How high can I safely rev the automatic motor? - 2003-04 Mach 1 Registry Owners Club

WhiteautoMach · 08-15-2010, 11:40 AM

Redline is 5800, rev limiter is 6250. Can I set my programmer to have it shift at 6200 safely? It seems to pull a lot harder the higher I rev it.

peabodyz06 · 08-15-2010, 03:32 PM

Automatic motor??

Unrealford · 08-15-2010, 03:47 PM

You can safely rev them as high as the Converter and auto tranny can hold,
It's the trans in the auto cars that limits rpm, not the crank. The torque converters "balloon" over 6000 rpm. Ford, in it's infinite wisdom, put a cast crank in auto cars to save a few $'s. They figured they can't spin that fast anyway why put a forged crank in..
There is also a nifty little c-clip that displaces itself around 6000 rpm on the stock transmission.

Darrin

WhiteautoMach · 08-15-2010, 08:33 PM

Thanks! So I guess leave it at 5800 or 5900?

Quote:

Originally Posted by Unrealford

You can safely rev them as high as the Converter and auto tranny can hold,
It's the trans in the auto cars that limits rpm, not the crank. The torque converters "balloon" over 6000 rpm. Ford, in it's infinite wisdom, put a cast crank in auto cars to save a few $'s. They figured they can't spin that fast anyway why put a forged crank in..
There is also a nifty little c-clip that displaces itself around 6000 rpm on the stock transmission.

Darrin

jaimoe · 08-15-2010, 09:13 PM

Yes. However One of the best mods you can do is to buy an upgraded transmission and converter from Darrin and you will be AMAZED at how much quicker the car will be. The cost isn't that bad either.

Call Darrin. He is a straight up guy. He had TONS of info and is easy to deal with.

3150Mach1 · 08-15-2010, 09:27 PM

NA - I found a shift at apx 6100 rpms is right in the sweet spot. Anything higher nets slower ETs.
Spray - I lower the shift points in 5700.
I have my rev limiter raised to 6700.

Unrealford · 08-15-2010, 09:39 PM

Mines set at 6200 with 6800 limit

Newskool Mach · 08-16-2010, 12:16 AM

Shift mine at 6300 and go through the traps at 7000. Rev limiter is set at 7200. I have an aftermarket converter though. Good luck...

WhiteautoMach · 08-19-2010, 12:59 PM

Are you guys playing with fire since Darren said 6000ish blows out the stock converter and the c clip?

jaimoe · 08-19-2010, 01:23 PM

an OCCASIIONAL excursion above 6000 isn't gonna hurt it, but beating the snot out of it all the time will cause the trans to possibly grenade.

Unrealford · 08-19-2010, 01:29 PM

Quote:

Originally Posted by WhiteautoMach

Are you guys playing with fire since Darren said 6000ish blows out the stock converter and the c clip?

I don't have to worry, I had the clip upgraded to spiral clip, from Darrin ...

jaimoe · 08-19-2010, 04:16 PM

I got one of his trannies and converters. Best mod I ever did.

WhiteautoMach · 08-19-2010, 05:48 PM

Quote:

Originally Posted by jaimoe

I got one of his trannies and converters. Best mod I ever did.

How much $ is that combo from him? Do I send him my stock stuff as a core? This is my daily driver (10,000 miles a year) so what converter is best?

2k4mach · 08-19-2010, 06:17 PM

the motor can be taken to 7200 without much worry, much more than that and the rod bolts on the stock bottom end will become a concern.......

now the auto i wouldnt push much higher than say 62-6300 without it being built, your playing with fire with the stock c-clip setup.

Unrealford · 08-19-2010, 06:44 PM

Quote:

Originally Posted by WhiteautoMach

How much $ is that combo from him? Do I send him my stock stuff as a core? This is my daily driver (10,000 miles a year) so what converter is best?

My car had 10,000 when I bought a Converter from Darrin, When you have the converter installed the front pump slides out and they install spiral clip. My original Ford clip was already popping out when the mechanic installed the spiral. So needless to say.'Its a great idea to install" As a daily driver a converters fine, you will lose alittle gas mileage in town, but on Highway, I still get over 20 easy..

jaimoe · 08-20-2010, 08:05 AM

How much $ is that combo from him? Do I send him my stock stuff as a core? This is my daily driver (10,000 miles a year) so what converter is best?

Call Darrin and ask him. I don't like quoting prices for other people's businesses. But you will be suprised at how little it is. Darrin is very knowledgeable and very very easy to do business with. My car was and still is a DD. I put on 10-12K miles per year. I go to the track 1-2 times a month. You will also be suprised at how streetable one of his converters will be. I wish I had gone a little more stall than the 3500 I got.

HAEG · 04-20-2017, 01:10 PM

Quote:

Originally Posted by Unrealford

I don't have to worry, I had the clip upgraded to spiral clip, from Darrin ...

Who is Darrin, is he still on m1R ??

EDIT: Disregard I found him I think.

Oxford04auto · 04-30-2017, 10:54 AM

This is a good read,so who is darrin

DSG2003Mach1 · 04-30-2017, 11:10 AM

Quote:

Originally Posted by Oxford04auto

This is a good read,so who is darrin

does transmission and converter work, used to post on here a lot

Fauxnali · 05-12-2017, 01:24 PM

What happens when the c-clip displaces itself?
I have heard of this happening, I'm assuming its a centrifugal force thing brought on by high RPM's?
Without any other modifications than the Spiral Clip, what kind of HP can that tranny handle?

08-15-2010, 11:40 AM	#1
WhiteautoMach Registered User Join Date: Oct 2008 Location: Reno, NV Posts: 472	How high can I safely rev the automatic motor? Redline is 5800, rev limiter is 6250. Can I set my programmer to have it shift at 6200 safely? It seems to pull a lot harder the higher I rev it. __________________ '03 Automatic. No silencer, K&N FIPK, 3450# race weight, drag radials, cat back, custom tune, alum. driveshaft, intake spacer, raised scoop, underdrive pulleys, larger subframe connectors, synthetic engine oil, removed front sway bar, battery to trunk, 2.06 60', 12.99 @ 107.4

08-15-2010, 03:32 PM	#2
peabodyz06 Nightmare Join Date: Jan 2009 Location: Somewhere in the middle Posts: 88	Re: How high can I safely rev the automatic motor? Automatic motor?? __________________ Drop in K&N filter, Air Diverter, MGW short throw shifter, Raptor shift light, Dioblo programmer, cat's removed, Mac off road Prochamber, Flowmaster super 44 series mufflers, Hood pins, Cobra Jet emblems. custom Nightmare decal. 283 hp and 306 ft-tq

08-15-2010, 03:47 PM	#3
Unrealford Mustang owner since 1984 Join Date: Sep 2003 Location: Buffalo, NY Posts: 4,515	Re: How high can I safely rev the automatic motor? You can safely rev them as high as the Converter and auto tranny can hold, It's the trans in the auto cars that limits rpm, not the crank. The torque converters "balloon" over 6000 rpm. Ford, in it's infinite wisdom, put a cast crank in auto cars to save a few $'s. They figured they can't spin that fast anyway why put a forged crank in.. There is also a nifty little c-clip that displaces itself around 6000 rpm on the stock transmission. Darrin __________________ 2012 Kona Blue Metallic BOSS MOMS Racing... 11.92@115.43 stock besides drag radials http://www.dragzine.com/news/moms-ra...2013-schedule/

08-15-2010, 09:13 PM	#5
jaimoe Speed addict Join Date: Apr 2007 Location: Miami, FL Posts: 648	Re: How high can I safely rev the automatic motor? Yes. However One of the best mods you can do is to buy an upgraded transmission and converter from Darrin and you will be AMAZED at how much quicker the car will be. The cost isn't that bad either. Call Darrin. He is a straight up guy. He had TONS of info and is easy to deal with. __________________ Best time 1/8th mi--7.65@90MPH 2003 DSG Mach 1 99/01 Cobra front bumper Darrin-Matic w/3500 stall converter 100 Shot 4.10 Gears Stock Springs KYB AGX adjustable shocks/struts tubular LCAs UPR dbl adj UCAs Custom SCT Tune 255/40/18 front 295/35/18 rear FR500 Wheels Custom RAI UPR O/R X-Pipe Roy spacer Flowmaster 40's I may not be as good as I once was, but I'm as good once as I ever was." "Just an old man having fun"

08-15-2010, 09:27 PM	#6
3150Mach1 Love my Mach Join Date: Apr 2005 Location: Charlottesville, VA Posts: 13,678	Re: How high can I safely rev the automatic motor? NA - I found a shift at apx 6100 rpms is right in the sweet spot. Anything higher nets slower ETs. Spray - I lower the shift points in 5700. I have my rev limiter raised to 6700. __________________ 2003 slowmatic 11.105@117mph w/125 shot of Nitrous best to date Kooks LTsw/OR X, elect cutouts, JLT RAI w/C&L 85 MAH,1" Spacer,PP Lower intake,Accufab TB,160 T-stat,EF Cooling Mod,NX Kit,Mez Electric Water pump,SLP Linelock,FRPP 4.10s-Alum Dif Cover-Alum Driveshaft & SL, Steeda Bumpsteer,MM Alum rack bushings,Deep Alum Tranny pan,Predator,Steeda AUCAs,MM ALCAs, Dspecs,MM CC plates & FLSFCs,MRT Guage cluster,AEM WB,MRT hood struts,Seq TLs, carbon fiber hood/trunk/Cobra wing,220 amp alt

08-15-2010, 09:39 PM	#7
Unrealford Mustang owner since 1984 Join Date: Sep 2003 Location: Buffalo, NY Posts: 4,515	Re: How high can I safely rev the automatic motor? Mines set at 6200 with 6800 limit __________________ 2012 Kona Blue Metallic BOSS MOMS Racing... 11.92@115.43 stock besides drag radials http://www.dragzine.com/news/moms-ra...2013-schedule/

08-16-2010, 12:16 AM	#8
Newskool Mach 10 second club! Join Date: Jul 2007 Location: Royal Palm Beach FL. Posts: 2,472	Re: How high can I safely rev the automatic motor? Shift mine at 6300 and go through the traps at 7000. Rev limiter is set at 7200. I have an aftermarket converter though. Good luck... __________________ 2014 GHIG GT auto soon to have the whoosh 03 Torch red auto (gone)

08-19-2010, 12:59 PM	#9
WhiteautoMach Registered User Join Date: Oct 2008 Location: Reno, NV Posts: 472	Re: How high can I safely rev the automatic motor? Are you guys playing with fire since Darren said 6000ish blows out the stock converter and the c clip? __________________ '03 Automatic. No silencer, K&N FIPK, 3450# race weight, drag radials, cat back, custom tune, alum. driveshaft, intake spacer, raised scoop, underdrive pulleys, larger subframe connectors, synthetic engine oil, removed front sway bar, battery to trunk, 2.06 60', 12.99 @ 107.4

08-19-2010, 01:23 PM	#10
jaimoe Speed addict Join Date: Apr 2007 Location: Miami, FL Posts: 648	Re: How high can I safely rev the automatic motor? an OCCASIIONAL excursion above 6000 isn't gonna hurt it, but beating the snot out of it all the time will cause the trans to possibly grenade. __________________ Best time 1/8th mi--7.65@90MPH 2003 DSG Mach 1 99/01 Cobra front bumper Darrin-Matic w/3500 stall converter 100 Shot 4.10 Gears Stock Springs KYB AGX adjustable shocks/struts tubular LCAs UPR dbl adj UCAs Custom SCT Tune 255/40/18 front 295/35/18 rear FR500 Wheels Custom RAI UPR O/R X-Pipe Roy spacer Flowmaster 40's I may not be as good as I once was, but I'm as good once as I ever was." "Just an old man having fun"

08-19-2010, 04:16 PM	#12
jaimoe Speed addict Join Date: Apr 2007 Location: Miami, FL Posts: 648	Re: How high can I safely rev the automatic motor? I got one of his trannies and converters. Best mod I ever did. __________________ Best time 1/8th mi--7.65@90MPH 2003 DSG Mach 1 99/01 Cobra front bumper Darrin-Matic w/3500 stall converter 100 Shot 4.10 Gears Stock Springs KYB AGX adjustable shocks/struts tubular LCAs UPR dbl adj UCAs Custom SCT Tune 255/40/18 front 295/35/18 rear FR500 Wheels Custom RAI UPR O/R X-Pipe Roy spacer Flowmaster 40's I may not be as good as I once was, but I'm as good once as I ever was." "Just an old man having fun"

08-19-2010, 06:17 PM	#14
2k4mach LuLz Join Date: Dec 2003 Location: Cedar Park, TX Posts: 19,294	Re: How high can I safely rev the automatic motor? the motor can be taken to 7200 without much worry, much more than that and the rod bolts on the stock bottom end will become a concern....... now the auto i wouldnt push much higher than say 62-6300 without it being built, your playing with fire with the stock c-clip setup. __________________ 11 Sterling gray GT500 coupe 08 Silver Z06 1058rwhp/1073rwt @ 15psi 14 Silver Q50S Vortech blown 04 DSG Mach 1 (stolen) 03 OW Mach 1 (sitting in a field rotting away)

08-20-2010, 08:05 AM	#16
jaimoe Speed addict Join Date: Apr 2007 Location: Miami, FL Posts: 648	Re: How high can I safely rev the automatic motor? How much $ is that combo from him? Do I send him my stock stuff as a core? This is my daily driver (10,000 miles a year) so what converter is best? Call Darrin and ask him. I don't like quoting prices for other people's businesses. But you will be suprised at how little it is. Darrin is very knowledgeable and very very easy to do business with. My car was and still is a DD. I put on 10-12K miles per year. I go to the track 1-2 times a month. You will also be suprised at how streetable one of his converters will be. I wish I had gone a little more stall than the 3500 I got. __________________ Best time 1/8th mi--7.65@90MPH 2003 DSG Mach 1 99/01 Cobra front bumper Darrin-Matic w/3500 stall converter 100 Shot 4.10 Gears Stock Springs KYB AGX adjustable shocks/struts tubular LCAs UPR dbl adj UCAs Custom SCT Tune 255/40/18 front 295/35/18 rear FR500 Wheels Custom RAI UPR O/R X-Pipe Roy spacer Flowmaster 40's I may not be as good as I once was, but I'm as good once as I ever was." "Just an old man having fun"

04-30-2017, 10:54 AM	#18
Oxford04auto Registered User Join Date: Jul 2016 Location: Nampa,idaho Posts: 45	Re: How high can I safely rev the automatic motor? This is a good read,so who is darrin

05-12-2017, 01:24 PM	#20
Fauxnali What's Shakin' Join Date: May 2011 Location: St Albert Alberta Posts: 706	Re: How high can I safely rev the automatic motor? What happens when the c-clip displaces itself? I have heard of this happening, I'm assuming its a centrifugal force thing brought on by high RPM's? Without any other modifications than the Spiral Clip, what kind of HP can that tranny handle? __________________ 1971 Mustang Coupe Sold 1985 Mustang GT T-tops Sold 2003 Azure Blue IUP Automatic One of 453 #2290 of 9652 Built on February 24th 2003 Eibach Pro-Kit, no ISO's in rear Magnapacks CatBacks Mac O/R X-pipe K&N Drop in filter 4.10 Ford Racing Gears SCT Tuned by Bama Best 1/4 13.34 @ 104.40 Instagram @johnny_kipp

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