviews	Sounds ok to me, and no offense taken on any posts, lol!! I could be wrong but I think your factory unit may be the same 11" that you might be trying to acquire. You might want to ask Casper GT he may know for sure... Some GT's were built with a 11.75" and others with a 12.75" diameter converter.. So if you have the 11.75" you are basically getting the same thing you are taking out, make sense?? Thanks for the compliments __________________ S/N 95 Mustang 362CI 91MM Turbo 10.5" Drag Radials, Powerglide Revmax 4200 stall custom 9.5" billet converter http://www.youtube.com/watch?v=HfacFiI0yrY

January 6th, 2012, 05:36 PM	#14
casper gt Moderator 2012 300a gt auto 12.10@116 Join Date: Mar 2008 Location: creighton pa Posts: 7,706 iTrader: 4 reviews	for what your looking for, just get a stock mach 1 unit & you'll be good IMO (they have a few hundred more rpms built into them from the factory). pm mustang50lx on there he has the one he took out of his mach 1 to put the new revmax one in. one other thing to add, when a person tells you that a 200 dollar low stall converter is 100% scratch built, run the other way, as a general rule, ALL performance converters have some used parts in them, especially one that size & stall. that all said, good luck with whatever route you choose to go. __________________ MM BRACKET RACING CREW CO-FOUNDER BAMA Performance Drag Team Founder 2012 300a GT auto

January 6th, 2012, 10:05 PM	#15
DPower58 Regular 2003 mustang GT Join Date: Mar 2010 Location: Huntertown, IN Posts: 80 iTrader: 0 reviews	Yeah that sounds good... Thanks for everything guys __________________

Remove Advertisements Sponsored Links
Ford Mustang Forum Advertisement

LinkBacks (?) LinkBack to this Thread: http://www.moddedmustangs.com/forums/vendors/244802-roadrunner-brand-converters.html
Posted By	For	Type	Date
Thread Roadrunner brand converters? \| Forums at Modded Mustangs \| BoardReader	This thread	Refback	February 29th, 2012 10:07 PM

Threads Similar to: Roadrunner brand converters?
Thread	Thread Starter	Forum	Replies	Last Post
RoadRunner... Faster than a Coyote...	NitrousExpress	Modular Mustangs	9	January 13th, 2011 03:48 PM
Cat Converters	Dawgs2099	Modular Mustangs	4	December 6th, 2007 08:45 AM
Cat converters	Tony_90fox	5.0 Mustangs	5	February 22nd, 2007 01:56 PM

All times are GMT -4. The time now is 06:32 AM.
Contact Us - Modded Mustangs : Ford Mustang Forums - Privacy Statement - Top
Modded Mustangs is ©2005-2008, All Rights Reserved, And is Not Affiliated with Ford Motor Company. Forum is powered by vBulletin ©2000 - 2012, Jelsoft Ent. Ltd. & SEO by vBSEO 3.3.2 ©2009, Crawlability, Inc.