'71 GTX - Ralley dash and 741 stock?

Technical Question and Answer - On topic to 71-74 Plymouth B-bodies only.

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NOrrTH
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'71 GTX - Ralley dash and 741 stock?

Post by NOrrTH » Fri Sep 18, 2009 2:58 pm

I dont have the build sheet for my car and am wondering if its possible it came stock with a Ralley dash and 741 third member?

At the moment it does not have a Ralley dash which I find unusual that a supposedly high performance car would not come with a tac

It does have a 741 3:55 posi which apparently is an A body part.

Thanks yet again for any advice :beer:

landon1
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Re: '71 GTX - Ralley dash and 741 stock?

Post by landon1 » Fri Sep 18, 2009 7:25 pm

rallye dash doesn't necessarily mean it would have a tach. there were a few different configurations of the gauges in the rallye panel.

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Re: '71 GTX - Ralley dash and 741 stock?

Post by pettyblue72 » Fri Sep 18, 2009 11:20 pm

The 741 case was not just used in A-Bodies. The 741 was still available in 71 and was used in all Mopar models. Although unlikely, it is possible your car originally came with this third member. However, if your car is an original GTX, it is also possible the third member was swapped out because the 741 was generally used in 340, 318 and /6 powered Mopars and a GTX most likley would have had a 489 case with the cone type suregrip.

As for the rallye dash. Most rallye dashes in 71-74 B-Bodies did not have the tach. If your car has its fender tag, look for the code N85 which is the code for a factory tach. Also look for J21 which is the code for an electric clock. It is also possible your cluster should have the clock option instead of the tach. If this is the case than you can install the tach in a cluster that has the clock. Most likely your cluster should be like most and only has the standard rallye gauges without the clock or tach.

Just for your info. My 72 340/Auto RR is coded for and has its original factory tach rallye cluster.

Joe

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Re: '71 GTX - Ralley dash and 741 stock?

Post by NOrrTH » Fri Sep 18, 2009 11:39 pm

Ah i didnt know that. Thks for the great information. Ya it is an original GTX, no clock or tach option.

I can finally give something back to this forum albeit small. I found a build sheet looking for mine under the rear seat. Its not in the best shape but legible RH23G3("G" or "6") 19752
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landon1
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Re: '71 GTX - Ralley dash and 741 stock?

Post by landon1 » Fri Sep 18, 2009 11:46 pm

1973 318 satellite sebring from St. Louis???? (just a guess, i don't remember my numbers and letters exact)

i think mine starts out RH23G1G - 71, but no longer a 318 :D

i think the 1 means the year, so that would make it a 73 - strange it would be in a 71 if that's right though

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Re: '71 GTX - Ralley dash and 741 stock?

Post by pettyblue72 » Fri Sep 18, 2009 11:55 pm

landon1 wrote:1973 318 satellite sebring from St. Louis???? (just a guess, i don't remember my numbers and letters exact)

i think mine starts out RH23G1G - 71, but no longer a 318 :D

i think the 1 means the year, so that would make it a 73 - strange it would be in a 71 if that's right though

You are correct, the 3 designates it as a 73. It is possible someone swapped the rear seat from a 73 Satellite into NOrrTH's car and that is how the build sheet ended up there.

R=Belvedere(the satellite was based on the belvedere)
H=High price class
23=2 door hardtop
G=318 2bbl
3=1973 model year
G=St. Louis assembly plant

My 72 RR is RM23H2G******

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Re: '71 GTX - Ralley dash and 741 stock?

Post by 71440 gtx » Tue Sep 22, 2009 6:21 am

there are 4 Ralley dashs
1 71-73 standard Ralley dash can not put in a clock or tack standard
2 71-73 Ralley dash that come with clock or tack
3 74 standard Ralley dash can not put in a clock or tack
4 74 Ralley dash that come with clock or tac :beer:
71 gtx 440 4speed air grabber blue on blue with white vinyl roofOption cassette player


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Re: '71 GTX - Ralley dash and 741 stock?

Post by NOrrTH » Tue Sep 22, 2009 1:48 pm

So what does the non-Ralley dash look like? It surprises me that any dash without a tach would be called "Ralley" :lol: Every dash Ive seen looks the same except for either a clock, tach or Alt - Fuel gage (which mine is) in the same position.

Regarding the third member I'm told that that if I want to put it back to stock (either a 742 or 486) that my U-joints and drive shaft will have to be changed...which sucks. The drive shaft in it now is a monster.
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Re: '71 GTX - Ralley dash and 741 stock?

Post by RS23-71 » Tue Sep 22, 2009 4:14 pm

http://img.photobucket.com/albums/v254/ ... dashes.jpg

Top 2 are rallye dashes and the bottom one is non rallye dash as far as I know. These were taking from the '71 satellite brochure - Top one is standard for GTX or Road Runner - Middle one is on the fancier Satellites - Lower one is on more of a basic Satellite.

Basic definition is rallye dashes had round gauges while the non-rallye did not.
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Re: '71 GTX - Ralley dash and 741 stock?

Post by NOrrTH » Tue Sep 22, 2009 4:34 pm

Awesome, thanks!
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Re: '71 GTX - Ralley dash and 741 stock?

Post by RS23-71 » Tue Sep 22, 2009 5:30 pm

I have seen a few 4sp GTXs that did not have the tach. Mine doesnt have one but came with the clock instead and I think its the same with AZ-Nick's 4sp GTX. I can see not getting a tach with an auto, although I would prefer to have it with an auto but to not have one with a 4sp car?

According to Eric from my fender tag, mine was ordered a public relations car whatever that means and it still didn't have a tach. I guess it was more important to know what time it is then what rpm you are turning. :lol:


edit: I just went back a few threads and I made a mistake it wasn't AZ-Nick that had a clock in the dash of his '71 4sp GTX it is 71440 gtx
Last edited by RS23-71 on Tue Sep 22, 2009 11:08 pm, edited 1 time in total.
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Re: '71 GTX - Ralley dash and 741 stock?

Post by pettyblue72 » Tue Sep 22, 2009 10:17 pm

My 72 340/727 RR came with the tach rallye cluster, the 71 383/727 RR I parted a few years back only had the standard rallye cluster with no clock or tach, the 74 318/904 Satellite SSP I stripped had the rallye cluster with the clock and the 74 Charger SE 318/904 I stripped had the standard rallye cluster.

I have seen alot of 71-72 RR's that have just the standard rallye cluster with no clock or tach. The non tach/clock cluster appears standard on RR's and higher end Satellites and chargers while the tach and clock clusters had specific option codes on the fender tags. However, the tag I have for the 74 Satellite SSP does not show the code for the clock on the tag but the car had the clock.

The point is that anything goes with Mopar and who knows what you will find.

Your GTX will only be correct with a 489 case center in your 8.75 rearend. The 742 was discontinued in mid 69. If the driveshaft is original to your car than someone most likely swapped the larger yoke onto the 741 case. If this is the case than you should have no problem using the 489 case in your rearend.

Joe

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Re: '71 GTX - Ralley dash and 741 stock?

Post by AZ-Nick » Wed Sep 23, 2009 2:18 am

RS23 '71 wrote:I have seen a few 4sp GTXs that did not have the tach. Mine doesnt have one but came with the clock instead and I think its the same with AZ-Nick's 4sp GTX. I can see not getting a tach with an auto, although I would prefer to have it with an auto but to not have one with a 4sp car?

According to Eric from my fender tag, mine was ordered a public relations car whatever that means and it still didn't have a tach. I guess it was more important to know what time it is then what rpm you are turning. :lol:


edit: I just went back a few threads and I made a mistake it wasn't AZ-Nick that had a clock in the dash of his '71 4sp GTX it is 71440 gtx

Correct, my 71 GTX 4sp did NOT come with a Tach or a Clock :roll:
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Re: '71 GTX - Ralley dash and 741 stock?

Post by NOrrTH » Thu Sep 24, 2009 4:55 pm

pettyblue72 wrote:Your GTX will only be correct with a 489 case center in your 8.75 rearend. The 742 was discontinued in mid 69. If the driveshaft is original to your car than someone most likely swapped the larger yoke onto the 741 case. If this is the case than you should have no problem using the 489 case in your rearend.

Joe
I guess I'd better start measuring up my driveshaft/yoke and hunt for a 489. There's a bit of a gear howl. No where near as bad as my old 4:10 Challenger or Duster. Maybe they all have a bit of a howl when they're geared tall and have no trunk/rear seat seperator. My cousin, who's a serious drag racer, says ideally a street car with a 440 should have 3:91's in it whereas mine has 3:55's. Also I'd like to go to a 16 or 17" rear wheel to fill up my well a bit more rather than re'arch my springs. There's about an inch or so of daylight between my tire and bottom of my fender.

With regards to the Tach, is it a nightmare to just buy the instruments from a Ralley tach dash and plug em into mine? I'd have to move the alternator and fuel gage as well. or would I just be better off putting and aftermarket tach somewhere?
'71 GTX N96

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Re: '71 GTX - Ralley dash and 741 stock?

Post by pettyblue72 » Thu Sep 24, 2009 10:53 pm

You cannot install a tach into your cluster.

You need to find a cluster that originally had a clock or tach in it from a 71-74 B-Body. Try and get the harness from a 71 car with a tach as I believe the 71 dash harness was a 1 year only with some wiring differences than the later harnesses.

The 489 case should be pretty easy to find since they were used in A, B, C and E-Bodies from late 69-74. If you find a good case, new suregrips and ring/pinion sets can pe purchased new.

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