The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1967 - 1972 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 09-14-2003, 11:05 PM   #1
Chevyguy111786
Registered User
 
Join Date: Apr 2003
Location: Garland, Texas
Posts: 1,127
Coil to Leaf?

I was considering switching to a leaf suspension. If i do this. Would there still be a need for the trailing arms? and are leafs more stable than coils. which holds more? thanks
Chevyguy111786 is offline   Reply With Quote
Old 09-14-2003, 11:45 PM   #2
crazy longhorn
Fabricate till you "puke"
 
Join Date: Jun 2002
Location: Ill
Posts: 9,403
If you switch to leafs, you wont needthe trailing arms.As far asload tings , the leafs should hold more. they also corner a little flatter. There are a few cons also .....wheel hop issues, squeaks in the rear suspension,stiffer ride,ect.I have run slapper bars to help with wheel hop.I am setting up a 2 link with bags for the longhorn. The factory trailing arms are a very good design. Good luck,crazyL
__________________
69 longhorn,4" chop,3/5 drop, 1/2 ton suspension/disc brakes,1 1/2" body drop,steel tilt clip, 5.3/Edelbrock rpm intake/600 carb, Hooker streetrod shorties,2 1/2" exhaust/ H pipe/50's Flows , 6 spd Richmond trans,12 bolt/ 3.40 gears....
crazy longhorn is offline   Reply With Quote
Old 09-14-2003, 11:50 PM   #3
Longhorn Man
its all about the +6 inches
 
Longhorn Man's Avatar
 
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
In reality, both coils and leaf springs are rated for the exact same loads. In minor overloads, the leafs are better, but if you get real crazy and load 3000 pounds of crap in a 1/2 ton (Just an example) then the coils will go into coil bind and stack up into a solid spacer between the frame and axle, while a leaf spring truck would be snapping leafs. (and these trucks do seem to break leafs)
Longhorn Man is offline   Reply With Quote
Old 09-15-2003, 12:07 AM   #4
crazy longhorn
Fabricate till you "puke"
 
Join Date: Jun 2002
Location: Ill
Posts: 9,403
The coils are no doubt a better setup crazyL
__________________
69 longhorn,4" chop,3/5 drop, 1/2 ton suspension/disc brakes,1 1/2" body drop,steel tilt clip, 5.3/Edelbrock rpm intake/600 carb, Hooker streetrod shorties,2 1/2" exhaust/ H pipe/50's Flows , 6 spd Richmond trans,12 bolt/ 3.40 gears....
crazy longhorn is offline   Reply With Quote
Old 09-15-2003, 12:25 AM   #5
Longhorn Man
its all about the +6 inches
 
Longhorn Man's Avatar
 
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
I agree, I just wish i could install one ton coils on the longhorn...if only there was such an animal.
Longhorn Man is offline   Reply With Quote
Old 05-26-2011, 11:58 PM   #6
LostMy65
But Found Her 25yrs Later!
 
LostMy65's Avatar
 
Join Date: Oct 2010
Location: Oregon City, Oregon
Posts: 10,525
Re: Coil to Leaf?

Quote:
Originally Posted by Longhorn Man View Post
I agree, I just wish i could install one ton coils on the longhorn...if only there was such an animal.
My thought was to get some bags capable of 1ton+.
I was thinking this would be the best of both worlds.
Let the air out when unloaded for a smooth ride, and pump em up when carrying a load.
Posted via Mobile Device
__________________
I lost my 65 - Found it 25 years later:
http://67-72chevytrucks.com/vboard/s...d.php?t=426650

66 C20 Service Truck:
http://67-72chevytrucks.com/vboard/s...d.php?t=428035
LostMy65 is offline   Reply With Quote
Old 09-15-2003, 12:49 AM   #7
72 CustomCamper
huh ???
 
72 CustomCamper's Avatar
 
Join Date: Nov 2002
Location: Fredericksburg,Va.
Posts: 3,369
Quote:
Originally posted by Longhorn Man
In reality, both coils and leaf springs are rated for the exact same loads. In minor overloads, the leafs are better, but if you get real crazy and load 3000 pounds of crap in a 1/2 ton (Just an example) then the coils will go into coil bind and stack up into a solid spacer between the frame and axle, while a leaf spring truck would be snapping leafs. (and these trucks do seem to break leafs)
I don't know about that Andy, my C/20 has more than once had over 6 tons yes thats TONS of rocks in one load on it, and the leaves are fine...

Chuck
__________________
90 Blazer Silverado 350w/ 700R4 and 32" Kelly's

"I am a bomb technician. If you see me running try to keep up!"
72 CustomCamper is offline   Reply With Quote
Old 09-15-2003, 08:45 AM   #8
Huck
Senior Member
 
Huck's Avatar
 
Join Date: Jun 2001
Location: Shelbyville, KY
Posts: 3,269
Leaf vs coil

There was just a great article a while back on leaf/coil in one of the trucks mags---if you look under the bottom of a NASCAR you will see a very familiar set up, of rear control arms similar to our trucks!!!
However, the article talks to the mounting of the springs ----leafs are on the outside of the frame which makes the handling a little better on curves verses the coil which is mounted on the inside of the frame. Leafs limit the size of the rear tires a bit -but you got have really big rubber before that becomes a factor. I have two 1/2 ton trucks -one coil and one leaf- both with front sway bars, ralley wheels and both with overload booster springs. The leaf truck hauls better with lots of weight as you don't feel like it is going to roll over on turns. The leafs tend to pull a trailer better as well. For a "nice ride" the coils are a bit better. So in summary, kind of depends on what you are going to do with your truck. Can't talk to the 3/4 ton issue as my experience is strictly 1/2 ton.
Chevy switched back to leafs after 72 and are still using them!?
Huck is offline   Reply With Quote
Old 09-15-2003, 10:58 AM   #9
VTKidder
Registered User
 
Join Date: May 2003
Location: Vermont
Posts: 996
Does anyone know the rating on coils with the inverted leaf overload spring? '69 C-10 by the way.
VTKidder is offline   Reply With Quote
Old 05-27-2011, 12:05 AM   #10
leddzepp
Moderator
 
leddzepp's Avatar
 
Join Date: May 2007
Location: Southern Cal
Posts: 19,996
Re: Coil to Leaf?

Wow....this thread is almost 8 years old...
__________________
1972 C/10 Cheyenne Super SWB. Restored, loaded, slammed.

1968 C/10 50th Anniversary LWB. Unrestored, stock, daily driver/work truck.


RIP ElJay
RIP 67ChevyRedneck
RIP Grumpy Old Man
leddzepp is offline   Reply With Quote
Old 05-27-2011, 12:10 AM   #11
LostMy65
But Found Her 25yrs Later!
 
LostMy65's Avatar
 
Join Date: Oct 2010
Location: Oregon City, Oregon
Posts: 10,525
Re: Coil to Leaf?

I didn't even notice.

I used the Google search above with 'leaf coil' and this thread popped.

I am kinda funny about trying to find an existing thread to post in rather than starting another.
Posted via Mobile Device
__________________
I lost my 65 - Found it 25 years later:
http://67-72chevytrucks.com/vboard/s...d.php?t=426650

66 C20 Service Truck:
http://67-72chevytrucks.com/vboard/s...d.php?t=428035
LostMy65 is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 12:28 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com