![]() |
|
![]() |
#1 |
Registered User
Join Date: Jan 2011
Location: Mount Airy, NC
Posts: 132
|
Re: Make it handle
Thanks for the input. If it sounds to good to be true, it probably is.
__________________
Jack Byrd '70 Chev Custom SWB(new to me), 307CID(added Weiand Stealth, headers and Edelbrock Performer carb, up to 17 MPG now), 700R4 '76 Airstream Argosy MH(want a longer one), 454CID, TH400 |
![]() |
![]() |
![]() |
#2 |
Registered User
Join Date: Feb 2012
Location: Ruskin Florida
Posts: 4,553
|
Re: Make it handle
I think you may be thinking of a "Cal Trac" setup.
__________________
70 swb 4x4 406sbc 700r4 203/205 d60/14blt locker yadda yadda http://67-72chevytrucks.com/vboard/s...88#post6935688 Yeller 72 Blazer 2wd conversion project "No Daggum Money" http://67-72chevytrucks.com/vboard/s...d.php?t=550804 LS1-T56 3.73 LSD super budget build Blanco-2014 Sierra SWB https://67-72chevytrucks.com/vboard/...d.php?t=810350 |
![]() |
![]() |
![]() |
#3 |
Registered User
Join Date: Dec 2002
Location: Cactus Patch So. Az
Posts: 4,749
|
Re: Make it handle
[QUOTE=jjzepplin;7013995]I think you may be thinking of a "Cal Trac" setup.[/QUOTE
Anyone with experience with Cal-tracs, how do they work when de-acceleration?
__________________
53 TuTone Extended Cab 350 4-Spd 3:08 (SOLD) 53 Chevy Moldy pearl green ZZ-4 4L60E 9" 3:25 55 GMC 1st Black Mll (ZZ4) ZZ6 TKO 600 5 sp 3:73 62 Solidaxle Corvette Roman Red (327 340hp 4spd 3:36) C4 & C5 suspension tube chassis LS 3 4L70E 65 Corvette Coupe 327 350hp 4spd 4:11 78 Black Silverado SWB (350/350) 5.3 & 4L60E 3:42 2000 S-Type 3.0 (wife cruiser) 2003 GMC SCSB 5.3 4L60E 3:42 |
![]() |
![]() |
![]() |
#4 |
Registered User
Join Date: Dec 2013
Location: Dallas Ga
Posts: 308
|
Re: Make it handle
[quote=solidaxel;7014556]Cal Tracs work great in drag racing for loading the tires. My experience is in a 67 camaro with factory type suspension. I can't speak for "our" trucks.
|
![]() |
![]() |
![]() |
#5 |
Registered User
Join Date: Jan 2015
Location: Phoenix
Posts: 29
|
Re: Make it handle
The guys on the diesel sites love the Cal-Tracs and most always opt for bars, the Cal-Tracs are right around $400.00. Most will not buy them when they find you have to remove the one bushing from the rear eyelet of the leaf spring (and remove the leaf spring) and install/press the aluminum pivot bushing in its place and can be noisy for a daily driver...As for deceleration never read any comments...
|
![]() |
![]() |
![]() |
#6 |
Registered User
Join Date: Jan 2011
Location: Mount Airy, NC
Posts: 132
|
Re: Make it handle
I Googled Cal Trac and they appear to be just a traction bar setup like the old Traction Masters. They bolt on the leaf springs to prevent spring wrap up. The setup I've been seeing has a tube locating the axle front to rear, a track bar for right to left, and coilovers, no leaf springs.
Thanks for the info though,
__________________
Jack Byrd '70 Chev Custom SWB(new to me), 307CID(added Weiand Stealth, headers and Edelbrock Performer carb, up to 17 MPG now), 700R4 '76 Airstream Argosy MH(want a longer one), 454CID, TH400 |
![]() |
![]() |
![]() |
#7 |
56 - autocross
Join Date: Apr 2010
Location: Camarillo, Ca
Posts: 1,121
|
Re: Make it handle
ROB No-Limit or anyone else. Have a question.
Was thinking about moving my engine back another 6 inches (already made space for 3 inches). Is this worth the trouble? I am at a point where I need to determine engine placement and would not have to cut it loose or change drive shaft, etc. I would have to further recess the firewall and will displace the Vintage Air unit under the dash. I am hesitant because I still want air and don't know of another solution. I guess I'm trying to have my cake and eat it too. |
![]() |
![]() |
![]() |
#8 | |
Senior Member
![]() Join Date: Jul 2010
Location: Dandridge, Tn. USA
Posts: 2,226
|
Re: Make it handle
Quote:
__________________
GoodGuys 2012 Pro-Truck Champion ![]() 2012 Truckin' Throwdown Champion GoodGuys 2011 National Champion ![]() 2011 Truckin' Throwdown Champion GoodGuys 2010 National Champion ![]() Proud to put our products up against all others! |
|
![]() |
![]() |
![]() |
#9 |
Registered User
Join Date: Nov 2014
Location: Langley B.C
Posts: 179
|
Re: Make it handle
When selecting coilovers for a custom set up, should the strut/shock be the same front to back and just spring rate change or should the back get more stoke or vis versa?
Thought that might be a good question. Hope it hasn't been covered |
![]() |
![]() |
![]() |
#10 | |
Senior Member
![]() Join Date: Jul 2010
Location: Dandridge, Tn. USA
Posts: 2,226
|
Re: Make it handle
Quote:
The front shock is on the A-arm, and is leveraged. For my example I'll use 50%, or 2 to 1. (really it's probably 65%) So, when the tire moves 2", the shock only moves 1". It's also moving at a slower speed. On the rear axle, Coil overs are usually mounted very close to a 1 - 1 motion ratio. So 2" of tire movement = 2" of shock movement. At first you may think that the front shock should have 2x the dampening rate of the rear shock, but it's more than that. the forces climb exponentially. Also, there is more weight(force) on the front. Thinking about the motion vs the forces will get you to start thinking that the front dampening rates should be 2 to 3 times the rear rates, and that's close. *** But this really only counts for compression. Because our trucks are nose heavy, the rear tends to bounce a lot. This is mostly due to the ratios of 'sprung weight' vs. 'unsprung weight'. So we find that the rear shock need more rebound rate than the front. Usually 1.5 to 2 times more. It's really hard to get shocks like this, unless you custom build them. For a good selection of steel body shocks look at some Oval Track suppliers. All of our suspensions include RideTech or Viking coil-overs, and we have worked with them to build custom build our own valves and valve codes. - I hope that answered your question without being to complicated.
__________________
GoodGuys 2012 Pro-Truck Champion ![]() 2012 Truckin' Throwdown Champion GoodGuys 2011 National Champion ![]() 2011 Truckin' Throwdown Champion GoodGuys 2010 National Champion ![]() Proud to put our products up against all others! |
|
![]() |
![]() |
![]() |
#11 |
Registered User
Join Date: Jan 2015
Location: Phoenix
Posts: 29
|
Re: Make it handle
robnolimit, I have a 2006 2500HD Duramax long bed extended cab and cannot stand the Ranchos 9000's on the front and run 1-1/2" sway bars front and rear along with about 1200lbs in the bed, any suggestions for Viking shocks for the front of this heavy truck with torsion bars?
Last edited by C20ELEPHANT; 03-03-2015 at 06:30 PM. |
![]() |
![]() |
![]() |
#12 | |
Senior Member
![]() Join Date: Jul 2010
Location: Dandridge, Tn. USA
Posts: 2,226
|
Re: Make it handle
Quote:
__________________
GoodGuys 2012 Pro-Truck Champion ![]() 2012 Truckin' Throwdown Champion GoodGuys 2011 National Champion ![]() 2011 Truckin' Throwdown Champion GoodGuys 2010 National Champion ![]() Proud to put our products up against all others! |
|
![]() |
![]() |
![]() |
#13 |
Registered User
Join Date: Nov 2014
Location: Langley B.C
Posts: 179
|
Re: Make it handle
Great info like alway. But I think I worded my question wrong. I'm putting an independent rear in mine and doing custom mounting points so I'm trying to figure out what ridetech coilover shocks to get. I have about 3.5" or so of travel in the suspension so I'm thinking the 4.1" stroke shock. That is 14" long. Now I'm also putting in the matching front suspension to the rear up front. So my question is do I match the length/stroke shock? So 14" long units front and back? Hope this makes sense. I'm trying to get an idea of where to put the mounts.
Thanks again |
![]() |
![]() |
![]() |
#14 | |
Senior Member
![]() Join Date: Jul 2010
Location: Dandridge, Tn. USA
Posts: 2,226
|
Re: Make it handle
Quote:
__________________
GoodGuys 2012 Pro-Truck Champion ![]() 2012 Truckin' Throwdown Champion GoodGuys 2011 National Champion ![]() 2011 Truckin' Throwdown Champion GoodGuys 2010 National Champion ![]() Proud to put our products up against all others! |
|
![]() |
![]() |
![]() |
#15 | |
Registered User
Join Date: Nov 2014
Location: Langley B.C
Posts: 179
|
Re: Make it handle
Quote:
So if my suspension travel is 3.5" to where it's starting to stress the balljoints (It could go farther but starts to resist) then I should get the 3.6" stroke shock and set my bump stops at about the 3" travel point? That sound within the rules? (In theory) |
|
![]() |
![]() |
![]() |
#16 |
Registered User
Join Date: Mar 2010
Location: mexico
Posts: 52
|
Re: Make it handle
greatest tread, just what i need!!
|
![]() |
![]() |
![]() |
#17 |
Registered User
Join Date: Apr 2013
Location: Chicago il
Posts: 40
|
Re: Make it handle
This is the best thread going, wealth of knowledge. Sadly I sold my 68 and replaced it with a 2012 chevy rcsb, to start the front im going with spindles and a viking coil over for about a 4 inch drop and better handling, I am considering a full back half this summer to increase ride quality and handling. What type of suspensions should I be researching for a part time dd that will also do some mile speed work? Tri 4 link? Parralell 4 link? I think a torque arm would be easiest using front spring mounts like they do with novas and cameros. Any ideas are welcome. Thanks
|
![]() |
![]() |
![]() |
#18 |
Registered User
Join Date: Dec 2013
Location: Dallas Ga
Posts: 308
|
Re: Make it handle
Well it took about 3 weeks but I finally read all of the posts on this thread. I think I will read it again just to make sure I can wrap my brain around this stuff. Thanks to Rob especially and all of you guys that make threads like this worth the time.
|
![]() |
![]() |
![]() |
#19 |
Senior Member
![]() Join Date: Jul 2010
Location: Dandridge, Tn. USA
Posts: 2,226
|
Re: Make it handle
Thanks guys. I wasn't sure about this thread when it started, but I'm happy that it has helped so many. It is now so big that I wish i had cut it up into sections, but then again, all of this stuff works together. We are working on some new stuff so we should have a bunch more info to put up soon. We are setting up the new Holley Data Acquisition systems on two trucks (the Hellboy and the JT) and we will be able to gather all sorts of suspension, shock, and spring data. We plan to use this towards the development of new VR springs and matched shocks, using Off-the-Shelf equipment. Should be fun. Keeping pushing forward.
__________________
GoodGuys 2012 Pro-Truck Champion ![]() 2012 Truckin' Throwdown Champion GoodGuys 2011 National Champion ![]() 2011 Truckin' Throwdown Champion GoodGuys 2010 National Champion ![]() Proud to put our products up against all others! |
![]() |
![]() |
![]() |
#20 |
Registered User
Join Date: Jun 2011
Location: Spokane, WA
Posts: 2,367
|
Re: Make it handle
Rob,
I'd like to get some shocks ordered and could use a little help. On the front of my '67 C10 I've got 2-1/2" drop spindles and 2" drop springs. There's a good chance I'll change the springs to a 1" drop. Think the stock mounting locations are cool with that setup? Stock dimensions on the shock? I've got your relocate setup on the rear with a 5" drop spring and about an inch of block. Can you recommend shock dimensions for that or how would I go about measuring for one? I'll run the Gas Magnums.
__________________
'77 K30 3+3 - "The Crummy" http://67-72chevytrucks.com/vboard/s...d.php?t=640134 '67 C10 L/SWB - Soon to be daily driver! http://67-72chevytrucks.com/vboard/s...d.php?t=471776 ![]() |
![]() |
![]() |
![]() |
#21 |
Senior Member
![]() Join Date: Jul 2010
Location: Dandridge, Tn. USA
Posts: 2,226
|
Re: Make it handle
With a 2" spring drop in front and OE mounts, an OE spec shock should be OK. In the rear, with a 5" spring drop you may need a sorter shock. Check the 'full open' length, set the truck on the ground, on the tires and use a floor jack to lift the frame up until the springs have no tension (best to unbolt one end). Measure eye to eye, and then subtract 1" - we never want the spring to go slack. That will be the full open length at the max.
__________________
GoodGuys 2012 Pro-Truck Champion ![]() 2012 Truckin' Throwdown Champion GoodGuys 2011 National Champion ![]() 2011 Truckin' Throwdown Champion GoodGuys 2010 National Champion ![]() Proud to put our products up against all others! |
![]() |
![]() |
![]() |
#22 |
Registered User
Join Date: Nov 2014
Location: Langley B.C
Posts: 179
|
Re: Make it handle
Just watched this video and thought it fit here
http://youtu.be/yeju3pbopMg I don't know how you post videos but there's the link and mabey someone can post it properly |
![]() |
![]() |
![]() |
#23 | |
Registered User
![]() Join Date: May 2011
Location: Missoula, MT
Posts: 934
|
Re: Make it handle
Quote:
__________________
69 GMC C10 build thread- http://67-72chevytrucks.com/vboard/s...d.php?t=501676 03 Silverado build thread-http://67-72chevytrucks.com/vboard/s...d.php?t=591582 |
|
![]() |
![]() |
![]() |
#24 |
Registered User
Join Date: May 2008
Location: Eastern Iowa
Posts: 423
|
Re: Make it handle
I have a 1967 short bed. front suspension is CPP 3" dropped springs, CPP modular spindles, KYB shocks. Stock upper and lower control arms I have a 1 1/4 inch sway bar to install. Rear Early Classic 6" drop springs plus 1 1/2" lowering blocks and pan hard bar, KYB shocks. How do you think it will handle and what could I add to make it handle better. This is a project and I have not driven it yet. I'm a divorced guy paying child support, so I don't have a lot to spend.
Thanks Matt
__________________
Matt Garage build http://www.garagejournal.com/forum/s...ead.php?t=6784 My slow but sure truck build http://67-72chevytrucks.com/vboard/s...d.php?t=394924 ![]() My philosophy on tires is the same as cigarettes. "smoke them if you got them" HAPPILY DIVORCED! |
![]() |
![]() |
![]() |
#25 |
Senior Member
![]() Join Date: Jul 2010
Location: Dandridge, Tn. USA
Posts: 2,226
|
Re: Make it handle
Should do OK. Caster may be the hold-up. Check out the "my caster mod with picts" thread, low $$ and good results
__________________
GoodGuys 2012 Pro-Truck Champion ![]() 2012 Truckin' Throwdown Champion GoodGuys 2011 National Champion ![]() 2011 Truckin' Throwdown Champion GoodGuys 2010 National Champion ![]() Proud to put our products up against all others! |
![]() |
![]() |
![]() |
Bookmarks |
|
|