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| | | | Joined: Oct 2013 Posts: 23 New Guy | | New Guy Joined: Oct 2013 Posts: 23 | Have a '53 chevy pickup that has a 10 bolt GM rear end out of a 68 firebird setting under the stock truck springs. Sets too high and the springs look too narrow for the spring perch/pads on the axle. Any thoughts on lowering 2 to 4 inches with out getting elaborate on the replacing the springs? | | | | | Joined: May 2006 Posts: 8,351 'Bolter | | 'Bolter Joined: May 2006 Posts: 8,351 | You might try mounting the axle over the springs, rather than under. That should drop it about the amount you're after. The original rearend was mounted that way, as well.
Bill Burmeister
| | | | | Joined: Oct 2013 Posts: 23 New Guy | | New Guy Joined: Oct 2013 Posts: 23 | I guess I miss spoke, the aprings are under the axle. | | | | | Joined: Nov 2005 Posts: 6,100 'Bolter | | 'Bolter Joined: Nov 2005 Posts: 6,100 | Hy fore's53, you could try putting lowering blocks between the axle and spring you could try different thicknesses until you get the look you want, hope that helps. | | | | | Joined: Oct 2013 Posts: 23 New Guy | | New Guy Joined: Oct 2013 Posts: 23 | are the Posies lowering springs a good option?
| | | | | Joined: Mar 2010 Posts: 10,298 Renaissance Man | | Renaissance Man Joined: Mar 2010 Posts: 10,298 | Lowering blocks are a lot easier and cheaper.
1952 5-window - return to "as built" condition | 1950 3100 with a 235 and a T-5 transmission
| | | | | Joined: Jul 2008 Posts: 1,262 Shop Shark | | Shop Shark Joined: Jul 2008 Posts: 1,262 | | | | | | Joined: Sep 2013 Posts: 93 Shop Shark | | Shop Shark Joined: Sep 2013 Posts: 93 | Please explain to me what a moderate lowering block has to do with scrub line?
The scrub line is measured from a constant, rim to ground surface?
Would love to understand this better.
Thx-
1947 GMC Truck 5 window, Long Bed
2008 Corvette Roadster
2008 Harley Davidson FXDL
2011 F150 Ecoboost 4X4
2015 Subaru Outback AWD
"only the strong survive"
| | | | | Joined: Feb 2007 Posts: 434 Shop Shark | | Shop Shark Joined: Feb 2007 Posts: 434 | Cthe,
scrub line would remain constant between rims and center pumpkin, but what Hotrod John is saying is that as rear moves "up" compared to frame, fenders, and other things that they can become lower than the scrub line that is defined by the rims. Now you have exceeded the scrub line and a flat tire can be significantly more damaging than just replacing a tire.
R-Bo
1959 Apache 1/2 ton Big Window, Short bed Fleetside (under reconstruction)
1966 GMC 305V6 in the family
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