Correcting the Speedo on 4R70W car.

96GTPRT · 06-19-2002, 06:28 PM

Ok I have had my 3.73's in for a while and I havent corrected the Speedo yet. I havent really driven the car much either now that I think of it. Anyway, what is the best way to correct the speedo on a 96 Gt with the 4R70W. The ways I've heard of are, the speedo gear, an abbot box (Spelling?), A chip, ( I dont know which one?) and the Hypertech Power Programer. So whats the best way to go? Price isnt so much of a problem. Any help out there from people with 96-98 4R70W Stangs who have gears would be great or anyone who knows whats up. Thanks for the help.

Hammer · 06-19-2002, 06:31 PM

All you need is a speedo gear for the 96-98 standard tranny modulars...

I'm not certain, but I think the 96-98 autos are the same...

surfbeast · 06-20-2002, 11:33 AM

Hammer is correct as always. The plastic gear for the auto is about 10 - 15 bucks and installs in minutes! I think brothers performance has them in there catalog.

The 99 up cars require a 100 dollar speedo calibrator or chip/programmer

98SteedaGT · 06-20-2002, 04:21 PM

I had the speedo gear installed in my auto, it's not accurate though. I am off by about 5MPH from about 50 and above. I know it's not supposed to be perfect. For my car the speedo gear for 3.73 and 4.10 are the same number of splines, so there's a marginal difference in real speed readings.

surfbeast · 06-21-2002, 09:31 AM

Steeda has the part you need part # 123 - 0023 - $ 15.95

98SteedaGT · 06-21-2002, 09:40 AM

That's the one I have... Like I mentioned, it's for the 3.55/3.73/4.10 and it's all the same part number. ... I guess you were talking to me, if not, then sorry for the reply... hehe

I was wondering about it before I had it installed, what's the deal with having the same number of teeth on a gear and saying it calibrates the speedo correctly if you use the same part for 3 different ratios... oh well, thank god we have police and those lovely radar guns.! :-D

black4v · 06-24-2002, 08:23 AM

Your best bet is a Dallas Mustang Speedcal. Expensive but accurate and worth the money. I don't think a computer chip can calibrate the speedo on 96-98 GT/Cobra's. Only on 99+ stangs.

medrvstang01 · 06-24-2002, 10:32 AM

Can we get a link in this thread from you on where you buy that product......how much????

98SteedaGT · 06-24-2002, 10:38 AM

http://www.dallasmustang.com/speedcal_about.htm

medrvstang01 · 06-24-2002, 10:44 AM

Hmmmmm.....big problem here!

I see that they pre set this for you! That sounds great, but I have two sets of tires....snow.....summer......

If you guys state that the Brothers one is not accurate at all....and this one they pre set........what am I to do...

This sucks....mucho polica.....no afforde tickete.....lose my insurance....hehehe....

I was thinking (like an idiot) that I could tell the speed by the gear and RPM's but not with new gears......hehehe....

98SteedaGT · 06-24-2002, 10:47 AM

This device uses a binary DIP switch to recalibrate it on the inside. If you look on the page, you can use their caclulator to custom tune it to what you need.

medrvstang01 · 06-24-2002, 11:03 AM

I didn't notice that.....thanks for the reply.....this looks like the way to go if you say it's more accurate......

Thanks a bunch!

98SteedaGT · 06-24-2002, 11:08 AM

I believe this device is also only for 5-Spd stangs.. I don't think it works for AODE/4R70W, the harness is different.

medrvstang01 · 06-24-2002, 11:09 AM

I have the 2001-5spd.....

Should work!

black4v · 06-26-2002, 02:27 AM

Quote:

Originally posted by 98SteedaGT
I believe this device is also only for 5-Spd stangs.. I don't think it works for AODE/4R70W, the harness is different.

You might want to check on that. A friend of mine uses it on his 4R70W.

06-19-2002, 06:28 PM	#1
96GTPRT Registered Member Join Date: Apr 2002 Location: Naperville, IL Posts: 69	Correcting the Speedo on 4R70W car. Ok I have had my 3.73's in for a while and I havent corrected the Speedo yet. I havent really driven the car much either now that I think of it. Anyway, what is the best way to correct the speedo on a 96 Gt with the 4R70W. The ways I've heard of are, the speedo gear, an abbot box (Spelling?), A chip, ( I dont know which one?) and the Hypertech Power Programer. So whats the best way to go? Price isnt so much of a problem. Any help out there from people with 96-98 4R70W Stangs who have gears would be great or anyone who knows whats up. Thanks for the help. __________________ 96GTPRT: '96 Laser Red Tinted Mustang GT Convertible. (tan top). Flowmaster cat-back, Bassani X-pipe w/ cats, K&N FIPK, Hypertech 160* t-stat, MSD wires, Bosch plugs, Performance Distributors coil packs, FRPP 70mm throttle body, C&L 87mm mass air. Kenny Brown Super subs, 3.73's, BFGoodrich Comp T/A's Civic...its whats for dinner. Don't ever pull a ricer fly-by!

06-19-2002, 06:31 PM	#2
Hammer AKA "Dr. Evil" Join Date: Feb 1999 Location: South Fork Ranch Posts: 1,721	All you need is a speedo gear for the 96-98 standard tranny modulars... I'm not certain, but I think the 96-98 autos are the same... __________________ Uncle Sam "What the hell is up with all the gauges? Calling Captain Kirk, your ride awaits... Phasers on stun...."

06-20-2002, 11:33 AM	#3
surfbeast Registered Member Join Date: Feb 2002 Location: Maryville,TN Posts: 415	Hammer is correct as always. The plastic gear for the auto is about 10 - 15 bucks and installs in minutes! I think brothers performance has them in there catalog. The 99 up cars require a 100 dollar speedo calibrator or chip/programmer __________________ 98 GT / convertable -98 Saleen engine, Saleen appearance pkg. SHM cams,P&P NPI heads, and so much more!

06-20-2002, 04:21 PM	#4
98SteedaGT Registered Member Join Date: Jan 2002 Location: Texas Posts: 330	I had the speedo gear installed in my auto, it's not accurate though. I am off by about 5MPH from about 50 and above. I know it's not supposed to be perfect. For my car the speedo gear for 3.73 and 4.10 are the same number of splines, so there's a marginal difference in real speed readings. __________________ // 1998 GT-Steeda Conversion \\ -- Sold // Now own 2001 F-150 SuperCrew 5.4L \\

06-21-2002, 09:31 AM	#5
surfbeast Registered Member Join Date: Feb 2002 Location: Maryville,TN Posts: 415	Steeda has the part you need part # 123 - 0023 - $ 15.95 __________________ 98 GT / convertable -98 Saleen engine, Saleen appearance pkg. SHM cams,P&P NPI heads, and so much more!

06-21-2002, 09:40 AM	#6
98SteedaGT Registered Member Join Date: Jan 2002 Location: Texas Posts: 330	That's the one I have... Like I mentioned, it's for the 3.55/3.73/4.10 and it's all the same part number. ... I guess you were talking to me, if not, then sorry for the reply... hehe I was wondering about it before I had it installed, what's the deal with having the same number of teeth on a gear and saying it calibrates the speedo correctly if you use the same part for 3 different ratios... oh well, thank god we have police and those lovely radar guns.! :-D __________________ // 1998 GT-Steeda Conversion \\ -- Sold // Now own 2001 F-150 SuperCrew 5.4L \\

06-24-2002, 08:23 AM	#7
black4v Registered Member Join Date: Jun 2002 Location: Guam Posts: 3	Your best bet is a Dallas Mustang Speedcal. Expensive but accurate and worth the money. I don't think a computer chip can calibrate the speedo on 96-98 GT/Cobra's. Only on 99+ stangs. __________________ Black4v Eric

06-24-2002, 10:32 AM	#8
medrvstang01 Registered Member Join Date: Jun 2002 Posts: 21	Black4V Can we get a link in this thread from you on where you buy that product......how much????

06-24-2002, 10:38 AM	#9
98SteedaGT Registered Member Join Date: Jan 2002 Location: Texas Posts: 330	http://www.dallasmustang.com/speedcal_about.htm __________________ // 1998 GT-Steeda Conversion \\ -- Sold // Now own 2001 F-150 SuperCrew 5.4L \\

06-24-2002, 10:44 AM	#10
medrvstang01 Registered Member Join Date: Jun 2002 Posts: 21	Thanks! Hmmmmm.....big problem here! I see that they pre set this for you! That sounds great, but I have two sets of tires....snow.....summer...... If you guys state that the Brothers one is not accurate at all....and this one they pre set........what am I to do... This sucks....mucho polica.....no afforde tickete.....lose my insurance....hehehe.... I was thinking (like an idiot) that I could tell the speed by the gear and RPM's but not with new gears......hehehe....

06-24-2002, 10:47 AM	#11
98SteedaGT Registered Member Join Date: Jan 2002 Location: Texas Posts: 330	This device uses a binary DIP switch to recalibrate it on the inside. If you look on the page, you can use their caclulator to custom tune it to what you need. __________________ // 1998 GT-Steeda Conversion \\ -- Sold // Now own 2001 F-150 SuperCrew 5.4L \\

06-24-2002, 11:03 AM	#12
medrvstang01 Registered Member Join Date: Jun 2002 Posts: 21	Thanks soooo much! I didn't notice that.....thanks for the reply.....this looks like the way to go if you say it's more accurate...... Thanks a bunch!

06-24-2002, 11:08 AM	#13
98SteedaGT Registered Member Join Date: Jan 2002 Location: Texas Posts: 330	I believe this device is also only for 5-Spd stangs.. I don't think it works for AODE/4R70W, the harness is different. __________________ // 1998 GT-Steeda Conversion \\ -- Sold // Now own 2001 F-150 SuperCrew 5.4L \\

06-24-2002, 11:09 AM	#14
medrvstang01 Registered Member Join Date: Jun 2002 Posts: 21	OK! I have the 2001-5spd..... Should work!

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