CPP Rear Shock Crossmember thoughts? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

LagunaGlide · 12-28-2021, 08:27 PM

I am putting together some parts to do a 3.5/5 static drop and was looking at options to change the shock location / angle. For $130 the CPP 6372RTSC doesn't look too bad. Anyone have experience using this part?

https://www.summitracing.com/parts/c...ckup/year/1970

**HO455** · 12-29-2021, 05:47 PM

First off I have no experience with that part. So this is merely my opinion.
According to the question on Summit's site it doesn't give you any increase in shock length. If that is true I would replace the stock mounts with some easy DIY mounts and put that $130 into the shock budget.
Here is a link to how I did mine. Starting on post 517.

https://67-72chevytrucks.com/vboard/...698377&page=21

**Jason Banks** · 12-29-2021, 06:02 PM

The CPP shock relocation kit will change the shock location/angle. Which is what you mention:
https://www.summitracing.com/parts/clp-6372srk
This is what I used on stock crossmember.

It appears the crossmember might be only window dressing. I can't find anything saying what it might change or improve.

LagunaGlide · 12-29-2021, 08:36 PM

Quote:

Originally Posted by HO455

First off I have no experience with that part. So this is merely my opinion.
According to the question on Summit's site it doesn't give you any increase in shock length. If that is true I would replace the stock mounts with some easy DIY mounts and put that $130 into the shock budget.
Here is a link to how I did mine. Starting on post 517.

https://67-72chevytrucks.com/vboard/...698377&page=21

Good call. I keep seeing these shock relocation brackets, and they look pretty basic, so I was looking for another route. Looking at your thread, and the OG thread I think I will make my own.

Quote:

Originally Posted by Jason Banks

The CPP shock relocation kit will change the shock location/angle. Which is what you mention:
https://www.summitracing.com/parts/clp-6372srk
This is what I used on stock crossmember.

It appears the crossmember might be only window dressing. I can't find anything saying what it might change or improve.

Thanks for the reply. Those are the relocation kits I keep seeing as well. Looks like I'll be making my own.

SCOTI · 12-29-2021, 11:46 PM

Double Post Edited. Could not delete.

SCOTI · 12-29-2021, 11:51 PM

CPP's set-up is great if you're missing the shock x-member or if it has structural issues. If there's nothing wrong w/the x-member, I would go home-made if possible or do No Limits rear shock relocation.

If you can do your own fab work, this would be a good way to go....
https://67-72chevytrucks.com/vboard/...d.php?t=451200

https://nolimit.net/store/Dropped-Sh...unts-p26244502

**MikeB** · 01-05-2022, 04:13 PM

Many years ago I used brackets similar to those below on my 69 C10. They were made by Early Classic Enterprises. Those guys were the best, but they are no longer around.

The whole idea was to mount the shocks more upright after installing 3" dropped springs. I don't recall if the shocks are shorter than stock, but I do remember the rear end bounced around less.

https://www.speedwaymotors.com/1963-...it,46363.html?

If needed, shorter shocks like these are available:
https://www.classicparts.com/1960-72...ctinfo/74-618/

SCOTI · 01-05-2022, 04:31 PM

Quote:

Originally Posted by MikeB

Many years ago I used brackets similar to those below on my 69 C10. They were made by Early Classic Enterprises. Those guys were the best, but they are no longer around.

The whole idea was to mount the shocks more upright after installing 3" dropped springs. I don't recall if the shocks are shorter than stock, but I do remember the rear end bounced around less.

If needed, shorter shocks like these are available...

You can re-work the stock brackets to do the same thing for those on a budget:

http://67-72chevytrucks.com/vboard/s...shock+brackets

jimijam00 · 01-05-2022, 05:16 PM

My no limit relocation mounts work great. Much beafier than the eBay junk.

No Limits

SCOTI · 01-07-2022, 10:28 AM

Quote:

Originally Posted by jimijam00

My no limit relocation mounts work great. Much beafier than the eBay junk.

No Limits

The same link was already provided in the thread.

**MikeB** · 01-07-2022, 10:51 AM

Quote:

Originally Posted by SCOTI

The same link was already provided in the thread.

No Harm, no foul. Sometimes guys (including me) don't read every response, just the initial question.

Or maybe jimijam00 was simply agreeing with your recommendation.

SCOTI · 01-07-2022, 01:39 PM

Quote:

Originally Posted by MikeB

No Harm, no foul. Sometimes guys (including me) don't read every response, just the initial question.

Or maybe jimijam00 was simply agreeing with your recommendation.

True, No harm or foul.

I read the responses when possible (first initial page/pages of thread) so I don't repost info already suggested. I get it though when the thread is 40 pages....

gt40racing · 01-07-2022, 02:34 PM

I installed crossmember with CPP rear coilover kit and CPP's tubular rear end kit. Zero issues with fitment. Also used CPP track bar kit that provided proper spacing for my aluminum rear end cover. I am building just a basic street truck a 5.3 and 4L60E. Boils down to your budget and what your trying to accomplish.

jimijam00 · 01-07-2022, 03:10 PM

Quote:

Originally Posted by SCOTI

The same link was already provided in the thread.

Sorry that bothers you. Would you like me to delete the link or the entire post?

LagunaGlide · 01-07-2022, 05:55 PM

Thanks for the replies. I haven't done anything yet, but I will either be making new shock brackets from 2in tubing, or I will modify the stock mounts.

LagunaGlide · 01-27-2022, 06:08 PM

Quote:

Originally Posted by SCOTI

You can re-work the stock brackets to do the same thing for those on a budget:

http://67-72chevytrucks.com/vboard/s...shock+brackets

I wanted to ask a question, but wasn't sure if I should revive that old thread.

Is the only benefit of flipping and flattening the stock brackets to increase shock travel length? I was doing some fitting and testing today after I cut and shaped the new brackets, and it looks like flipping that bracket will make that the lowest point of the rear end.

SCOTI · 01-27-2022, 06:48 PM

Quote:

Originally Posted by LagunaGlide

I wanted to ask a question, but wasn't sure if I should revive that old thread.

Is the only benefit of flipping and flattening the stock brackets to increase shock travel length? I was doing some fitting and testing today after I cut and shaped the new brackets, and it looks like flipping that bracket will make that the lowest point of the rear end.

Yes, flipping the brackets allows more shock travel since they're now .750" below the bottom of the T/A vs. .750" above. They do fall below the scrub-line on the T/A but I don't recall them being lower than say the brake drum.

On lowered T/A apps (using lowering blocks), if over 1.5" blocks are used, the U-bolt ends are usually the lowest point & are below the scrub-line

LagunaGlide · 01-27-2022, 09:32 PM

Quote:

Originally Posted by SCOTI

Yes, flipping the brackets allows more shock travel since they're now .750" below the bottom of the T/A vs. .750" above. They do fall below the scrub-line on the T/A but I don't recall them being lower than say the brake drum.

On lowered T/A apps (using lowering blocks), if over 1.5" blocks are used, the U-bolt ends are usually the lowest point & are below the scrub-line

Makes sense to me. Thanks for the reply.

12-28-2021, 08:27 PM	#1
LagunaGlide Registered User Join Date: Aug 2019 Location: Harrisburg, Pennsylvania Posts: 66	CPP Rear Shock Crossmember thoughts? I am putting together some parts to do a 3.5/5 static drop and was looking at options to change the shock location / angle. For $130 the CPP 6372RTSC doesn't look too bad. Anyone have experience using this part? https://www.summitracing.com/parts/c...ckup/year/1970

12-29-2021, 05:47 PM	#2
HO455 Post Whore Join Date: Feb 2016 Location: Portland Oregon Posts: 10,791	Re: CPP Rear Shock Crossmember thoughts? First off I have no experience with that part. So this is merely my opinion. According to the question on Summit's site it doesn't give you any increase in shock length. If that is true I would replace the stock mounts with some easy DIY mounts and put that $130 into the shock budget. Here is a link to how I did mine. Starting on post 517. https://67-72chevytrucks.com/vboard/...698377&page=21 __________________ Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help. RIP Bob Parks. 1967 Burban the WMB,1991 S(stink)-10 Blazer,1969 GTO, 1970 Javelin, 1952 F2 Ford 4X4, 29 Model A, 72 Firebird. 85 Alfa Romeo If it breaks I didn't want it in the first place The WMB repair thread http://67-72chevytrucks.com/vboard/s...d.php?t=698377

12-29-2021, 06:02 PM	#3
Jason Banks Senior Member Join Date: Dec 1999 Location: TX Posts: 1,514	Re: CPP Rear Shock Crossmember thoughts? The CPP shock relocation kit will change the shock location/angle. Which is what you mention: https://www.summitracing.com/parts/clp-6372srk This is what I used on stock crossmember. It appears the crossmember might be only window dressing. I can't find anything saying what it might change or improve.

12-29-2021, 11:46 PM	#5
SCOTI Registered User Join Date: Apr 2001 Location: DALLAS,TX Posts: 21,907	Re: CPP Rear Shock Crossmember thoughts? Double Post Edited. Could not delete. __________________ 67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... *Cubic inches is like Indiana Jones with a cheap pistol.* Last edited by SCOTI; 01-05-2022 at 04:30 PM. Reason: double post

12-29-2021, 11:51 PM	#6
SCOTI Registered User Join Date: Apr 2001 Location: DALLAS,TX Posts: 21,907	Re: CPP Rear Shock Crossmember thoughts? CPP's set-up is great if you're missing the shock x-member or if it has structural issues. If there's nothing wrong w/the x-member, I would go home-made if possible or do No Limits rear shock relocation. If you can do your own fab work, this would be a good way to go.... https://67-72chevytrucks.com/vboard/...d.php?t=451200 https://nolimit.net/store/Dropped-Sh...unts-p26244502 __________________ 67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... *Cubic inches is like Indiana Jones with a cheap pistol.*

01-05-2022, 04:13 PM	#7
MikeB Senior Member Join Date: Jul 2000 Location: North Texas Posts: 3,411	Re: CPP Rear Shock Crossmember thoughts? Many years ago I used brackets similar to those below on my 69 C10. They were made by Early Classic Enterprises. Those guys were the best, but they are no longer around. The whole idea was to mount the shocks more upright after installing 3" dropped springs. I don't recall if the shocks are shorter than stock, but I do remember the rear end bounced around less. https://www.speedwaymotors.com/1963-...it,46363.html? If needed, shorter shocks like these are available: https://www.classicparts.com/1960-72...ctinfo/74-618/ __________________ Mike 1969 C10 LWB -- owned for 34 years. 350/TH350, 3.08 posi, 1st Gen Vintage Air, AAW wiring harness, 5-lug conversion, 1985 spindles and brakes. 1982 C10 SWB -- sold 1981 C10 Silverado LWB -- sold, but wish I still had it! 1969 C10 (not the current one) that I bought in the early 1980s. Paid $1200; sold for $1500 a few years later. Just a hint at the appreciation that was coming. Retired as a factory automation products salesman. Worked part-time over the years for an engine builder and a classic car repair shop. Member here for 23 years! This is the very first car/truck Internet forum I joined. I still used a dial-up modem back then!

01-05-2022, 05:16 PM	#9
jimijam00 Registered User Join Date: Apr 2009 Location: PNW Posts: 553	Re: CPP Rear Shock Crossmember thoughts? My no limit relocation mounts work great. Much beafier than the eBay junk. No Limits

01-07-2022, 02:34 PM	#13
gt40racing Registered User Join Date: Dec 2012 Location: Lompoc CA Posts: 118	Re: CPP Rear Shock Crossmember thoughts? I installed crossmember with CPP rear coilover kit and CPP's tubular rear end kit. Zero issues with fitment. Also used CPP track bar kit that provided proper spacing for my aluminum rear end cover. I am building just a basic street truck a 5.3 and 4L60E. Boils down to your budget and what your trying to accomplish. __________________ 1989 5.0 LX Coupe 1989 Saleen #243 1969 C-10 Fleetside 1966 Mustang Coupe GT 1965 Fastback Mustang 1951 F1 Truck

01-07-2022, 05:55 PM	#15
LagunaGlide Registered User Join Date: Aug 2019 Location: Harrisburg, Pennsylvania Posts: 66	Re: CPP Rear Shock Crossmember thoughts? Thanks for the replies. I haven't done anything yet, but I will either be making new shock brackets from 2in tubing, or I will modify the stock mounts.



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