A key to making the large carb work on the small-displacement engine without bogging is the secondary linkage. Those familiar with Holleys will notice the huge linkage for the secondaries--TMP makes this in-house. By delaying the opening of the secondary plates (through custom linkage cams and custom-engineered secondary linkage elements), the engine is able to accept the additional air and fuel being fed to it. Without the custom parts, this carb would open too quickly and cause a stumble. By fine-tuning the carb in this manner, Nelson hopes to take advantage of the large cfm capacity of the TMP design.