New leaf springs on my 71 duster

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Andrew vanman87

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I was wondering who sells good leaf springs for my 71 duster currently a slant six car with a 7 and 1/4 but I have a A body. 8 3/4 rear that I plan putting in the car along with a 340. So my question is what are my options for leaf springs? Only thing I seem to find was slant 6 springs or hotchkes springs ... Could I put a leaf spring on it that will work with the 8 3/4 or should I wait to just put new springs on it when I do the 8 and 3/4 swap?
 
springs will work with either 7 1/4 or 8 3/4. just need the proper U-bolts and shock plates.

as far as springs go I'd call espo. call them. the lady there is great. id go with their 6 leaf V8 springs in whatever height you want. the V8 springs use a larger eye bolt. easy enough to drill the front hanger to the proper size.
Spring and Suspension Specialists | ESPO Springs n Things





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Espo Spring in Pennsylvania and Mancini Racing outside of Detroit are frequently used sources.
 
The leaf springs are indifferent to if it’s connected to a 7 1/4, 8 1/4 or 8 3/4. The U bolts and shock plates do care though.

ESPO springs. Give them a call.
 
Andrew vanman87 said:
I was wondering who sells good leaf springs for my 71 duster currently a slant six car with a 7 and 1/4 but I have a A body. 8 3/4 rear that I plan putting in the car along with a 340. So my question is what are my options for leaf springs? Only thing I seem to find was slant 6 springs or hotchkes springs ... Could I put a leaf spring on it that will work with the 8 3/4 or should I wait to just put new springs on it when I do the 8 and 3/4 swap?
Click to expand...
Springs are compatible regardless of whether it's a 7.25 or an 8.75 rear end. What you need to decide is what you want for a spring rate and ride height. The only thing that will change (along with your driveshaft length) when you install the 8.75 are the u bolts and the shock plates- the 8.75 has larger diameter axle tubes.
 
Thanks for the information guys I'll check out Mancini I just was having a hard time finding some of the internet.... I wanted to leave spring that was going to put up with the abuse of the 340 I plan to put in it... Possibly throw the spring in now ( because the current springs now are pretty blown out old ) I was hoping that I'd be able to have at least bring that would work with my 8 and 3/4 when I do my upgrade I have the shock plates and all the hardware for my 8 and 3/4 just minus the leaf springs.
 
ESPO, General Spring and Mancini would be three good choices. I would tend to not recommend the Mopar Performance springs. They had a bad run being made in Mexico some time back and I don't know if they ever solved that or not. So you've been warned.
 
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Really? You disagree? Okay, you'll find out the hard (expensive) way.
 
All good- that happens all the time, you just have to make sure of your entries.
I mentioned the poor positioning of the "X" to @Joeychgo a while back, but didn't seem to think it would be easy to fix or move...
 
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