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Tech Bulletin - PAC Racing Springs

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KB513105-PAC Engineering Lab

Retainer Pull Test: Stock LS Retainer vs. PAC Retainers


KB513104-Jason Youd and Doug MacIsaac

Comparing actual frequency measurements of three types of outer valve springs impacted and measured for spring Natural Frequency.


KB513103-Jason Youd lecture at AETC:

Understanding Valve Spring Science and Selection, for Optimization, Performance, and Longevity.


KB513102-Jason Youd lecture at AETC: 

Understanding valve spring science, selection and optimization for best performance and longevity.


KB513101-Jason Youd write-up:

300 Series Pro-Fabricator Sway Bar Arm Assembly 



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