The instructions say to use one turn of pre-load. How does the amount of pre-load affect your launch?

I'm looking for advise for use with a 3300# '69FB, 4-spd'd, 302, with new 5-leafs, 9204 Rancho's, 9" ET-Streets, 4.56 gears....

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Originally posted by Ryan Wilke:
...adjustment is everyone using?

The instructions say to use one turn of pre-load. How does the amount of pre-load affect your launch?

Thanks!!! Ryan

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Ryan, I spoke to Cal-trac about this very subject a couple of weeks ago and this is what he told me. Changing the amount of preload changes how quickly the suspension reacts. More preload equals quicker suspension reaction. Basically you can slow down the hit to the suspension with less preload(lets it roll out a little bit before reacting). It still hits it the same amount it just takes a little longer to happen with less preload.

With that said I'll hopefully be trying some different preload settings this Fri. at the track. I've changed from 4.11's to 4.56's and expect to have to make some adjustments for the new gears. I would really like to get my 60's in the 1.4's. My best so far is a 1.55. Maybe I can get enough runs in to play around with preload. I mainly want to try and loosen my shocks up some and see what happens. I had some clutch problems last time out and didn't get to play much. We won't get it to that . Lets just say a little loctite would do wonders on the pressure plate bolts.

Almost forgot, I've have mine set at one turn of preload now. Seems to be working pretty good.

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Alex Denysenko
Co-Administrator and Moderator/ non 65-66 Mustang owner sensitivity co-ordinator