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Do I need to replace this leaf spring?

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Old Jun 7, 2023 | 09:35 AM
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Default Do I need to replace this leaf spring?

Is "flat" = bad?

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Old Jun 7, 2023 | 10:02 AM
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The spring is OK being flat across -- what's more important is how the suspension aligns the axle half-shafts. They should be horizontal when the car is sitting level from side to side. So, in this case they look good.

Looks like this car may need the spring hanger rubber bushings at the wheel ends changed out. If you are thinking the rear is sitting too low, new bushings will raise it a tad.
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Old Jun 7, 2023 | 10:04 AM
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My guess would be yes. Have you been able to drive it yet?
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Old Jun 7, 2023 | 10:06 AM
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Originally Posted by 67:72
The spring is OK being flat across -- what's more important is how the suspension aligns the axle half-shafts. They should be horizontal when the car is sitting level from side to side. So, in this case they look good.

Looks like this car may need the spring hanger rubber bushings at the wheel ends changed out. If you are thinking the rear is sitting too low, new bushings will raise it a tad.
ok great thanks.
The fellow did say there are a number of things to be done, bushings being one of them, so well said!
~R
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Old Jun 7, 2023 | 10:14 AM
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Originally Posted by kansas123
My guess would be yes. Have you been able to drive it yet?
I have not taken it on the road, no. Kind of reluctant to do so, as it's needing a rear bumper, and the engine does need some tuning.
However, the seller DID, shortly before he brought it up to me, and here's the video(was quite exciting for me to watch)

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Old Jun 7, 2023 | 10:25 AM
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What year is it? I would think the engine would sound even louder since some length of exhaust pipes rusted-off and mufflers are missing.
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Old Jun 7, 2023 | 10:28 AM
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Originally Posted by RetroGuy
I would think the engine would sound even louder since a good length of exhaust pipes rusted-off and mufflers are missing.
yes..she's a bit knarly sounding... hence the other thread about sidepipes.. in bad need to a exhaust solution!
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Old Jun 7, 2023 | 10:31 AM
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Hi, looks good alignment wise, as stated. Here's a pic of our '68 after complete rebuilding of suspension parts. Alignment is similar. And congrats!!!! Paul



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Old Jun 7, 2023 | 11:13 AM
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Originally Posted by RetroGuy
What year is it? I would think the engine would sound even louder since some length of exhaust pipes rusted-off and mufflers are missing.
It is a 1974 L48 Base
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Old Jun 7, 2023 | 12:06 PM
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Also, you might check the rear ride height against specs. If it's low, that would indicate spring problems.

Last edited by Jud Chapin; Jun 7, 2023 at 12:35 PM.
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Old Jun 7, 2023 | 01:57 PM
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Originally Posted by rgouette
ok great thanks.
The fellow did say there are a number of things to be done, bushings being one of them, so well said!
~R
rgouette -- while you are under there replacing the bushings, remove these non-factory angle brackets.

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Old Jun 7, 2023 | 02:01 PM
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Those brackets look like pieces to an old school traction bar. I agree, get rid of them. Before you start, thoroughly soak the bolts in Kroil or Bead Blaster for a few days. Go slowly, you don't want to snap off the differential ears. Jerry
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Old Jun 7, 2023 | 02:52 PM
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i would attach a tow hook to them.....you will need a way to get it on the flat bed eventually
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Old Jun 7, 2023 | 06:44 PM
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Originally Posted by '73and'75
rgouette -- while you are under there replacing the bushings, remove these non-factory angle brackets.
If you do remove the brackets, make sure you get shorter bolts. Otherwise the front ones will crack the housing.
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Old Jun 8, 2023 | 03:10 PM
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Originally Posted by 67:72
The spring is OK being flat across -- what's more important is how the suspension aligns the axle half-shafts. They should be horizontal when the car is sitting level from side to side. So, in this case they look good.

Looks like this car may need the spring hanger rubber bushings at the wheel ends changed out. If you are thinking the rear is sitting too low, new bushings will raise it a tad.
Remove the left and right spring bolts first.
When reinstalling the differential center bolts, you must get all 4 bolts finger tight then go 1/2 turn on each one until correctly torqued or you can snap off the differential cover.
Then replace the outer bolts and new cushions.

https://www.topflightautomotive.com/...lt-kit-rubber/

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Old Jun 8, 2023 | 04:44 PM
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Originally Posted by '73and'75
rgouette -- while you are under there replacing the bushings, remove these non-factory angle brackets.
Looks like a trailer hitch bracket = what do I know ?
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Old Jun 8, 2023 | 07:26 PM
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Originally Posted by 1971corvette
Looks like a trailer hitch bracket = what do I know ?
Im pretty sure trailer hitches on a Corvette, is right behind adultery in the list of sins ….
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Old Jun 8, 2023 | 10:23 PM
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Originally Posted by rgouette
Im pretty sure trailer hitches on a Corvette, is right behind adultery in the list of sins ….
Ahhh... My father used to have a 63 Split aound 65-67 with 4:11 cogs. It was a 300hp, I believe He traded it for a Chevy truck and 2 Harley Sportsters. How's that equate today?

Wish I had a pic of it. I do have a pic on one of the Harleys at around 16-18 mos. Don't know if there's a hand supporting me? Hope so, lol



He used to trailer his racecar to the track with it, a 57 Chebby with a 409.

A lot of his friends back then did the same... Lots of sins going on in the 60's 😂
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Old Jun 9, 2023 | 04:20 PM
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While that lower spring bracket is not "stock", it doesn't appear to have any functional problem....nor does the spring. If the spring is "squeaky" when driving or if you hear other "noises" from it, the separator sheets may be shot and some lube might help.
No real reason to swap to a mono-spring, unless you feel the urge.
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