66 impala sedan front and rear suspension upgrade - Impala Tech
Brakes & Suspension Conversion Questions & more

 
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post #1 of 14 (permalink) Old 05-05-2017, 01:04 PM Thread Starter
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66 impala sedan front and rear suspension upgrade

Can anyone recommend a good replacement bushing kit for front and rear suspension?
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post #2 of 14 (permalink) Old 05-06-2017, 08:10 PM
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Napa.

http://www.impalas.net/forums/image.php?type=sigpic&userid=521&dateline=14693626  69
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post #3 of 14 (permalink) Old 05-06-2017, 08:32 PM
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This company used to use made in USA Moog parts last time I bought a kit from them.

Polygraphite Performance Super Front End Kit

I use RED Energy Suspension for bushings because I want them to stand out as having been upgraded from old rotten stock rubber, but they also sell black bushings that could pass for stock.

Chevrolet Impala Suspension Bushings Replacement Kit

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post #4 of 14 (permalink) Old 05-07-2017, 11:33 AM Thread Starter
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Thanks everyone. Just wondering not near my car now. Would i have to go look and see if its single control arm or 2 and also the rear track bar bushing what type and front options? Jw
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post #5 of 14 (permalink) Old 05-07-2017, 12:39 PM
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Chrysler introduced the 300 in 1955 with the first Hemi engine (331 cubic inch displacement, not the 426 later version) where the 300 stood for the brake horsepower. This was a magic number that launched the concept of a factory made muscle car.

GM used this 300 horsepower as the dividing line between a base engine and a high performance engine. If your car was shipped from the factory with an engine that made 300 horsepower or more then it got a heavy duty power train to support that added power. In a full size coil spring car this equates to dual upper control arms.

Since the most powerful 283 only made 283 horsepower with a solid tappet cam and mechanical fuel injection it didn't make the cut. This limits you to the 327 (introduced in 1962) or larger engine as having dual upper control arms with the 1963 mechanical fuel injected, solid lifter, high compression engine was factory rated at 375 horsepower in the Corvette. Most likey you would never find that installed in a full size Chevy though it was on the engine option list. To hit 300 horse in a big car you put in the bigger 348 or 409 (or later BBC engines from the 325 horse 396 to the 390 horse 427).

Panhard bars in these full size cars are non-adjustable so if the car is lowered (most cars from the mid sixties to early seventies are already lowered two inches due to spring sag) the rear end is pushed closer to one side of the car than the other. This means if you use a wider than stock wheel and tire combination, you risk shaving the side wall of the tire on the fender lip.

If you buy an adjustable Panhard bar it will come with polyurethane bushings already installed.

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post #6 of 14 (permalink) Old 05-07-2017, 01:39 PM Thread Starter
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How long would you think it would take to replace all the bushings up front and rear while doing a front disc conversion and rear drum upgrade price wise just wondering
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post #7 of 14 (permalink) Old 05-07-2017, 02:03 PM
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Chilton's Flat Rate has the following times for a professionally trained mechanic with a full equipped shop that has a lift, fifty ton hydraulic press, and compressed air and couple (I had three large chests of drawers) of roll around tool chests full of hand tools.

R&R ball joints: 1.8 hours
R&R Bushings Upper and Lower 5.7 hours
R&R Sway Bar 0.4 hours
R&R Shock absorbers 0.4 hours
R&R steering linkage 4.9 hours

for a total of 12.8 hours (this includes changing the springs which is labor free as you have the control arms off to change the bushings). I could probably do it in under ten hours if I cut a few corners, but I had a lot of experience doing this in Camaros, Novas and other pony cars who shall remain nameless.

Your time may vary.

You will also need a Harbor Freight twenty ton press (fits up against the wall as it is very narrow so watch that it doesn't fall over with some things you put in the press such as drive shaft).

https://www.harborfreight.com/20-ton...ess-60603.html

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post #8 of 14 (permalink) Old 05-07-2017, 02:34 PM Thread Starter
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As far as my engine it is 327 im not sure if its factory. Has 2 speed powerglide that guy put in it.
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post #9 of 14 (permalink) Old 05-07-2017, 02:56 PM Thread Starter
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Pic of rear that i have
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post #10 of 14 (permalink) Old 05-07-2017, 03:16 PM
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That is a Spicer ten bolt (8.2 inch diameter ring gear) that will have only one upper control arm. The dual upper control arms were used with a Spicer 12 bolt (8.875 inch ring gear), which was the heavy duty part used with a high horse motor.

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post #11 of 14 (permalink) Old 05-07-2017, 03:21 PM Thread Starter
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Thanks big dave
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post #12 of 14 (permalink) Old 05-07-2017, 03:33 PM Thread Starter
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Same on front too?
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post #13 of 14 (permalink) Old 05-07-2017, 04:02 PM Thread Starter
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Front
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post #14 of 14 (permalink) Old 05-07-2017, 05:38 PM
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Quote:
Originally Posted by Matthewc51 View Post
Same on front too?
All front ends are the same as there was no HD suspension that was included with a higher performance engine.

There was a heavier duty suspension package available (RPO F40) that was used on the Police and station wagon which is why these two cars are excluded in parts catalogs ("except police, station wagon" appear beside just about every front end part in a Moog catalog).

Unlike the 1966 SS Chevelle which had it's own heavy duty suspension (RPO F41), 12 bolt rear end, and a choice in several high performance engines coupled with a heavy duty transmission when you ordered a SS package. In 1966 an SS Impala bought you bucket seats (with a combined weight that exceeded the weight of a bench seat), and another twenty to thirty pounds of useless chrome trim and badges. You didn't get anything with the SS package to improve performance or handling, strictly a trim package (though it has it's own body style number that is encoded in the VIN tag).

As far as disc brakes goes the factory offered two separate disc brake options. 1967-'68 had four piston fixed bridge Corvette brakes; with 1969 and '70 having a special (big car only) single piston floating caliper that was super sized (bigger than the Chevelle, and Camaro versions) to reflect the heavier car having heavier duty parts. Both options required 15 inch wheels so if you are emotionally attached to your 14 inch full wheel covers that isn't going to work unless you can find some rare Camaro disc brake wheels from a 1969 Camaro.

Big brake aftermarket kits are going to want a 17 inch wheel to clear a 13 inch rotor and fixed bridge caliper.

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