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#1
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1973-77 rear springs
Does anyone know if '68-'72 rear springs are the same as the '73-'77 rear springs? I'm looking to put a set of Moroso trick springs on the back of my '76 Grand Prix and I'm not sure if they are the same.
Thanks in advance. |
#2
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Not the same
As far as I know, they're not the same. Get a pair from Summit Racing or Ames Performance from their catalog. Better yet call them and they'll ensure you get the right one.
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1974 Lemans Sportecoupe GT (daily driver) .030 over 354, #47 heads (84cc), Lunati voodoo 700 camshaft (207/213 @ .050), logs, 2.5 duals, X-pipe and Dynomax super turbo mufflers, 3.08 rear |
#3
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They are not the same, if you are just trying to raise the rear end a bit, I used to put same year El camino Springs in, I tried A-Body Station Wagon Springs once, but they were a little to Stiff of a ride. But the 73-77 El camico springs always worked on my 75-77 GP's.
74-77 should be the same, the 73 springs are a bit lighter as they did not have the 5mph bumpers on the back yet.
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Jeff R 60 Jaguar Mark 2, 3.8L Automatic 67 Sprint Firebird 230 OHC-6 4-Speed A/C 78 Catlina Safari, Pontiac 400 powered 77 Astre Formula, 215 Buick V-8 T-5 73 Lemans Safari, 400 4bbl 4-speed 71 Catalina Enforcer, 455 4bbl 06 Mallet Solstice #024 LS2, Now with a Tremec 6060 6-speed! 2012 F-150 Echo Boost (My local Ford Dealer SUX!!!) 2020 Dodge Charger Scat pack (recovered) |
#4
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#5
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On a side note, if you're looking for another source for springs that will fit our 73-77 A-body, the '94-'96 Impala-SS springs are a direct fit. I installed a Hotchkiss kit on my Can Am at all 4 corners in 2018 intended for the Impala-SS and they were a direct bolt-in.
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Just a blind squirrel looking for a nut. |
#6
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#7
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That makes sense as I was told years ago by a GM Chassis designer that the 77-95 B-Body Chassi was based off of the 73-77 A-Body Chassis. I know for a fact that front Sway bars and front spindles swap between them.
never thought about rear springs though.
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Jeff R 60 Jaguar Mark 2, 3.8L Automatic 67 Sprint Firebird 230 OHC-6 4-Speed A/C 78 Catlina Safari, Pontiac 400 powered 77 Astre Formula, 215 Buick V-8 T-5 73 Lemans Safari, 400 4bbl 4-speed 71 Catalina Enforcer, 455 4bbl 06 Mallet Solstice #024 LS2, Now with a Tremec 6060 6-speed! 2012 F-150 Echo Boost (My local Ford Dealer SUX!!!) 2020 Dodge Charger Scat pack (recovered) |
#8
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Quote:
I understand other parts are interchangeable as well, such as the steering gearbox. Apparently those 90's B-body frames were just about identical to the '73-'77 A-body frames.
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Just a blind squirrel looking for a nut. |
#9
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Steering boxes from 1985-1996 Caprice police or Impala SS are a huge upgrade over the original 1970's variable ratio, zero road feel boxes. The Caprice hydraulic fittings are o-ring, but Lee MFG. sells adapters, and the input shaft spline count is different for 1973-76 A bodies, but a direct fit for 1977 A bodies. You will need a different rag joint for those earlier A bodies.
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1976 LeMans B09 Freeway Enforcer, 455/M40 Smokey 1977 Trans Am, 400/M21 Black/Gold Bandit. 44K actual miles 2017 Sierra SLT 1500 Z71 4X4 2019 Canyon SLT Crew 4X4 |
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