, but my '84 rides good
lateral g-force (stock c4)
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Joined: Dec 2006
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From: PA
lateral g-force (stock c4)
does anyone have the numbers on the lateral g-force of a stock c4. I'm not aware of any suspension changes through the 84-96 years. I'm more curiuos about my 86 if that is the case. I've searched the forum and google with no luck. I've only managed to find 1.3g's for the zr-1.
appreciate the help
appreciate the help
Drifting
Joined: Aug 2006
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From: Los Angeles California
A quote taken from a book I've got called "Chassis Engineering" by former GM engineer Herb Adams: "A typical late-model stock Corvette can corner at .84 g's, a very respectable figure." The book came out in '93 so surely he is referring to the C4.
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From: PA
thanks. it's ironic you have a mustang as your pic. i asked because i was curious if the c4's handle better than a 2000 mustang gt. a buddy of mine has the mustang and of course swears by it and thinks nothing is better about his ford (including handling) than my vette.
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From: PA
ya, i do remember reading about the stiffness of the 84-85 stiffness being harder than the later years. apparently it was just too uncomfortable for gm to continue to manufacture and appeal to people looking for a semi-comfortable drive.
Team Owner
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From: Hampton, VA Yea, i'm a redneck... but you love it
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From: San Diego , CA Double Yellow DirtBags 1985..Z51..6-speed
The ZR-1 will not do 1.3 G's, at least not on street tires. What is your source?
Lateral G ratings on these cars are deceiving, as very minor changes can increase it to 1.0G on the skidpad, yet the car can never sustain that in the real world where road imperfections will upset the ultra stiff suspension and throw you off the cliff.
Lateral G ratings on these cars are deceiving, as very minor changes can increase it to 1.0G on the skidpad, yet the car can never sustain that in the real world where road imperfections will upset the ultra stiff suspension and throw you off the cliff.
Melting Slicks
Joined: Jun 2000
Posts: 3,215
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From: Tampa Florida
Heh, mine hit .977 on the skid pad with Goodyear Supercar tires! 
But it wasn't stock...
If I had my Car and Driver magazine collection available I would quote you some numbers. The rating fell as the years went by...soft ride as was already stated.
Certainly someone has an old magazine available...
But it wasn't stock...
If I had my Car and Driver magazine collection available I would quote you some numbers. The rating fell as the years went by...soft ride as was already stated.
Certainly someone has an old magazine available...
Last edited by No Go; Jan 12, 2007 at 03:44 PM.
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Race Director
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This site lists ZR-1 specs from '89 to '95.
The figures range from a low of 0.87 in 1990 to a high of 1.0 in 1994.
I seem to remember the base coupe in 1994 was .94.
I am totally guessing that my '94 Z07 car is somewhere near and below the ZR-1 because I have 17x9.5's on all four corners but stiffer springs than the ZR-1.
The figures range from a low of 0.87 in 1990 to a high of 1.0 in 1994.
I seem to remember the base coupe in 1994 was .94.
I am totally guessing that my '94 Z07 car is somewhere near and below the ZR-1 because I have 17x9.5's on all four corners but stiffer springs than the ZR-1.
Melting Slicks
Joined: Jun 2000
Posts: 3,215
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From: Tampa Florida
I probably added to the confusion by posting...
That 1.00 ZR1 is not stock, of course, coil over suspension, etc.
I think the low .90 area is consistent with a fresh C4...course you add some aged tires, tired bushings, K Mart alignment...
That 1.00 ZR1 is not stock, of course, coil over suspension, etc.
I think the low .90 area is consistent with a fresh C4...course you add some aged tires, tired bushings, K Mart alignment...
Le Mans Master
Joined: Jan 2002
Posts: 9,036
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From: Edmonton AB
From post #21 - Reasonable G-Force Goals?
I run through a pavement transition between 7-1/2 sec and 8-1/2 sec
that unsettles the car. But basically I'm at 1G (+/-) for 5 or so
seconds.
.
The following data is from the accelerometer and is for an '89 C4 on a
cold day with sad street rubber in a bumpy turn.
An instantaneous peak reading would report -1.34, but as the chart
shows, the average over 3 - 4 seconds is less impressive.
cold day with sad street rubber in a bumpy turn.
An instantaneous peak reading would report -1.34, but as the chart
shows, the average over 3 - 4 seconds is less impressive.
I run through a pavement transition between 7-1/2 sec and 8-1/2 sec
that unsettles the car. But basically I'm at 1G (+/-) for 5 or so
seconds.
.
Melting Slicks
Joined: Jul 2003
Posts: 2,140
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From: Cincinnati Ohio
thanks. it's ironic you have a mustang as your pic. i asked because i was curious if the c4's handle better than a 2000 mustang gt. a buddy of mine has the mustang and of course swears by it and thinks nothing is better about his ford (including handling) than my vette.
Had one (newer 'Stang) following me one day I75 north onto I275 west ramp... Really long left hander... I was at about 80mph in the inside lane of the curve... He was about 20 ft behind me. There is a good bump in the middle.I hit the bump and watched him in the rearveiw..... Poor guy ended up over on the outside shoulder
Never seen him again Live rear axles dont like bumps when loaded
Le Mans Master
Joined: Jan 2002
Posts: 9,036
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From: Edmonton AB
My log is from an event at an airbase. Closed circuit, WIDE runways
and lots of run-off room after the asphalt ends.
The spikes represent sizable changes in yaw and the arc the car was
forming got larger because of the lateral displacement.
Please, save this stuff for the track.
.
and lots of run-off room after the asphalt ends.
The spikes represent sizable changes in yaw and the arc the car was
forming got larger because of the lateral displacement.
Please, save this stuff for the track.
.
Thread Starter
Advanced
Joined: Dec 2006
Posts: 97
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From: PA
The ZR-1 will not do 1.3 G's, at least not on street tires. What is your source?
Lateral G ratings on these cars are deceiving, as very minor changes can increase it to 1.0G on the skidpad, yet the car can never sustain that in the real world where road imperfections will upset the ultra stiff suspension and throw you off the cliff.
Lateral G ratings on these cars are deceiving, as very minor changes can increase it to 1.0G on the skidpad, yet the car can never sustain that in the real world where road imperfections will upset the ultra stiff suspension and throw you off the cliff.
Team Owner
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From: SE NY
Cruise-In II Veteran
I'd still like to see some empirical data to substantiate the theory.
The latter is for you friend in his GT as he tries to follow you through the sweep...
