C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

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Old Mar 18, 2003 | 04:18 PM
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Default c4 suspension

what is the difference between an 84 suspension and an 87? i'm converting my 64
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Old Mar 18, 2003 | 04:20 PM
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Default Re: c4 suspension (richloduca)

not much. the big changes came in 88.

after a couple of years of showroom stock, they redid the suspension in the street cars to take advantage of racetrack development.

The 88 suspension is more predictable and less nervous. There is also more braking and wheel options available for the 88 and later.
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Old Mar 18, 2003 | 04:30 PM
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Default Re: c4 suspension (richloduca)

You should get alot of people chiming in on this subject. The changes are not major between '84-'87. The '84 RPO Z51 package was probably the stoutest suspension. Close ratio rack & pinion (sport) high spring rate in the transverse spring, large dia sway bars, heavy duty shocks, bushings, engine oil coller, extra fan, (pusher) and some wheel changes.

Hope that gets you started.

:lurk:
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Old Mar 18, 2003 | 04:53 PM
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Default Re: c4 suspension (richloduca)

Springs were the major change, the geometry of everything is the same, all parts fit to my knowledge.
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Old Mar 18, 2003 | 05:13 PM
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Default Re: c4 suspension (bogus)

not much. the big changes came in 88.
after a couple of years of showroom stock, they redid the suspension in the street cars to take advantage of racetrack development.
The 88 suspension is more predictable and less nervous. There is also more braking and wheel options available for the 88 and later.
I thought the suspension was mostly the same between spindles, just with different springs. The 88 had a new brake setup which results in the new wheel offset.
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Old Mar 18, 2003 | 06:23 PM
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Default Re: c4 suspension (CentralCoaster)

I thought the suspension was mostly the same between spindles, just with different springs. The 88 had a new brake setup which results in the new wheel offset.
is the '88 the same as '89-up? if so, there are indeed geometry changes. just by looking at it, i see roll center/camber curve changes, and anti-squat changes. as such, that probably means there are changes in toe rods, to keep the bumpsteer within reason.

the spindles are different too, but i forgot to eyeball if the kingpin and/or steering knuckle looked different.
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Old Mar 18, 2003 | 06:31 PM
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Default Re: c4 suspension (richloduca)

what is the difference between an 84 suspension and an 87? i'm converting my 64
:cheers: Did I read that right? You are converting a 64?

There's a Hib Halverson suspension chart on the internet detailing the suspension systems for all C4's and the options that came with or where available.

I'll try to get the address and be right back

:D I am back, it's
http://vettenet.org/susp_chart.html

You will see some big changes after '84

:steering: [I love that Lil Guy!]


[Modified by jackdaroofer, 6:37 PM 3/18/2003]
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