Front end feels like a tank after front end installation
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Car: 87 Pontiac Trans Am
Engine: Lapouttre Racing 350
Transmission: Rebuilt 700r4 Mild shift kit
Axle/Gears: 10 bolt 3.23 posi w/disc brakes
Front end feels like a tank after front end installation
The only thing thats different on the front end is the founders performance cc plates. I have brand new moog 5662 installed as well.I realize that they may have droped the car a few inches from the stock plates but the front end has no bounce at all. Very stff. Is this normal? Did I screw up putting these plates on?
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Re: Front end feels like a tank after front end installation
Nope, sounds about right.
You'll LOVE it when you drive it.
You'll LOVE it when you drive it.
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Car: 87 Pontiac Trans Am
Engine: Lapouttre Racing 350
Transmission: Rebuilt 700r4 Mild shift kit
Axle/Gears: 10 bolt 3.23 posi w/disc brakes
Re: Front end feels like a tank after front end installation
Thats just it I wont be driving it for another two years probably. Guess I just worry to much,It just seems weird that after pulling the motor out the front end sat up so high(first pic) and now that I put the plates in and redone the suspension the car sits low even with no motor(second pic) Whats going to happen when I drop all the weight from the motor in it? Is it going to sit even lower? The rear end feels real spongy and the front is stiff as hell. I sure dont want the car to look jacked up in the back...Sorry but this is my first car rebuild and I am learning as I go. I just want it to be right.
Last edited by Sidethumper; 12-01-2012 at 05:51 PM.
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Re: Front end feels like a tank after front end installation
It will sit lower than it does now, but won't drop NEARLY as much as it would have with the OE springs.
That's what "spring rate" is all about... how many lbs does it take to compress the spring an inch. The 5662s have AT LEAST TWICE the rate of what you took out used to have WHEN NEW; could be 3 TIMES the rate that they had at the end of their tired life. Meaning, for any given change of weight, the height will change between half and a third as much as it used to.
The first time you drive it, you won't even get all the way around the block before you decide the rears HAVE GOT TO get replaced too. Don't even bother worrying about what those wore-out POSs are doing, they won't survive a week of driving before you throw em in the trash.
That's what "spring rate" is all about... how many lbs does it take to compress the spring an inch. The 5662s have AT LEAST TWICE the rate of what you took out used to have WHEN NEW; could be 3 TIMES the rate that they had at the end of their tired life. Meaning, for any given change of weight, the height will change between half and a third as much as it used to.
The first time you drive it, you won't even get all the way around the block before you decide the rears HAVE GOT TO get replaced too. Don't even bother worrying about what those wore-out POSs are doing, they won't survive a week of driving before you throw em in the trash.
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Car: 87 Pontiac Trans Am
Engine: Lapouttre Racing 350
Transmission: Rebuilt 700r4 Mild shift kit
Axle/Gears: 10 bolt 3.23 posi w/disc brakes
Re: Front end feels like a tank after front end installation
It will sit lower than it does now, but won't drop NEARLY as much as it would have with the OE springs.
That's what "spring rate" is all about... how many lbs does it take to compress the spring an inch. The 5662s have AT LEAST TWICE the rate of what you took out used to have WHEN NEW; could be 3 TIMES the rate that they had at the end of their tired life. Meaning, for any given change of weight, the height will change between half and a third as much as it used to.
The first time you drive it, you won't even get all the way around the block before you decide the rears HAVE GOT TO get replaced too. Don't even bother worrying about what those wore-out POSs are doing, they won't survive a week of driving before you throw em in the trash.
That's what "spring rate" is all about... how many lbs does it take to compress the spring an inch. The 5662s have AT LEAST TWICE the rate of what you took out used to have WHEN NEW; could be 3 TIMES the rate that they had at the end of their tired life. Meaning, for any given change of weight, the height will change between half and a third as much as it used to.
The first time you drive it, you won't even get all the way around the block before you decide the rears HAVE GOT TO get replaced too. Don't even bother worrying about what those wore-out POSs are doing, they won't survive a week of driving before you throw em in the trash.
Last edited by Sidethumper; 12-01-2012 at 08:11 PM.
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Re: Front end feels like a tank after front end installation
5665 are for the rear......5664 are front springs (similar to the 5662)
I gotta say, the 5662/5665 combo are a pretty good value for how they feel in the car.
I gotta say, the 5662/5665 combo are a pretty good value for how they feel in the car.
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Axle/Gears: 10 bolt 3.23 posi w/disc brakes
Re: Front end feels like a tank after front end installation
Sorry for the error. I believe 5665 is what I meant to say. So I suppose I am just not used to the way this setup feels in comparison to the stock setup I had.
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