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01-08-2022, 10:30 AM | #1 |
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Join Date: Aug 2010
Location: HSV, AL
Posts: 274
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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
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1965 Suburban Waiting on Time and Money Last edited by RoyL; 01-08-2022 at 10:38 AM. |
01-09-2022, 01:42 AM | #2 | |
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Join Date: Apr 2001
Location: DALLAS,TX
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Re: QA1 Coilovers Spring Rate 650-750-850?
Quote:
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.
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01-09-2022, 10:22 PM | #3 | |
Senior Member
Join Date: Aug 2010
Location: HSV, AL
Posts: 274
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Re: QA1 Coilovers Spring Rate 650-750-850?
Quote:
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.
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1965 Suburban Waiting on Time and Money |
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01-09-2022, 02:04 AM | #4 |
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Join Date: Feb 2012
Location: Beautiful BC, Canada, eh?!
Posts: 2,162
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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.
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