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Push rod length is a crucial part of the engine build. You have to get the math right! Come along as Scott Foxwell, head engine builder at Straub Technologies, shows you how to measure for push rod length and set up good rocker geometry before you order your push rods. To put your order in today or if you have any questions, click the link below to visit our website. Link: http://bit.ly/1m0J9uW