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 1960 - 1966 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 01-08-2022, 10:30 AM   #1
RoyL
Senior Member
 
RoyL's Avatar
 
Join Date: Aug 2010
Location: HSV, AL
Posts: 250
QA1 Coilovers Spring Rate 650-750-850?

Coil over Spring Rates Discussed in this YouTube Video, says 750 lb is the most used [starts ~2:45]... What have you guys installed in your C10s?

https://www.youtube.com/watch?v=foX1...JClassicTrucks

My Suburban has no engine, fenders, etc., so can't do any weighing. It's been X-member swapped from a 73-87 C10 and have 2" drop spindles for disc brakes and 1" drop front coils. 4" drop coils in the rear. Had a 350 sbc/TH350 trans, planning on a 5.3/6.0 swap with 4L60/80.

POL Coilovers [Aldan American] state their spring rates are:

Small Block Spring Rate = 450#, Big Block Spring Rate = 550#

https://www.performanceonline.com/19...n-kit-stage-3/

RideTech Coilover springs appear to be P/N - 59080800 Coilspring 8” 800lb
https://www.ridetech.com/instructions/11360201_WEB.pdf
__________________
1965 Suburban
Waiting on Time and Money

Last edited by RoyL; 01-08-2022 at 10:38 AM.
RoyL is offline   Reply With Quote
Old 01-09-2022, 01:42 AM   #2
SCOTI
Registered User
 
SCOTI's Avatar
 
Join Date: Apr 2001
Location: DALLAS,TX
Posts: 21,521
Re: QA1 Coilovers Spring Rate 650-750-850?

Quote:
Originally Posted by RoyL View Post
Coil over Spring Rates Discussed in this YouTube Video, says 750 lb is the most used [starts ~2:45]... What have you guys installed in your C10s?

https://www.youtube.com/watch?v=foX1...JClassicTrucks

My Suburban has no engine, fenders, etc., so can't do any weighing. It's been X-member swapped from a 73-87 C10 and have 2" drop spindles for disc brakes and 1" drop front coils. 4" drop coils in the rear. Had a 350 sbc/TH350 trans, planning on a 5.3/6.0 swap with 4L60/80.

POL Coilovers [Aldan American] state their spring rates are:

Small Block Spring Rate = 450#, Big Block Spring Rate = 550#

https://www.performanceonline.com/19...n-kit-stage-3/

RideTech Coilover springs appear to be P/N - 59080800 Coilspring 8 800lb
https://www.ridetech.com/instructions/11360201_WEB.pdf
You need to do calculations for the combo to get your target spring rate for starting.

The weight of the front components, suspension pivot point dimensions, & shock angle are some of the things you need to have an idea of to get started. Ridetech has an index w/various component combos to help narrow starting spring-rate choices.

It's definitely not a 'one size fits all' answer so even if you have a similar combo as another guys, the ride quality interpretation is subjective & you may want more/less spring rate vs. what they have.
__________________
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.
SCOTI is offline   Reply With Quote
Old 01-09-2022, 02:04 AM   #3
SkinnyG
Registered User
 
SkinnyG's Avatar
 
Join Date: Feb 2012
Location: Beautiful BC, Canada, eh?!
Posts: 1,918
Re: QA1 Coilovers Spring Rate 650-750-850?

My '77 daily driver C10 has Moog 6454 1-ton coil springs, which are rated at 1060lbs/in. They are perfectly fine. But ride quality IS subjective.

I would not go softer. I'm also running "Big 10" leafs in the back as well.
__________________
1961 Apache: "It's Not Yellow" Shortboxed, pancake, step-notch, air-ride, boosted-LS
1977 Silverado: The Daily - shortboxed & dropped, potato-potato
V8 Pontiac Firefly (Chevy Sprint): The ultimate engine swap: 5.7lbs in a 1lb bag
Lotus Super 7 Replica: Scratch-built street-legal rollerskate
SkinnyG is offline   Reply With Quote
Old 01-09-2022, 10:22 PM   #4
RoyL
Senior Member
 
RoyL's Avatar
 
Join Date: Aug 2010
Location: HSV, AL
Posts: 250
Re: QA1 Coilovers Spring Rate 650-750-850?

Quote:
Originally Posted by SCOTI View Post
You need to do calculations for the combo to get your target spring rate for starting.

The weight of the front components, suspension pivot point dimensions, & shock angle are some of the things you need to have an idea of to get started. Ridetech has an index w/various component combos to help narrow starting spring-rate choices.

It's definitely not a 'one size fits all' answer so even if you have a similar combo as another guys, the ride quality interpretation is subjective & you may want more/less spring rate vs. what they have.
Thx, understand. I do need to know the basics of my vehicle... still want to know what others have used and their experience with them.


Yes, looks like Ridetech has a nice link to vehicle weights and A and B dimensions on their calculator. https://www.ridetech.com/tech/vehicle-weights/
Suburban is spelled 'Surburban' if you search. Says typical weight with a V8 and 700R4 is 4,500, front weight is 2,280. Used their A-arm data for dimension A and B (10.94" and 16.94"), some trial and error with the angle and spring stroke and spring length.

Guesstimate using the Ridetech coils [73-87 coilover kit includes this spring: 59080800, Coilspring, 8, 800lb] which results in ~700 lb for a cruiser/daily driver.

If I use QA1's 10" coil, 1OHTXXX, SPRING, 1O" HIGH TRAVEL 2-1/2" ID, results are ~550 lb
I'll have to get QA1's A/B dimensions to be apples to apples, I guess.
__________________
1965 Suburban
Waiting on Time and Money
RoyL is offline   Reply With Quote
Reply

Bookmarks

Tags
qa1 coilover

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 05:07 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2023, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com