Re: Re: New diffy for '47-'53 Chevy closed driveli

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Posted by Raymond Gallant on August 03, 2005 at 17:32:20 from (142.167.62.108):

In Reply to: Re: New diffy for '47-'53 Chevy closed driveline.. posted by John McPherson on August 02, 2005 at 20:58:47:

On my springs, the location of the centerbolt is the strongest part of the spring. I am using a set of monoleaf springs and the spring leaf thickness at the centerbolt is a beefy 3/4" tapering down to a tad thicker than 5/16" at the spring eyes.

If the offset dimension turns out to be 1 1/2" as stated in the Tech Info pages of the Classic Performance catalog, then both centerbolts would be sandwiched under the spring pad and the springs (clamped down by the U-bolts). That's why I'm trying to find out which measurement is the right one? 1 1/2" OR 2 1/8"?

To allay your other fear of catastrophic pole vaulting, all I'd have to do is mount the new spring backwards because in my answer to Joe(TX) above, I realized that if I reverse the springs front to back (that is, left side spring on right and vice-versa) it would move the original centerbolt to the back of the spring pad.

There is another part I must explain about my solution. It's a plate, the width of the spring, with a hole at one end to accept the head of the spring's centerbolt and further back, another hole with a centerbolt welded in (professionally) to key in the new differential in its proper location. Once this plate is in place over the existing spring centerbolt, the new differential keyed in onto the welded centerbolt and the u-bolts torqued down, nothing would be going anywhere but up or down.

Anyway, my original question... 1 1/2" vs 2 1/8" still goes unanswered.

Thanks for your input, your comments do not fall on deaf ears.

Raymond Gallant

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