How To Get More Torque From 540Ci Big Block Length
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Pushrod length is critical, but often overlooked. As Twedt says, “We check every engine we build to make sure that we have the exact valvetrain geometry and pushrod length. I used my adjustable pushrod tool from COMP, set it close to what it should be, and then adjusted it from there until I had the right pattern across the tip of the valve where the roller tip rides.” For this build we ended up needing 7.700-inch and 8.750-inch Lunati 4130 (0.080-inch wall) pushrods ($8.50 each). View Related Article
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