I tried a set of QA-1’s with 550 lb springs for a short time and didn’t care for them. You have to run a stiff spring with a heavy car to keep the front end off of the ground and they limited front end travel compared to a stock spring/shock. The ride was too harsh for me no matter how they were adjusted and it didn’t transfer weight as well with the short stiff spring. My car is mostly straight line though so they may work better in a different application.
I hear the Vikings ride better and are a little less expensive. Their adjustment is suppose to be more sensitive also. I know someone with a 69 Chevelle that switched to the Vikings from the QA-1’s and likes them much better.
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68 GTO,3860#
Stock Original 400/M-20 Muncie,3.55’s
13.86 @ 100
Old combo:
462 10.75 CR,,SD 330CFM Round Port E's,Old Faithful cam,Jim Hand Continental,3.42's.
1968 Pontiac GTO : 11.114 @ 120.130 MPH
New combo:
517 MR-1,10.8 CR,SD 350CFM E's,QFT 950/Northwind,246/252 HR,9.5” 4000 stall,3.42's
636HP/654TQ
1.452 10.603 @ 125.09
http://www.dragtimes.com/Pontiac-GTO...lip-31594.html
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