Automotive Performance Catalog

These revisions were included in “2025 V1”, published 11.2024

• MLS Spartan & Vulcan Cut-Ring verbiage clarified
• Head Gasket Quick View Guide: RA stats clarified
• New Horizons: company info & timeline updated
• Audi · 5.2L V10 · Vulcan Cut-Ring & Pro-Copper added
• Audi R8 FSI V10 · Vulcan Cut-Ring added
• BMW S58 · Vulcan Cut-Ring added
• BMW B58 Gen1 & Gen 2 · Vulcan Cut-Ring: corrections & additions
• Chev Big Block · AJPE 481X: description corrected
• Chev Big Block · AJPE Exhaust: P/N added
• Chev Big Block Mark IV: port dimension correction
• Chev Small Block · LSX Symmetrical 19 series · Vulcan Cut-Ring: addition
• Chev Small Block · Gen 1 Exhaust: P/N added
• Chrysler Wedge & 426 Hemi · Valve Covers:  additions & corrections
• Ford FE · ICS: corrections
• Ford i4 Ecoboost, Duratec, Mazda L: applications & descriptions clarified
• Ford Small Block · Exhaust: P/N & drawing corrections
• Ford Small Block 36 series · Vulcan Cut-Ring: added
• Ford Small Block Windsor · Exhaust: P/N addition & correction
• Ford Windsor Small Block · BMP · P/N corrections
• Honda B Series · Pro-Copper/Titan/ICS: bore size correction 
• Honda K20/24 · Vulcan Cut-Ring & Pro-Copper HG added
• Lamborghini · 5.2L V10 · Vulcan Cut-Ring & Pro-Copper added
• Lamborghini · V12 · Pro-Copper HG: added
• Nissan RB25/RG26 · Vulcan Cut-Ring: corrections
• Nissan RB30 · Vulcan Cut-Ring: P/N added
• Pontiac V8 · ICS · P/N corrections
• Toyota Supra B58 · Vulcan Cut-Ring: corrections & additions
• Graph-Form Collector Gaskets added