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Old 08-10-2006, 11:52 AM
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front shocks question

Hello, I am rebuilding the front end of my 1970 Nova and trying to decide what kind of shocks to buy, The car will have a 350 in it and be used for mostly street but occasional track trips. Does anyone have any input or preferences for front shocks that are good for street driving but also help in transfering weight and getting the car moving down the line?

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Old 08-10-2006, 01:13 PM
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Front shocks have only a very small effect on weight transfer. Weight transfer is a function of total weight, acceleration, wheelbase, and center of gravity height. The popular 10/90 drag shocks allow the front end to rise a bit quicker than the stock shocks, but they don't allow any greater CG height. So, while they might offer an advantage, it is only for a very, VERY short period of time. Lower rate springs, on the other hand, allow greater front end lift that is sustained. But, if you're going to change springs, you might consider adjustable coilovers. With these, there's another trick you can play. Since a lower rate spring allows higher lift of the front end during launch, you can, with adjustable coilovers, use a spring rate at the LF that is lower than that at the RF. This means the LF corner will lift higher than the RF. It then follows that the car is tending to pivot about a line through the RF and LR tire patches and the RR corner of the car is coming down. This tends to compensate for the driveshaft torque effect and helps to equalize the rear tire loading for greater traction.

For the necessary spring rates, see my blog:
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Old 08-10-2006, 01:47 PM
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Personally, I'd suggest a postive pressured shock like KYB(most off road truck shocks are of this type..).
On take off, the shock pressure will let the front end rise for weight distribution, but not allow the front end to dive at the end of the torque curve like a balanced pressurized shock(the push is even with the pull).
The quick dive and then continued 'bounce' of balanced, or negative pressured shocks can take several 10ths of a second off your ET.

You want your launch to be smooth - with no bounce. The 'bounce' surge will slow you down...

Best of luck!
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Old 08-10-2006, 08:28 PM
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thanks for the information, anyone have any experience or information with the lakewood 70/30 front shocks?
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