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if the "weak springs" result in valve float then yes...but not as much as they would affect your et...since your usually not at very high rpm in the first 60 ft.
 

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Discussion Starter #3
thanks for the reply i use running @133 in 1/4 then the next week the car slowed dow to 128 and i lost 60ft. et and mph i checked everything but springs.
 

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Discussion Starter #5
i was getting 147 60ft. then it started getting worse with one changes 178 60ft. niw how do you explain that.
 
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