Front coil over spring rate help - Pontiac GTO Forum
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post #1 of 6 (permalink) Old 12-23-2018, 04:57 PM Thread Starter
 
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Front coil over spring rate help

I'm looking to purchase a set of coil overs for my 1966 GTO. The car will not see the track or autocross. Daily driver as a real estate agent car. I like the Qa1 set with 500 lb springs,
My question is.. What spring rates and coil overs are people running?

Thanks
Ken
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post #2 of 6 (permalink) Old 12-23-2018, 09:25 PM
 
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Quote:
Originally Posted by Ken 66gto View Post
I'm looking to purchase a set of coil overs for my 1966 GTO. The car will not see the track or autocross. Daily driver as a real estate agent car. I like the Qa1 set with 500 lb springs,
My question is.. What spring rates and coil overs are people running?

Thanks
Ken
In the right hand corner of this page is the "Google Custom Search." Type in "front coil overs" and you will find several recommendations.
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post #3 of 6 (permalink) Old 12-24-2018, 08:01 AM Thread Starter
 
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Thanks Jim

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Originally Posted by PontiacJim View Post
In the right hand corner of this page is the "Google Custom Search." Type in "front coil overs" and you will find several recommendations.
Thanks Jim,
Believe it or not I did a search first. Found a few pages you responded to but I didn't find a recommendation from someone who installed and has driven their car. Is a 500 lb spring too hard for a driver 66 GTO

Ken
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post #4 of 6 (permalink) Old 12-24-2018, 08:28 AM
 
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Originally Posted by Ken 66gto View Post
Thanks Jim,
Believe it or not I did a search first. Found a few pages you responded to but I didn't find a recommendation from someone who installed and has driven their car. Is a 500 lb spring too hard for a driver 66 GTO

Ken
I went with 550# springs (Viking double adjustable coilovers) on my 65 convertible and absolutely LOVE the ride. I replace all of the rubber up front as well (with poly). The car is very responsive / predictable and for me the spring rate is appropriate for such a heavy and fast car. Happy to answer any questions you may have. All the best and Merry Christmas!

1965 GTO Convertible 3 speed tri-power drum brakes originally

Current setup:
400 cu in with tri-power
4 speed Muncie
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post #5 of 6 (permalink) Old 12-24-2018, 09:43 AM Thread Starter
 
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Thanks
100 lbs front end weight difference from 500 to 550
500 rated for a small block - 550 big block according to summit
My current motor is a 350, but the weight should be the same as a 389/400
Big decision, big purchase
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post #6 of 6 (permalink) Old 12-24-2018, 08:34 PM
 
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Originally Posted by Ken 66gto View Post
Thanks
100 lbs front end weight difference from 500 to 550
500 rated for a small block - 550 big block according to summit
My current motor is a 350, but the weight should be the same as a 389/400
Big decision, big purchase
The pontiac 389 / 400 is a heavy motor....All the folks I spoke to at UMI / Sphoon / Viking all recommended 550# (but they know how I like to drive too)....My daily driver is a 600+ whp car and I enjoy surprising supercars when out for a spin or just getting groceries. If you like to "cruise", you would be fine with a softer spring (car may roll a bit more in turns and move around more under acceleration / deceleration)....

Good luck

1965 GTO Convertible 3 speed tri-power drum brakes originally

Current setup:
400 cu in with tri-power
4 speed Muncie
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