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#1 |
Registered User
Join Date: Jan 2010
Location: austin tx
Posts: 14
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Anyone in the 10's still on stock front suspension?
Yes Im new... but i have been reading all the posts and this board is AWESOME!!! Im in the process of building a 67 truck and was if any of you faster guys still had stock a-arms and crossmember?
or how you may have modified them? again this board RULZ! |
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#2 |
Registered User
Join Date: Jun 2004
Location: Saskatchewan, Canada
Posts: 1,368
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Re: Anyone in the 10's still on stock front suspension?
I did 2 years ago, now it just has drag shocks, drop spindles, tubular arms, and dual piston calipers, Not much off stock as far as setup.
__________________
Speed is just a matter of money, question is how fast can you afford to go? 8.95@148.97mph all motor haven't tried bottle yet Sponsored by: Getz Oilfield Consulting Hard Candy Customs |
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#3 |
Registered User
Join Date: Jan 2010
Location: austin tx
Posts: 14
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Re: Anyone in the 10's still on stock front suspension?
Who's spindle and tubular a-arms did you use?
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#4 |
Registered User
Join Date: Nov 2007
Location: Bay Area, Ca
Posts: 2,841
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Re: Anyone in the 10's still on stock front suspension?
I haven't done it yet (11.28), but I'm sure the truck will do it next time out.. If all goes well, I'm hoping to go 11.4-11.5 on motor and deep 10's on a 300 hit. I was running comp 3-way shocks up front and a Moroso 47140 spring in the front (2260 on the nose). I was also using 2.5" drop spindles (which I might be looking for a set of stockers right now).
I have since made my own Cross member but still running that factory arms. Also switched to a Rancho 9000 shock in the front as there was not enough shock travel before.
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------Motor---------------Bottle 60'---1.53---------------1.41 1/8---6.58 @ 105.92----5.87 @ 118.41 1/4---10.38 @ 126.97----9.24 @ 142.49 |
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#5 | |
Registered User
Join Date: Feb 2001
Location: Wetumpka, Al, U.S.
Posts: 8,891
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Re: Anyone in the 10's still on stock front suspension?
Quote:
__________________
Kevin Special Thanks to All who have helped on the TRUCK! My Pass Time Show http://s129.photobucket.com/albums/p...Chapter1-0.mp4 So Far my best Times are: Motor only: 6.44 1/8 @ 104.13 10.39 1/4 @ 125.83 Nitrous Times: 5.785 1/8 @ 118.65 with a 1.336 60ft 9.168 1/4 @ 142.58 with a 250 shot dead out of the hole! |
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#6 |
At the body shop.
Join Date: Aug 2009
Location: Land of fruits and nuts.
Posts: 5,173
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Re: Anyone in the 10's still on stock front suspension?
Pics of the X-member?
__________________
" That didnt make it any newer " " Dont antique the equipment " |
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#7 |
Registered User
Join Date: Jun 2004
Location: Saskatchewan, Canada
Posts: 1,368
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Re: Anyone in the 10's still on stock front suspension?
belltech spindles, and CPP arms, I run stock smallblock springs with a BB, and QA1 shocks.
__________________
Speed is just a matter of money, question is how fast can you afford to go? 8.95@148.97mph all motor haven't tried bottle yet Sponsored by: Getz Oilfield Consulting Hard Candy Customs |
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#8 |
Registered User
Join Date: Feb 2001
Location: Wetumpka, Al, U.S.
Posts: 8,891
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Re: Anyone in the 10's still on stock front suspension?
__________________
Kevin Special Thanks to All who have helped on the TRUCK! My Pass Time Show http://s129.photobucket.com/albums/p...Chapter1-0.mp4 So Far my best Times are: Motor only: 6.44 1/8 @ 104.13 10.39 1/4 @ 125.83 Nitrous Times: 5.785 1/8 @ 118.65 with a 1.336 60ft 9.168 1/4 @ 142.58 with a 250 shot dead out of the hole! |
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#9 |
Registered User
Join Date: Mar 2009
Location: seaside,ca
Posts: 778
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Re: Anyone in the 10's still on stock front suspension?
I think he meant to quote super"s post
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![]() 72 gmc 2500 2wd drive convert ![]() My 72 thread http://67-72chevytrucks.com/vboard/s...d.php?t=346712 THe other truck, wheeler 69 1/2 4x4, yellow and rusty. http://67-72chevytrucks.com/vboard/s...d.php?t=350300 |
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#10 |
Registered User
Join Date: Jan 2010
Location: austin tx
Posts: 14
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Re: Anyone in the 10's still on stock front suspension?
And are you guys running solid bushings?
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#11 |
Registered User
Join Date: Feb 2001
Location: Wetumpka, Al, U.S.
Posts: 8,891
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Re: Anyone in the 10's still on stock front suspension?
10/4
I love the look of the Porter built Trailing arm crossmembers.
__________________
Kevin Special Thanks to All who have helped on the TRUCK! My Pass Time Show http://s129.photobucket.com/albums/p...Chapter1-0.mp4 So Far my best Times are: Motor only: 6.44 1/8 @ 104.13 10.39 1/4 @ 125.83 Nitrous Times: 5.785 1/8 @ 118.65 with a 1.336 60ft 9.168 1/4 @ 142.58 with a 250 shot dead out of the hole! |
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#12 | |
Registered User
Join Date: Jan 2010
Location: austin tx
Posts: 14
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Re: Anyone in the 10's still on stock front suspension?
I never could figure out from the past threads if having the ability to adjust the front of your trailing arms was a benefit?????
so it does let you adjust pinion angle???? Quote:
Last edited by DragHammer; 02-07-2010 at 11:26 PM. |
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#13 |
Registered User
Join Date: Feb 2001
Location: Wetumpka, Al, U.S.
Posts: 8,891
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Re: Anyone in the 10's still on stock front suspension?
My trailing arms are in the stock location but I'm gonna try moving them around to get the absolutely best 60ft out of my new combo. I also want to explore some drag radials.
__________________
Kevin Special Thanks to All who have helped on the TRUCK! My Pass Time Show http://s129.photobucket.com/albums/p...Chapter1-0.mp4 So Far my best Times are: Motor only: 6.44 1/8 @ 104.13 10.39 1/4 @ 125.83 Nitrous Times: 5.785 1/8 @ 118.65 with a 1.336 60ft 9.168 1/4 @ 142.58 with a 250 shot dead out of the hole! |
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#14 |
At the body shop.
Join Date: Aug 2009
Location: Land of fruits and nuts.
Posts: 5,173
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Re: Anyone in the 10's still on stock front suspension?
Sorry about that DJ Yeah supers Xmember pic.
__________________
" That didnt make it any newer " " Dont antique the equipment " |
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#15 |
Registered User
Join Date: Nov 2007
Location: Bay Area, Ca
Posts: 2,841
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Re: Anyone in the 10's still on stock front suspension?
Adjusting the front of the rear arms will allow you to compensate for varying track conditions. It will also help to speed up and slow down the reaction of the vehicle (slightly, more of this is done in the front end).
Will it move your pinion angle, yes, is it the correct way to adjust for pinion angle NO.. The only right way to adjust pinion angle is to use a shim or cut the brackets off and reweld them. I'll see if i can take some pics of the cross member.. There are a bunch of pics i need to take..
__________________
------Motor---------------Bottle 60'---1.53---------------1.41 1/8---6.58 @ 105.92----5.87 @ 118.41 1/4---10.38 @ 126.97----9.24 @ 142.49 Last edited by Super73; 02-08-2010 at 02:22 AM. |
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#16 |
Registered User
Join Date: Jan 2010
Location: austin tx
Posts: 14
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Re: Anyone in the 10's still on stock front suspension?
thanks '73
in that case I agree with Dj and will be getting ahold of one of these nice Porterbuilt Pieces..... looks like HIgh Qualiity Work! |
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#17 |
Registered User
Join Date: Nov 2007
Location: Bay Area, Ca
Posts: 2,841
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Re: Anyone in the 10's still on stock front suspension?
I just looked at their web page.. They mention "Adjustable front trailing arm pivot mounting location. This adjustment allows both pinion angle adjustment, and instant center adjustment."
Yes it will adjust your pinion angle, but again, not the correct way. I don't see independent adjustments. It is simply adjusting your pinion angle based on which hole you put the front eyelet in. This is the exact same concept as my adjustable front mount uses and the reason i use a shim to adjust pinion angle. As you move it up and down to adjust instant center of gravity, the pinion angle changes as a function of the axle rotating (counter) clockwise. You can not adjust the 2 seperately. In other words, you can't adjust your ICG with out affecting your pinion angle and you have no way to compensate the pinion change when you change the ICG. Or if you wanted to correct your pinion angle due to your drop, you would be forced to change your ICG. Now, if they made some form of bolt/shim that went on the flat potion where the rear mounts to the LCA, that you could turn to either raise the front or rear portion of the pad, then you could adjust the pinion angle there and instant center on the front. I sent Porterbuilt a PM with a link here.. I don't want to spread wrong info if there is something I missed.. So hopefully they will chime in.
__________________
------Motor---------------Bottle 60'---1.53---------------1.41 1/8---6.58 @ 105.92----5.87 @ 118.41 1/4---10.38 @ 126.97----9.24 @ 142.49 Last edited by Super73; 02-08-2010 at 10:03 PM. |
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#18 |
Senior Member
Join Date: Dec 2003
Location: Mesa,Az
Posts: 3,981
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Re: Anyone in the 10's still on stock front suspension?
You are correct in your assessment of there NOT being the option of adjusting the pinion angle and instant center INDEPENDENTLY of one another. As mentioned, the correct way to do this would be to make an adjustment with a shim at the rear trailing arm perch, after you have dialed in your instant center. However, the trailing arms do compensate for 2 degrees of pinion angle. This makes up for the angle lost when lowering the rear truck arm suspension 6+ inches.
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www.PorterbuiltFabrication.com Phone: 480-297-2621 E-mail: sales@pbfab.com Find us on FaceBook under Porterbuilt Fabrication Specializing in Chassis and Suspension Components for your Classic Chevrolet Truck. We offer components from the following manufacturers: Porterbuilt Accuair Ridetech (Air Ride Technologies) Air Lift Wilwood Intro Unisteer ECE Gotta Show Air Lift Borgeson CPP Supporting this forum since 2003! |
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#19 |
Registered User
Join Date: Feb 2001
Location: Wetumpka, Al, U.S.
Posts: 8,891
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Re: Anyone in the 10's still on stock front suspension?
Nathan
Its great to have you visit this section of the board. I love your work. I'll be happy to stress test a set of your trailing arms and x-member. I should have my 548 together pretty soon.
__________________
Kevin Special Thanks to All who have helped on the TRUCK! My Pass Time Show http://s129.photobucket.com/albums/p...Chapter1-0.mp4 So Far my best Times are: Motor only: 6.44 1/8 @ 104.13 10.39 1/4 @ 125.83 Nitrous Times: 5.785 1/8 @ 118.65 with a 1.336 60ft 9.168 1/4 @ 142.58 with a 250 shot dead out of the hole! |
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#20 |
Registered User
Join Date: Apr 2008
Location: east, tx
Posts: 149
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Re: Anyone in the 10's still on stock front suspension?
I am, still stock suspension if you don't count the Drag radials.
10.90's at 119 on motor. 10.50 at 125 on a 100 shot I waited to spray it after the 60ft.
__________________
68 chevy truck ls3, 418ci, pump gas 10.81@121.8 all motor. 1.47 60ft 70 suburban 350 tbi swap, 700r4, work in progress |
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#21 |
Registered User
Join Date: Jan 2010
Location: austin tx
Posts: 14
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Re: Anyone in the 10's still on stock front suspension?
Great info!!!
Hey '73 do you have a way to select the proper ICG??? ifast68 what shock and spring are you running with your stock setup? |
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#22 |
Registered User
Join Date: Nov 2007
Location: Bay Area, Ca
Posts: 2,841
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Re: Anyone in the 10's still on stock front suspension?
There is no perfect ICG since there are varying track conditions. But, I believe in setting it as high as the track will allow for (IE the higher it is, the harder it hits and plants the tire). But, you need a shock that can control it too or you might end up with some bad wheel hop..
Knowing where your true CG though is a bonus..
__________________
------Motor---------------Bottle 60'---1.53---------------1.41 1/8---6.58 @ 105.92----5.87 @ 118.41 1/4---10.38 @ 126.97----9.24 @ 142.49 Last edited by Super73; 02-09-2010 at 05:40 PM. |
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#23 | |
Registered User
Join Date: Apr 2008
Location: east, tx
Posts: 149
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Re: Anyone in the 10's still on stock front suspension?
Quote:
and just some lowering springs It gets a 1.56 60ft is the best so far.
__________________
68 chevy truck ls3, 418ci, pump gas 10.81@121.8 all motor. 1.47 60ft 70 suburban 350 tbi swap, 700r4, work in progress |
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#24 |
Registered User
Join Date: Jan 2010
Location: austin tx
Posts: 14
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Re: Anyone in the 10's still on stock front suspension?
Thanks '73 I have read both your suspension chapters and cant wait for the 3rd and used your spreadsheet to select springs and adjustable shocks.
This may be an odd question but if the higher the mounting point the better why not raise the adjustment point higher that just a few inches????? nice 60ft Fast68... gives me more and more hope with the OE control arms |
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#25 |
Registered User
Join Date: Feb 2001
Location: Wetumpka, Al, U.S.
Posts: 8,891
|
Re: Anyone in the 10's still on stock front suspension?
This is a really old picture of my truck from before I owned it. In this pic it had trailing arms and stock front suspension.
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__________________
Kevin Special Thanks to All who have helped on the TRUCK! My Pass Time Show http://s129.photobucket.com/albums/p...Chapter1-0.mp4 So Far my best Times are: Motor only: 6.44 1/8 @ 104.13 10.39 1/4 @ 125.83 Nitrous Times: 5.785 1/8 @ 118.65 with a 1.336 60ft 9.168 1/4 @ 142.58 with a 250 shot dead out of the hole! |
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