Roller Cam Specs for 340

273 said

Gearing & Stall, what you got or more importantly what your willing to run makes a big difference, what kind of driveability you require, how you gonna use this car etc..

It don't seem you really need a roller, a solid flat tapped probably will do.

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Why wouldnt it seem like a need a roller? What's the biggest difference between running rollers or flat tappets? I wanted to go a roller route because I have heard a lot about the difficulty and anxieties around breaking in flat tappets. Is there really anything to worry about when breaking in flat tappets in your opinion?