Old 08-16-2019, 08:48 PM
Chiefkey Chiefkey is offline
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Join Date: Nov 2013
Location: Lake Orion, MI
Posts: 127
Default Suspension Advice in July-August Newsletter

Was reading the July-August newsletter and came across a suggestion regarding improving the rear suspension on the 63's. It said to install a 3/4" aluminum spacer between the differential and the subframe to improve the suspension geometry. Just a little fuzzy as to exactly where to put the spacer block. Between the crossmember and the body ? Between the differential case and the short crossmember that bolts to the trans mounts ? One way moves everything downward and the other just moves the transaxle, but will affect the spring compression height and swing arm angle. Just wondering.
Old 08-16-2019, 09:07 PM
mechanickeith's Avatar
mechanickeith mechanickeith is offline
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Join Date: Dec 2002
Location: Phoenix, Az
Posts: 5,700

Sorry for the confusion. This was supposed to be mainly for the 61-62 cars to improve the handling in hard fast turns. It will help the 63's a bit but not much as most of the 61-62 handling issues were corrected with the 63 model year.. The spacer should be bolted in between the top of the differential & the cross member it hangs off of. What this does is drop's the entire transaxle down & tilts the top of the rear tires in at the top a little. That way when you do a quicker turn, the rear tires don't tuck under as much & more rubber stays in contact with the roadway.
Keith Collier
61-63 Pontiac Tempest
Tech advisor

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