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Went to Thompson today and even though there was a steady headwind between 10-20 MPH DA was between 500-800 ft. which is pretty much unheard of around here. 1st run spun hard on the cold track and had a 1.71 60' 11.45 118.65.
2 passes later I loosened the air valve spring on the Q-Jet from 3/8 to 1/4 turn tight and ran a best ever 1.58 11.3097 118.21 with some wheelspin. It really liked the looser setting and launched harder on the next 3 passes spinning the tires with 1.59 11.34 117.9 1.61 11.36 118.21 1.63 11.40 117.73-spun hard Best ever 60' before was 1.63 dead hooking. Just loosening that spring 1/8 turn made a huge difference in the way the car felt coming off the line,it was hitting the tires much harder. I really wanted a 11.20 something but the track started to go away and the air worsened with storms moving in. I'm done for the year but it was a good way to go out.
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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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