trailing arm question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

BirchRidge · 10-14-2010, 10:32 AM

Hi ..
I was wondering if anyone here has ever tried to make a "kick up" on an stock trailing arm instead of lowering with blocks?
does it work or is it completely unreasonable??

**N2TRUX** · 10-14-2010, 11:09 AM

Welcome to the forum BirchRidge. Are you talking about cutting a stock T/A and raising it up to create a drop? Seems like the torsional fatigue would be a concern.

BirchRidge · 10-14-2010, 12:50 PM

okay .. any other tips on how I can lower the rear without drop coils,
they are very expensive in sweden when the dealers put on high prices ..
I may be a greedy dumb ass swede but if you don´t ask, you get no answer

*Shane* · 10-14-2010, 01:01 PM

leave the Swedish dealer out of the picture and order directly from one of our board vendors ...

SCOTI · 10-14-2010, 02:28 PM

What is the exact issue w/lowering it using blocks & drop springs?

BirchRidge · 10-14-2010, 05:52 PM

there is no problem with using drop springs & blocks more than it costs me half month's payment to buy drop springs over here, how many inch can I lower by using just blocks?

*Shane* · 10-14-2010, 06:31 PM

again, why can't you buy them HERE and have them shipped there?

wouldn't that save you some money?

SCOTI · 10-14-2010, 06:37 PM

Quote:

Originally Posted by BirchRidge

there is no problem with using drop springs & blocks more than it costs me half month's payment to buy drop springs over here, how many inch can I lower by using just blocks?

With a 15" wheel diameter, you can run up to 1.5" lowering blocks w/o scrub-line issues. With 17" wheel diameters, you can go to 2" blocks w/o issues; 18+" wheels you could go 3" blocks but the truck arms will become very visible.

Try these......

http://porterbuiltstreetrods.com/sit...ling-arms-499/

BirchRidge · 10-15-2010, 09:53 AM

Shane, who should I contact for prices and info on a lowering kit over there?

raycow · 10-15-2010, 02:38 PM

BirchRidge, don't you have companies that make springs locally? This would have to be much cheaper than importing them from the US.

Ray

BirchRidge · 10-15-2010, 03:38 PM

Hey Ray, I think there is only one spring manufacturer in sweden and they are not cheap, and produces only springs to modern sports cars. a set of springs for my pickup costs about 10000 sek here which is about $ 1500.

*Shane* · 10-15-2010, 03:43 PM

Quote:

Originally Posted by BirchRidge

Shane, who should I contact for prices and info on a lowering kit over there?

i would contact Early Classic ... top rate products with the customer service to match.

*RUSHNBOBO* · 10-15-2010, 04:20 PM

Quote:

Originally Posted by SCOTI

With a 15" wheel diameter, you can run up to 1.5" lowering blocks w/o scrub-line issues. With 17" wheel diameters, you can go to 2" blocks w/o issues; 18+" wheels you could go 3" blocks but the truck arms will become very visible.

Try these......

http://porterbuiltstreetrods.com/sit...ling-arms-499/

Scotti when u you mean scrub line issues i assume your talking about the trailing arm now sitting lower due to the blocks, and the arm possibly rubbing on the ground.

My question is what in the world does wheel diameter have to due with it. Don't u mean overall tire diameter?

Example; I run 16 inch rims w/ 235/85 tires ....31.7 inches in diameter!!!!

Most 18 inch wheels w/low profile tires (35-40 series) are now where near that
tall ....It all has to do with aspect ratio of the tire. Even a 70 series 15 inch wheel tire would be close if not taller than lets say a 40 series 18 inch wheel

.................................Rushnbobo>>>>>>>>>>>>>>>>>>>>>

SCOTI · 10-15-2010, 05:33 PM

Quote:

Originally Posted by RUSHNBOBO

Scotti when u you mean scrub line issues i assume your talking about the trailing arm now sitting lower due to the blocks, and the arm possibly rubbing on the ground.

My question is what in the world does wheel diameter have to due with it. Don't u mean overall tire diameter?

Example; I run 16 inch rims w/ 235/85 tires ....31.7 inches in diameter!!!!

Most 18 inch wheels w/low profile tires (35-40 series) are now where near that
tall ....It all has to do with aspect ratio of the tire. Even a 70 series 15 inch wheel tire would be close if not taller than lets say a 40 series 18 inch wheel

.................................Rushnbobo>>>>>>>>>>>>>>>>>>>>>

Wheels are solid material so the OD of the wheel does not change in the event of a flat. A 29" tall tire on the other hand can go flat winding up much shorter thus making that wheel diameter the one thing that keeps you above the scrub-line.

*RUSHNBOBO* · 10-15-2010, 05:43 PM

Quote:

Originally Posted by SCOTI

Wheels are solid material so the OD of the wheel does not change in the event of a flat. A 29" tall tire on the other hand can go flat winding up much shorter thus making that wheel diameter the one thing that keeps you above the scrub-line.

Got it Scoti ....wasn't taking in the account of the flat tire scenario ........

"if it aint broken ....break it ....then you have an excuse to mess with it"

...........................Rushnbbobo...........................

fixit-p · 10-15-2010, 06:34 PM

Quote:

Originally Posted by BirchRidge

Hi ..
I was wondering if anyone here has ever tried to make a "kick up" on an stock trailing arm instead of lowering with blocks?
does it work or is it completely unreasonable??

I made a set, I haven't been able to install them yet but it is doable.

oldblue1968chevy · 10-15-2010, 06:46 PM

^Holy cow!

You guys have jeeps over there? Slap a set of TJ springs on it! 5" Rear drop 0 load capacity though.

SCOTI · 10-15-2010, 06:52 PM

Quote:

Originally Posted by fixit-p

I made a set, I haven't been able to install them yet but it is doable.

Those are still awesome in my book...... even if they haven't seen real use yet.

oldblue1968chevy · 10-15-2010, 11:03 PM

wow, really awesome

fabnsmitty · 10-28-2010, 03:55 PM

nice work on the arms, do you have any pics of the front of em?

*stich626* · 10-28-2010, 04:12 PM

Quote:

Originally Posted by BirchRidge

Hi ..
I was wondering if anyone here has ever tried to make a "kick up" on an stock trailing arm instead of lowering with blocks?
does it work or is it completely unreasonable??

here ya go, cheap and easy, not my post but I found it while looking for a cheap 2" drop

http://67-72chevytrucks.com/vboard/s...d.php?t=196457

10-14-2010, 10:32 AM	#1
BirchRidge Registered User Join Date: Oct 2010 Location: Grängesberg Sweden Posts: 5	trailing arm question Hi .. I was wondering if anyone here has ever tried to make a "kick up" on an stock trailing arm instead of lowering with blocks? does it work or is it completely unreasonable??

10-14-2010, 11:09 AM	#2
N2TRUX Happy to be here Join Date: Mar 2000 Location: Cypress, TX Posts: 39,021	Re: trailing arm question Welcome to the forum BirchRidge. Are you talking about cutting a stock T/A and raising it up to create a drop? Seems like the torsional fatigue would be a concern. __________________ Follow me on Facebook and Instagram @N2trux.com Articles- "Jake" the 84 to 74 crewcab "Elwood" the77_Remix 85 GMC Sierra "Scarlett" "Refining Sierra"

10-14-2010, 12:50 PM	#3
BirchRidge Registered User Join Date: Oct 2010 Location: Grängesberg Sweden Posts: 5	Re: trailing arm question okay .. any other tips on how I can lower the rear without drop coils, they are very expensive in sweden when the dealers put on high prices .. I may be a greedy dumb ass swede but if you don´t ask, you get no answer

10-14-2010, 01:01 PM	#4
Shane Account Suspended Join Date: Jun 2000 Location: over yonder Posts: 14,270	Re: trailing arm question leave the Swedish dealer out of the picture and order directly from one of our board vendors ...

10-14-2010, 02:28 PM	#5
SCOTI Registered User Join Date: Apr 2001 Location: DALLAS,TX Posts: 22,064	Re: trailing arm question What is the exact issue w/lowering it using blocks & drop springs? __________________ 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.*

10-14-2010, 05:52 PM	#6
BirchRidge Registered User Join Date: Oct 2010 Location: Grängesberg Sweden Posts: 5	Re: trailing arm question there is no problem with using drop springs & blocks more than it costs me half month's payment to buy drop springs over here, how many inch can I lower by using just blocks?

10-14-2010, 06:31 PM	#7
Shane Account Suspended Join Date: Jun 2000 Location: over yonder Posts: 14,270	Re: trailing arm question again, why can't you buy them HERE and have them shipped there? wouldn't that save you some money? Last edited by Shane; 10-14-2010 at 07:07 PM.

10-15-2010, 09:53 AM	#9
BirchRidge Registered User Join Date: Oct 2010 Location: Grängesberg Sweden Posts: 5	Re: trailing arm question Shane, who should I contact for prices and info on a lowering kit over there?

10-15-2010, 02:38 PM	#10
raycow Registered User Join Date: Mar 2003 Location: San Francisco, CA USA Posts: 2,454	Re: trailing arm question BirchRidge, don't you have companies that make springs locally? This would have to be much cheaper than importing them from the US. Ray

10-15-2010, 03:38 PM	#11
BirchRidge Registered User Join Date: Oct 2010 Location: Grängesberg Sweden Posts: 5	Re: trailing arm question Hey Ray, I think there is only one spring manufacturer in sweden and they are not cheap, and produces only springs to modern sports cars. a set of springs for my pickup costs about 10000 sek here which is about $ 1500.

10-15-2010, 06:46 PM	#17
oldblue1968chevy Grandpa in the rustmobile... Join Date: Nov 2008 Location: Spokane WA/Viola TN Posts: 11,422	Re: trailing arm question ^Holy cow! You guys have jeeps over there? Slap a set of TJ springs on it! 5" Rear drop 0 load capacity though. __________________ John Goose-1968 C10 355,9.32-1CR, Vortec Heads ,262 voodoo, 3.73:1 3OTT (HS ride/beater/farm truck) http://67-72chevytrucks.com/vboard/s...d.php?t=317684 Grams 53-1953 Chevrolet Belair http://67-72chevytrucks.com/vboard/s...=1#post4327784 1969 Chevy C10 Shortbed 4.5/6?" Frame off resto http://67-72chevytrucks.com/vboard/s...d.php?t=548136 1999 Toyota Tacoma 4x4

10-15-2010, 11:03 PM	#19
oldblue1968chevy Grandpa in the rustmobile... Join Date: Nov 2008 Location: Spokane WA/Viola TN Posts: 11,422	Re: trailing arm question wow, really awesome __________________ John Goose-1968 C10 355,9.32-1CR, Vortec Heads ,262 voodoo, 3.73:1 3OTT (HS ride/beater/farm truck) http://67-72chevytrucks.com/vboard/s...d.php?t=317684 Grams 53-1953 Chevrolet Belair http://67-72chevytrucks.com/vboard/s...=1#post4327784 1969 Chevy C10 Shortbed 4.5/6?" Frame off resto http://67-72chevytrucks.com/vboard/s...d.php?t=548136 1999 Toyota Tacoma 4x4

10-28-2010, 03:55 PM	#20
fabnsmitty Registered User Join Date: Oct 2010 Location: Lawrenceville, VA Posts: 12	Re: trailing arm question nice work on the arms, do you have any pics of the front of em?

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