Like stated before the weather conditions could have been different. Second, what are 60' times? It's sounds like they are pretty bad. You need to get some drag radials to see the benefit of the 4.10's. There probably won't be an improvement in your et's until you get some. Also, your car did put on 40,000 miles since last time.
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2005 GT, 5spd manual
Saleen S/C, 3.4 pulley, FRPP shorty headers, FRPP handling pack, uca/lca, pandhard bar,FRPP 4.10's. Performance by TPS MOTORSPORTS. 442WHP/435WTQ
12.10@111.7 1.64 60'
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