PAC Racing’s Modern Muscle Valve Springs are comprised of several different valve spring series that provide fitment for Chrysler Gen III Hemi 5.7L, 6.1L, 6.4L, and Chrysler SRT-10 Viper applications. While valve springs are grouped by application here, more information can be found on their spring series page or individual product page.
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Top 0.630 in. / Bottom 0.805 in. ID – Top 1.035 in. / Bottom 1.210 in. OD – 1.800 in. installed Height – 0.600 in. Max Valve Lift
Top 0.630 in. / Bottom 0.805 in. ID – Top 1.035 in. / Bottom 1.210 in. OD – 1.800 in. installed Height – 0.600 in. Max Valve Lift
Top 0.680 in. / Bottom 0.845 in. ID – Top 1.085 in. / Bottom 1.250 in. OD – 1.750 in. installed Height – 0.600 in. Max Valve Lift
Top 0.680 in. / Bottom 0.845 in. ID – Top 1.085 in. / Bottom 1.250 in. OD – 1.750 in. installed Height – 0.600 in. Max Valve Lift
Top 0.650 in. / Bottom 0.900 in. ID – Top 1.095 in. / Bottom 1.345 in. OD – 2.050 in. installed Height – 0.650 in. Max Valve Lift
Top 0.650 in. / Bottom 0.900 in. ID – Top 1.095 in. / Bottom 1.345 in. OD – 2.050 in. installed Height – 0.650 in. Max Valve Lift
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