Hey Moparclown - thanks, don't know if this helps you out any, but in my opinion the 043 are not original for a '70 340 Chally. Here's why. Plymouth had a soft spot, it seems, for the 340 'Cuda. Giving unto them, the above standard items, among many others. The small block was quite a performer in an E Body once given those goodies. 0-60mph times were basically equal to a Hemi then faded hard in the second half of the 1320.

I owned a '70 340 'Cuda and sold it later, but I did keep the rear axle (3.55 Sure grip) and leaf springs. The 024/034's that I inquired of. I learned most everyhing I know from Mopar mags written by those who know what I don't. Among the things I learned was the S15 XHD suspension given to 340 'Cuda's. Since 70440+6BBl has confirmed what I thought - that they are 'Hemi' springs, I would only surmise they were original to the car, just as I had learned in the early 90's.

It may be that when I take the original springs from my 383's rear axle next weekend I will find it has the 043 springs too. Again - 044 is the code on the BCS.

Did Dodge have a soft spot for the 340 cars too, I think so, even if Plymouth gave the 340 as a no cost option and Dodge charged extra! Hope this helps any, don't take my word alone, maybe someone can tell us both for sure. Have a blast this summer with that Chally of yours Moparclown.

340 Challengers too Doug.

Dodge had a soft spot, but I guess it wasn't for their 340 cars. If Barry is right, and I'm not at all questioning this, then the S15 susp with 024/034 springs were optional on Challys and not standard. So that 043 springs were standard fare for 340 Challengers, not 340 'Cudas.

There is only the question of a non-R/T 340 Challenger V8 vs a real 340 R/T and to which spring was standard, maybe both came standard with 043 and 024/034 was optional on both?

With a little more investigation Moparclown...you can find out for sure - unless the answer was just given by our good man Barry W. Thanks guys.

OK, just dug up a bunch of buildsheets that I have collected over the years from parts cars, etc...

IIRC- Plymouth only included the 15" wheel standard on 340 'Cudas for the early part of the 1970 model year, then the 14" became standard. The Hemi suspension was mandatory with axle package cars, but not with 3.23 rears...
I have a sheet for BS23H0B321856 with a SPD of 429 and it clearly lists rear springs as 043/043. Shows 3.23 with D91 sure grip. Car has the W23 Road Wheel option. Also lists- S13 suspension...

'70 Barracuda BH23C0B123929 013/013
'70 Barracuda BH23C0B377778 013/013
'70 Challenger JH23G0B191253 014/014
'70 Barracuda BH27G0B249777 044/044 (misprint maybe???)
'70 Challenger RT/SE JS29V0B147156 024/034 S15
'70 Challenger JH23L0B193551 043/043
'70 'Cuda BS23N0B209441 043/043 S15
'70 Barracuda BH23N0B211062 024/034 S15
'70 'Cuda BS23N0B216454 024/034 S15
'70 'Cuda BS23U0B367830 024/034 S15 (Very cool as the fender tag and both sheets list the engine code as E87 and engine code as 122 which is 440+6bbl built to heater specs)
'70 'Cuda BS23R0B146459 024/034 S15

Now we're talkin' - it pays to keep diggin' for the truth. The info just provided is much needed and goes beyong just the AAR springs and their part numbers. The AAR springs are 4 1/2 leaves, but special, they add a height increase to rear for clearance for the side exit exhaust. Thanks for taking the time to upload all those BCS's 70440+6bbl, cool brother.

The Challenger with the 383 2bbl, L code, it has 043 springs listed. Maybe I am missing something here, but they may be a standard vs HD standard compared to my 044 code. Will be good to know if the 044 code is actually standard HD springs for conv.'s.

Yes a conv, I made sure to post my VIN: BH27NOB earlier in the thread to help clarify this issue of what is original to what cars, especially those missing a BCS where this info is recorded. Barry mentioned 'Cudas and R/T's for the 043 springs pictured and since my 383 4bbl is closely related to a 'Cuda in small ways I wanted to include for our discussion.

I think I mentioned the parts catalog listing a standard spring (043?), for which there is a HD counterpart (044?), and then there are the HD springs with their Extreme duty counterparts. Would like to help Moparclown get the right parts the first time around. What is your opinion for his 340 Challenger. Thanks Barry for setting me straight on the 340 going into only Challenger V8's.

I know convertibles had heavier rate rear springs because of the additional weight & I thought A/C had something to do with rear springs also but I guess not. EDIT - I added a few, thought I had some convertibles (somewhere?).
Axle packages "upped" the springs on 340/383 cars.
Went thru a bunch of b'cast sheets:

JH23C - 013/013
JH23C - S13 - 042/042
JH23G - 014/014
JH27G - 015/015
JH23H - S13 - 043/043
JH27H - S13 - 044/044
JH23J - S13 - 048/048
JH23L - S13 - 043/043
JH23N - S15 - 034/024
JS23N - S13 - 043/043
JS23N - S15 - 034/024
JS27N - S13 - 044/044
JS29N - S13 - 043/043
JS23U - S15 - 034/024
JS23U - A36 - S15 - 034/024
JS23V - S15 - 034/024
JS23V - A32 - S15 - 034/024
JS23V - A33 - S15 - 034/024
JS23V - A34 - S15 - 034/024
JS29V - A36 - S15 - 034/024
JS23R - S15 - 034/024
JS23R - A32 - S15 - 034/024
JS23R - A33 - S15 - 034/024
JS23R - A34 - S15 - 034/024
JS27R - A34 - S15 - 034/024

BH23B - 013/013
BH23G - 014/014
BP23G - 014/014
BH27G - 015/015
BS23H - S13 - 043/043
BS23H - A31 - S15 - 034/024
BS27H - S13 - 044/044
BS23J - S13 - 048/048
BS23N - S13 - 043/043
BS23U - S15 - 034/024
BS23U - A36 - S15 - 034/024
BS23V - A32 - S15 - 034/024
BS23V - A34 - S15 - 034/024
BS23R - A33 - S15 - 034/024
BS23R - A34 - S15 - 034/024

All 1970 cars, the spring numbers are listed first;

Edit, new larger list;

013 & 013 - BH23C, JH23B, JH23C,

014 & 014 - BH23G, BH23L, BP23G, BP23L, JH23G, JH23L, JH27C, JH29G

015 & 015 - BH27G, BP27G, JH27G, JH27L

034 & 024 - BS23H, BS23N, BS23R, BS23U, BS23V, JH27N, JS23N, JS23U, JS23R, JS23V, JS27V, JS29U, JS29V

034 & 014 - BS23V (the 1 is likely a typo)

042 & 042 - JH23C,

043 & 043 - BH23G, BS23H, BS23N, BS23U, BS23R, BP23G, BP23N, JH23H, JH23G, JH23L, JH23N, JH29G, JS23N, JS23R, JS23U, JS23V, JS29N, JS29U, JS29V,

044 & 044 - BS27H, BS27N, BP27G, JH23H, JH27H, JH27G, JH27L, JH27N, JS27N, JS27V

048 & 048 - BS23J, JH23J

072 & 072 - VH29B, VL29C, VL29G

073 & 073 - VL41C, VL41G

081 & 081 - VS29H

If anyone has a broadcast sheet for a 1970 Hamtramck car showing a combination not listed above, please scan it and send me a copy?

Barry

Uh huh - like I said weeks ago, surround your self with the best, you'll get where you want to be. Thanks guys, I bet Moparclown feels the same.

As these are just a bunch of numbers, I'll take the step to try to decipher them.

We see the conv's get the heavier rated 044 springs to their 043 HT counterpart.

We also see that 340 Challenger V8's have 2 springs offered. The 043, that may be original to Moparclown's 340 - I'll go ahead and sign off on that, especially as he feels that they are just that - and the 044 for Conv AND HT. We see NO convs with the 043 springs, as well.

Barry ( ) shows a few 318 cars that came with the 043's that the 383 R/T's & 'Cudas came with, impressive. Even 318 conv's that have the 044 springs, impressed again.

Also seen is that all cars listed lacking S15 susp also lack the 024/034 'Hemi' springs. I think I saw a 340 'Cuda lacking S15 susp...just as was told to me by 70440+6bbl earlier - would be after the period in the model year also mentioned.

Good stuff guys, thanks too to Dan ( ) for his time to help us out here to learn by comparison.
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I've only been wrong once. That's when I thought I was wrong....but I was really right! East

Here's the thread conv440, hope it helps.

Anybody know what the arch is supposed to measure on the AAR springs? Where is this measured from, center of eyelets to inside of spring arch?