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Return to Parts List Category : E- Big Block (Raised Deck) HUG PUSHRODCHART MAX RECOMMENDED LOAD CHART FOR PUSHRODS $0.00 Pushrod Max Recommended Load * Tube Material Heat Treat ? Max Recommended load** 5/16" 0.049" Wall No 400 pounds 5/16" 0.049" Wall Yes 500 pounds 5/16" 0.083" Wall Yes 750 pounds 3/8" 0.049" Wall No 400+ pounds 3/8" 0.049" Wall Yes 500+ pounds 3/8" 0.065" Wall Yes 750 pounds 3/8" 0.083" Wall Yes 900 pounds * General recommend max open valvespring load for a 9-inch pushrod. Subtract 100 pounds capacity for every 1 inch over 9 inches effective length. Add 100 pounds capacity for every 1 inch shorter than 9 inches. **Maximum valvespring open load