I've got a 92 RS. I'm in need of a front spindle and also am looking for a posi unit or a whole rear end with posi. Just wondering if most of or any of these chassis/suspension parts are interchangeable between 3rd and 4th gens?? Although the rear end i need to keep 3rd gen because i'm using 3rd gen rims and if my research is correct, the 3rd and 4th gen rear ends are different widths. so, any of you f-body experts with some info, fire away. Any info is appreciated!
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1992 RS 305 TBI, 700r4, 3:42 gears, Detroit TrueTrac Limited Slip, MSD wires, coil, cap & rotor, Hypertech Chip, 180 degree thermostat, 200 degree fan switch, -
The rear axle assembly and the rear suspension of the 3rd and 4th Gens are virtually identical, except that the 3rd Gen 10-bolt rear axle assembly is 3" narrower than the 4th Gen 10-bolt assembly, as you have already noted. The carrier/posi/gears are fully interchangeable. Some 3rd Gens have a fairly rare 9-bolt Borg-Warner 9-bolt rear, made in Australia, so make sure you don't have one of those before you try and swap the posi/carrier/gears. You can identify the rear simply by counting the bolts on the cover plate.
The front suspension is a different story. The 3rd Gen uses a true McPherson strut suspension, with a coil spring separate from the strut, the 4th Gen uses an unequal length upper/lower A-arm configuration, with a coil-over shock/spring assembly. It would be pure chance if any pieces were in any way interchangeable.Fred
381ci all-forged stroker - 10.8:1 - CNC LT4 heads/intake - CC solid roller - MoTeC engine management - 8 LS1 coils - 58mm TB - 78# injectors - 300-shot dry nitrous - TH400 - Gear Vendor O/D - Strange 12-bolt - 4.11's - AS&M headers - duals - Corbeau seat - AutoMeter gauges - roll bar - Spohn suspension - QA1 shocks - a few other odds 'n ends. 800HP/800lb-ft at the flywheel, on a 300-shot. 11.5 @ 117MPH straight motor -
i agree with fred but u can use a 4th gen rear in a 3rd gen, just the wheels will stick out 1-1.5" depending on the wheel but u wouldnt have to buy spacers if u went with a 4th gen off-set. try to get a 3.42 gear set outta a v8 car2009 Honda Civic EX- the daily beater
old toys - 1983 trans am, 1988 trans am, 1986 IROC-Z, 2002 Ram Off-Road, 1984 K10, 1988 Mustang GT, 2006 Silverado 2500HDComment
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The only way to make the wheels fit under a 3rd Gen chassis with a 4th Gen rear would be to buy the correct, larger positive offset wheels. You can't add spacers.... that would make the wheels stick out even farther.Fred
381ci all-forged stroker - 10.8:1 - CNC LT4 heads/intake - CC solid roller - MoTeC engine management - 8 LS1 coils - 58mm TB - 78# injectors - 300-shot dry nitrous - TH400 - Gear Vendor O/D - Strange 12-bolt - 4.11's - AS&M headers - duals - Corbeau seat - AutoMeter gauges - roll bar - Spohn suspension - QA1 shocks - a few other odds 'n ends. 800HP/800lb-ft at the flywheel, on a 300-shot. 11.5 @ 117MPH straight motorComment
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fred i was refering to the fact that if he had bought a aftermarket set of wheels with the 4th gen off-set he wouldnt have to buy spacers for the rear2009 Honda Civic EX- the daily beater
old toys - 1983 trans am, 1988 trans am, 1986 IROC-Z, 2002 Ram Off-Road, 1984 K10, 1988 Mustang GT, 2006 Silverado 2500HDComment
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