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Technical => Drivetrain Tech => Topic started by: the_intimidator03 on June 06, 2006, 09:07:55 PM

Title: trans tag info needed 84 4 speed(mustang)
Post by: the_intimidator03 on June 06, 2006, 09:07:55 PM
Update

I picked up this transmission today and i am curious if anyone can double check that this tag matchin the description of 84 mustang 4 speed 2.3 it would be a german 10 bolt i beleive. the tag is 78ET BA
FOG 9E 23F
also.... is it possible to get the gear ratios for this transmission by this tag? like first 2nd and 3rd?

thanks yall
Eric
Title: trans tag info needed 84 4 speed(mustang)
Post by: V8Demon on June 06, 2006, 09:29:42 PM
It SHOULD be an SROD.  If you click on the picture in this link below it will give you a parts listing:http://www.alldriveline.com/transmissions/frugacp.html
Title: trans tag info needed 84 4 speed(mustang)
Post by: the_intimidator03 on June 06, 2006, 09:44:47 PM
it does look just like that that doesnt seem to match years but... i think it works... still tryin to figure  ratios
Title: trans tag info needed 84 4 speed(mustang)
Post by: V8Demon on June 07, 2006, 03:41:47 PM
There are 2 different types of SROD.  One is german built, the other American.  I'm not sure which is which but, one has a cast iron case, the other has an aluminum case.

The ratios are as follows:
Cast iron case:  1st: 3.29    2nd: 1.84    3rd: 1.0    4th: 0.81
Aluminum:        1st: 3.07    2nd: 1.72    3rd: 1.0    4th: 0.70

From what I understand the aluminum case was meant for less heavy passenger cars and the iron case was for trucks.  That would explain the lower gear ratios of the iron case units.
1984 was the model year when the SROD was phased out in favor of the T-5.  Early 84 models had the SROD, later ones had the T-5
Title: trans tag info needed 84 4 speed(mustang)
Post by: TurboCoupe50 on June 07, 2006, 06:24:47 PM
Quote from: Paul Flockhart
1984 was the model year when the SROD was phased out in favor of the T-5.  Early 84 models had the SROD, later ones had the T-5


Sorry Paul, you're a year late... T'was '83... Know a guy who ordered a '83 Stang new. He waited till they were taking orders for the T5 before he ordered...

This is also likely why the '83 Turbo Coupe was a mid-year entry, they were ALL 5 speed...

The (maybe, maybe something else)SROD 4 speed trans was in the NA 2.3 Stangs through '86, then they got the T5 for '87..
Title: trans tag info needed 84 4 speed(mustang)
Post by: Haystack on June 07, 2006, 11:54:43 PM
Could this be the same trans that is in my 78 e-150? Cause I know the trannies are hard to find. All the mustang guys pull them.
Title: trans tag info needed 84 4 speed(mustang)
Post by: the_intimidator03 on June 08, 2006, 01:07:24 AM
well my 86 2.3 mustang came equipped with 4 speed and 87 was 5 speed or auto..... nada else.... but some of the early mid 80's had optional 5 speed or 4 speed and automatic
Title: trans tag info needed 84 4 speed(mustang)
Post by: V8Demon on June 08, 2006, 10:59:51 AM
Quote from: TurboCoupe50
Sorry Paul, you're a year late... T'was '83

Tom's correct.  The first year of the T-5.  The SROD was used in 83 and 84 as well (seen a couple in some 84's)  Never seen one in an 85 or newer passenger car though.
Title: trans tag info needed 84 4 speed(mustang)
Post by: the_intimidator03 on June 08, 2006, 12:00:53 PM
well paul i wish i had an interior picture of my 86 mustang for ya then.... because it was an 86 2.3 lx stang with 4 speed ( non svo) 3.08 rear gears
Title: trans tag info needed 84 4 speed(mustang)
Post by: TurboCoupe50 on June 08, 2006, 12:23:15 PM
Quote from: the_intimidator03
well paul i wish i had an interior picture of my 86 mustang for ya then.... because it was an 86 2.3 lx stang with 4 speed ( non svo) 3.08 rear gears


Basically Paul and I are talking 5.0 and turbo 2.3 applications...

I've already stated the NA 2.3 Stangs used a 4 speed tranny through '86, had one as well...
Title: trans tag info needed 84 4 speed(mustang)
Post by: the_intimidator03 on June 08, 2006, 07:28:22 PM
oh ic........ :-p i knew that
Title: trans tag info needed 84 4 speed(mustang)
Post by: the_intimidator03 on June 12, 2006, 09:45:25 PM
OK....i came up with these ratio numbers for the transmission.... i did this by turning the output shaft 10 times and counting how many times the input shaft turned (g/f counted)  so these numbers are rough...... these ar ethe gears in turns then the ratio
R 40 3/4 turns 4.08
1st 40 3/4 turns 4.08
2nd 21 1/2 turns 2.15
3rd 14 1/4 turns 1.43
4th 10 turns 1.00

SO.... am i figuring these out the right way? by turnin output shaft 10 times and counting input shaft turns for all those gears?
Btw this has a cast iron center.... aluminum bellhousing and tail shaft :-|
Title: trans tag info needed 84 4 speed(mustang)
Post by: TurboCoupe50 on June 13, 2006, 05:14:13 PM
close enough....
Title: trans tag info needed 84 4 speed(mustang)
Post by: the_intimidator03 on June 13, 2006, 05:48:49 PM
i dont think ive EVER seen a passenger car with a 4.08 or near 1st!... and it being 83 mustang SHOULD be SROD which means the 4th should be overdrive :)) but its 1:1... well i shouldnt bitch.... ill be runnin 3.73's lol
Title: trans tag info needed 84 4 speed(mustang)
Post by: TurboCoupe50 on June 13, 2006, 06:04:48 PM
The 2.3 T5s have a 3.97 1st. Also I believe early T5s used in the SVO Stangs had a 4.03.
Title: trans tag info needed 84 4 speed(mustang)
Post by: srv1 on June 13, 2006, 10:44:42 PM
Do you have the bellhousing for this transmission? It isn't the same as the T5. If you do have it, KEEP IT!! This is the bellhousing you need to run a Tremec trans!!

James
Title: trans tag info needed 84 4 speed(mustang)
Post by: the_intimidator03 on June 14, 2006, 12:46:52 AM
the srod 4 speed bellhousing? yeah ive got it >:) i plan on pickin up several more of these transmissions in the next couple of years
 with bellhousings tooo.
Title: trans tag info needed 84 4 speed(mustang)
Post by: V8Demon on June 14, 2006, 06:31:38 PM
That's some rather interesting gear ratios for an SROD.....
As you stated yourself.  4th SHOULD be OD.  Can you snap off some pics of this anomoly?
Title: trans tag info needed 84 4 speed(mustang)
Post by: the_intimidator03 on June 14, 2006, 10:21:24 PM
tell ya what.... ill get pictures then when i get them developed..... ill scan em... who knows when that will be probably by early next month
Title: trans tag info needed 84 4 speed(mustang)
Post by: V8Demon on October 01, 2006, 10:14:45 PM
Just dug this thread up while looking up something.  Seems you have a T-04 transmission.
Title: trans tag info needed 84 4 speed(mustang)
Post by: the_intimidator03 on October 03, 2006, 05:15:08 PM
ok.. thank you... still want pictures of this? i can take them and get them developed here this month i beleive. i just primered it... getting ready to paint it white.  btw u dont happen to know if any of the speedo units will interchange into this transmission from a ranger M5OD R-1 or cougar C5 or A4LD?
Title: trans tag info needed 84 4 speed(mustang)
Post by: Chuck W on October 03, 2006, 06:42:03 PM
The C5 speedo unit and gear should work.  All you can do is give it a try and see if it fits and the hold-down bracket lines up.
Title: trans tag info needed 84 4 speed(mustang)
Post by: the_intimidator03 on October 04, 2006, 06:43:04 PM
ok thank you chuck... i cant remember how many teeth the speedo gear has for 3.73's... i think its the orange one ive got...ah hell ill find out... thanks again