When did the Truett and Osborn flywheels come out?
Big Twin flywheels from 1939-1999 are available in two different styles (TorqueMonster Weight & Lighter Weight). The TorqueMonster flywheels are direct replacement weight (heavy) for years 1930-1981. The left side flywheel is much wider and heavier than the right side.
When did Truett and Osborn start using torquemonster?
Late Shovelheads and Evolutions from 1982-1999 the Lighter weight would be the direct replacement weight. TorqueMonster weight is available for these models as an option to increase low-end torque in Evos. YEAR/MODEL FITMENT
How are the valves held open in the Truett and Osborn cycle?
Depending on the dimensions of these lobes, the valves will be held open a lesser or greater distance, for a greater or lesser amount of time. The amount the cam’s lobes move the pushrods is called “lift”, and the length of time the valves are held open is called “duration.”
How can detonation be cured in a Truett and Osborn cycle?
Detonation can be cured by running the correct high octane fuel, reducing the compression ratio, adjusting for richer carburation, using cooler plugs, increasing the cam duration, adjusting timing, or a combination of these methods. Using a high lift cam with a stock or lower displacement engine may be an exercise in futility.
Big Twin flywheels from 1939-1999 are available in two different styles (TorqueMonster Weight & Lighter Weight). The TorqueMonster flywheels are direct replacement weight (heavy) for years 1930-1981. The left side flywheel is much wider and heavier than the right side.
Late Shovelheads and Evolutions from 1982-1999 the Lighter weight would be the direct replacement weight. TorqueMonster weight is available for these models as an option to increase low-end torque in Evos. YEAR/MODEL FITMENT
Depending on the dimensions of these lobes, the valves will be held open a lesser or greater distance, for a greater or lesser amount of time. The amount the cam’s lobes move the pushrods is called “lift”, and the length of time the valves are held open is called “duration.”
Which is the best Cam for a Truett and Osborn cycle?
If you have high-lift springs, and your valves have been properly clearanced, you can run a more aggressive cam like the Andrews C grind. This cam is about as tall as you can get, but you pay a price in more frequent repairs.