High Performance Engine Theory, binder
Dema Elgin, not sure if it is still being printed, will talk to Dema

Engineer to Win
Carroll Smith
Book is on material technology, metallurgy, etc.

Internal Combustion Engines
Lester Lichty, McGraw Hill, 1939. Multiple revision.
Mechanical engineering textbook. Out of print but you may be able to find it at used book stores or online auctions.

The High Speed Internal Combustion Engine
Sir Harry Ricardo
Out of print. Considered the bible of piston engines. If you can find an original copy, buy it!

Performance Tuning in Theory and Practice
A. Graham Bell
Haynes Books

Forced Induction Performance Tuning
A. Graham Bell
Haynes Books

Advanced Engine Technology
Heinz Heisler
SAE Press

Gasoline-Engine Management
Bosch, SAE Press Bosch puts out a new edition every year, a must have.

High-Speed Combustion Engines
P.M. Heldt
Out of print, may be able to find at used book stores or online

Engine Service, Automotive Machining and Engine Repair
Gary Lewis
Available in the bookstore

Engine Repair
Bob Barkhouse
McKnight Publishing
May be out of print, find used online

Automotive Math Handbook
Forbes Aird
MBI Publishing Company

Auto Math Handbook
John Lawlor
HP Books

Maximum Boost
Corky Bell
Bentley Publishers

Air Cooled Automotive Engines
Julius Mackerle
Out of print