Which Leaf Springs to match my Torsion Bars?

[YoungBlood]

I was just about to pull the trigger on MP XHD Leafs then use a 1-2" lowering block when I ran across this site a site that gives the notion that matching torsion bar rates should somewhat match leaf spring rates for the best ride quality. I want the best ride quality!

I have PST 1.03" Torsion bars and it doesn't say the lbs the bar is.
http://www.p-s-t.com/pc-4708-177-ply...r-1960-76.aspx

Are they 300lbs? Or what?

Are MP XHD's already the perfect choice? Or Hotchkis?

Or Oval Track springs? If so, which ones?

I plan on using Hotchkis Bilstein shocks and 1.125" front and 7/8" rear sway bars.

Thanks!

 

[autoxcuda]

I was just about to pull the trigger on MP XHD Leafs then use a 1-2" lowering block when I ran across this site a site that gives the notion that matching torsion bar rates should somewhat match leaf spring rates for the best ride quality. I want the best ride quality!

I have PST 1.03" Torsion bars and it doesn't say the lbs the bar is.
http://www.p-s-t.com/pc-4708-177-ply...r-1960-76.aspx

Are they 300lbs? Or what?

Are MP XHD's already the perfect choice? Or Hotchkis?

Or Oval Track springs? If so, which ones?

I plan on using Hotchkis Bilstein shocks and 1.125" front and 7/8" rear sway bars.

Thanks!

You will not need a lowering block with the Hotchkis leaf springs.

I'd go Hotchkis or MP XHD.

Thing is the MP leafs don't have the extra leafs top and bottom next to the front eye to prevent rear end hopping under acceleration AND braking.

My old springs are stock OE 1968 340 Formula S leaf springs. The black ones are Hotchkis leaf springs.

 

[YoungBlood]

You will not need a lowering block with the Hotchkis leaf springs.

I'd go Hotchkis or MP XHD.

Thing is the MP leafs don't have the extra leafs top and bottom next to the front eye to prevent rear end hopping under acceleration AND braking.

My old springs are stock OE 1968 340 Formula S leaf springs. The black ones are Hotchkis leaf springs.

Holy crap those Hotchkis look like they're the way to go.

On a side note: I have researched that getting the back of the car down 2" would make a lot more difference than one would think (actually, doing so makes it handle much better was what I learned), but can I run a 27" tire out back if I go with the Hotchkis or XHD's w/ 2" block?

Thinking about a 255/50R17:
http://www.summitracing.com/parts/RIK-11262/

 

[Commando66]

If you want to try some super stock springs, I have some for sale just down the road.

 

[805moparkid]

Holy crap those Hotchkis look like they're the way to go.

On a side note: I have researched that getting the back of the car down 2" would make a lot more difference than one would think (actually, doing so makes it handle much better was what I learned), but can I run a 27" tire out back if I go with the Hotchkis or XHD's w/ 2" block?

Thinking about a 255/50R15:
http://www.summitracing.com/parts/RIK-11262/

do not use lower blocks... there mde from crappy pot aluminum(unless you buy billet ones$$)

also you can flip the front spring hanger for 1-1.5" drop...

nice ride with XHD...

 

[autoxcuda]

Holy crap those Hotchkis look like they're the way to go.

On a side note: I have researched that getting the back of the car down 2" would make a lot more difference than one would think (actually, doing so makes it handle much better was what I learned), but can I run a 27" tire out back if I go with the Hotchkis or XHD's w/ 2" block?

Thinking about a 255/50R17:
http://www.summitracing.com/parts/RIK-11262/

You will not need 2" blocks with the Hotchkis springs. They put the car plenty low.

With 255/50/17 run a 17x8 with 4.5 rear backspacing should be fine.

Even billet spacers are not really desired for handling. Especially something like 2". They put leverage on the axle when you are cornering and hurt locating the rear end side to side. Also, the springs will still have a big arch on them which create rear roll steer. For handling, it's actually better to have them near flat with slight arch.