HP & TQ difference between 10.1 comp to 11.1 comp?

moparmatt19 said

Kinda a general question on the HP and TQ gain from 10.1 comp to 11.1 comp. How much will it really gain? Based on Iron headed sb.

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Generally,

In a Medium-Performance Small Block, putting out 275 HP at the Flywheel.

By going from 10.0-1 to 11.0-1 {an increase in 1.0 Compression}, you will improve
the Thermal Efficiency and gain generally 3.6% to 4% in Horsepower.

Approximately 11 Horsepower.

Torque will be increased by 5%.