510 rear shock length?

KC30 · **Posted:** Sun May 08, 2011 6:32 pm

Hi everyone. I'm looking for rear shock replacement for my '70 Laurel. I'm hoping the 510 rears are the same (or very close) to the length. I took mine off and measured, it's 23" from the center of the bottom mount hole to the top mount point (not the threads past). Could someone please tell me what the stock rear 510 shock length is? If very close, I plan to get the Ground Control rear coil overs.

kev · **Posted:** Sun May 08, 2011 6:36 pm

Is the Laurel rear shock an eye at the top, and a pin at the bottom (like a C10/C110?)

KC30 · **Posted:** Sun May 08, 2011 6:58 pm

It's like the 510's. An eye on the bottom and pin on the top. I found finally found some specs for a stock replacement shock from Monroe. It lists 21.5" length for the non-wagon, which is promising.

Now I have to figure out the coil over spring weight... I have no idea on that.

bonvo · **Posted:** Sun May 08, 2011 7:58 pm

is it lowered? if so there are other options then 510 shocks

KC30 · **Posted:** Sun May 08, 2011 8:43 pm

The rear's not lowered, currently on stock shocks. The ride height is perfect for the rear, except with basic shocks, it's way too soft. The car was designed for tires that tuck into the wheel well. But now that I'm getting the rear to match the front (tires out to the fender line), the rear is too soft and scrubbing under certain cornering/acceleration/bumps. Plus I have S13 coilovers in the front, and the soft rear doesn't match one bit. So I'm looking for a coilover with a shock that is the stock length.

stev · **Posted:** Thu May 12, 2011 9:01 am

hey KC30,
the shocks from my c30 are the same as the 510 ones
partno.:56210-78525

KC30 · **Posted:** Thu May 12, 2011 11:27 pm

Thanks for the info! That's what I was hoping. The coilovers just got shipped today, so I hope they work out.

KC30 · **Posted:** Tue May 17, 2011 11:53 pm

This is a follow up in case anyone's interested in knowing the length of the Ground Control PL510 (not wagon) rear coilovers. I say this as I had previously contacted Ground Control by email asking what the unsprung length was so I could figure out if I would be able to use them in my application... I never received a response.
Here's a reference pic of the coilovers:

The length is 21 3/4" from the center of the bottom mount hole to the top mount point (bushing). Though I'll have to see when fitting, but it seems like this is going to be a tight tolerance to fit for what I need. Since it appears to be slightly shorter than the stock ones and I'm not sure how it'll sit yet. But if need be, the top stud has enough length that I can add some shims to get some more height to the coilover's unsprung length.

510 rear shock length?

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