Since we're talking about using boilers with the Steam Dynamos, CJ just tweeted an update to Railcraft. One of the changes? Fuel values.
CHANGE: Fuel adjustments: Blaze Rods 800->1000, Coal 3200->1600, Coke 6400->3200, Coke Block 57600->28800 (fixes Short overflow issues with furnaces).
Slight...