1937-1957 Buick Oldsmobile Pontiac suspension upgrade
(→Brakes) |
(→Springs) |
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Note - later I added a power rack and pinion, and changed out the steering arms, but the pontiac arms will work fine on a 605 power box upgrade. | Note - later I added a power rack and pinion, and changed out the steering arms, but the pontiac arms will work fine on a 605 power box upgrade. | ||
| − | ==Springs== | + | ===Springs=== |
The stock springs should work fine. As the Article suggested, you will need to spread the bottom of the spring a bit. The 58 Pontiac spring pocket is about ¼ inch larger than the previous years. I had chopped 3 inches out of my original springs to get ride height. So now I needed new springs. My original springs were too long, and to stiff, since the SBC conversion, so buying new stock ones made no sense. I went hunting replacements. FWIW, I needed a spring rate of approximately 300 pounds, with a ride height of 9.5 inches and a free height of 15 inches. I ended up with 69 Cougar springs. They were listed at 295 pounds, 10.5 ride height and 17 inches free height. Once I cut a full coil off, everything fell into place. They were also 3.88 inches in diameter. Halfway between the original upper pocket and the 58 lower pocket. | The stock springs should work fine. As the Article suggested, you will need to spread the bottom of the spring a bit. The 58 Pontiac spring pocket is about ¼ inch larger than the previous years. I had chopped 3 inches out of my original springs to get ride height. So now I needed new springs. My original springs were too long, and to stiff, since the SBC conversion, so buying new stock ones made no sense. I went hunting replacements. FWIW, I needed a spring rate of approximately 300 pounds, with a ride height of 9.5 inches and a free height of 15 inches. I ended up with 69 Cougar springs. They were listed at 295 pounds, 10.5 ride height and 17 inches free height. Once I cut a full coil off, everything fell into place. They were also 3.88 inches in diameter. Halfway between the original upper pocket and the 58 lower pocket. | ||
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