AERA Engine Builders Association

10/16/2026

This year’s engine build for PRI 2026 is a Chevrolet 427 LS3 built by Jeff Baldwin, owner of Baldwin Racing Engines in Friedheim, Missouri.

The RaceTec pistons part # 103150 feature an inverted dome design with a 7.5cc dish and a 1.105 compression height, helping achieve the desired compression ratio.

We would like to thank the crew at RaceTec Pistons for all of your help on this project.

If you would like more information on the engine or to purchase a ticket to win, go to: https://aera.org/eref-engine/

10/15/2026

AERA is dedicated to keeping engine professionals informed. Check out our latest insights on connecting rod bolt torque for Caterpillar C175 engines and head gasket selection for Nissan YD25 engines. Plus, don't miss your chance to save 20% on engine bags and tubing! Join us at the Engine Professional Industry Conference for expert sessions and networking opportunities. Follow the link below to view the full technical bulletins and more:
https://conta.cc/4dFx2Bl

Email from AERA Images not loading? View online Connecting Rod Bolt Torque Caution for Caterpillar C175 Engines The AERA Technical Committee provides the following caution regarding connecting rod bol

10/14/2026

When you're making big horsepower like our Chevrolet 427 LS3 engine, you need race-tested engine bearings. These ACL Race Series Bearings bring durability, precision engineering, and state-of-the-art metallurgy to our build. We used main bearing part # 5M7298HX-STD and rod bearing part # 8B663H-STD

Thanks to the folks over at ACL Race Series Bearings for all of your help!

The EREF Engine Giveaway is a fundraiser to benefit EREF. All proceeds go directly to the scholarship and grant program. Take a chance to win this engine and thank you for helping our efforts to train and educate engine machinists.

See the engine and buy tickets at the PRI show, AERA Booth #5249.

Sold in packs of 5 tickets for $20 – all proceeds benefit EREF!

For more information about the engine or to purchase tickets online, go to aera.org/eref-engine.

10/13/2026

El Comité Técnico de la AERA ha detectado un problema de porosidad en los bloques de motor Cummins de 4,5 L y 6,7 L. Esto puede provocar la mezcla de aceite y refrigerante, lo que deriva en un fallo del motor. Es fundamental que los mecánicos inspeccionen estos bloques y utilicen las herramientas adecuadas para evitar daños futuros. ¡Consulte los boletines completos en el siguiente enlace para mantenerse informado y tener su taller al día!
https://conta.cc/4yl7FMv

Email from AERA   Problema de Porosidad en el Bloque de Cilindros Cummins 4.5L y 6.7L El Comité Técnico de AERA ofrece la siguiente información sobre problemas de porosidad en el bloque de cilindros C

10/13/2026

Check out this weeks article on the Cummins ISX engine platform. Steve Scott gives a good look at some tips to save the day.

Go to: https://engineprofessional.com/magazine/rebuilding-the-isx-x15/

10/12/2026

The crankshaft for this years EREF LS 427 engine build is S**T Enterprises part # 4-LS1-4000-6125-58-S. The connecting rods are part # 2-350-6125-2100

The forged crankshaft is shot peened, heat treated, and micro-polished to provide exceptional strength, durability, and precise tolerance control. The crank features a 4.000" stroke, 2.100" rod journal, and 2.559" main journal. At the rear of the crankshaft is a 58-tooth reluctor wheel which provides the signal required by the crank sensor. The Pro Sport H-Beam connecting rods measure 6.125" center to center creating an ideal combination with the 4.000" stroke crankshaft.

We can't thank our friends at S**T Crankshafts enough for their help on this project. Make sure to check them out in booth # 1135 at the PRI show in December.

To purchase a ticket to win this engine, go to: https://aera.org/eref-engine/

10/09/2026

Last nights boat cruise and Day 2 of the 2026 Rottler Open House didn’t disappoint. Jim Dettore of FAS is a failure analysis expert in large diesel engine applications. His presentation was first class!

Thank you to the crew at Rottler Manufacturing for all your hospitality.

10/08/2026

Discover essential tips on machining the DD15 flywheel, selecting head gaskets for Ford engines, and rebuilding ISX/X15 engines in our latest update. Plus, don’t miss out on 20% off engine bags and the chance to join us at the Engine Professional Industry Conference on December 9! Early bird registration ends Oct. 15. Follow the link below to view the full tech bulletins and more:
https://conta.cc/4ehu4mz

Email from AERA Images not loading? View online Machining the Detroit Diesel DD15 Gen V Flywheel The AERA Technical Committee offers the following information on machining the flywheel for the Detroit

10/08/2026

It’s a great turnout today at the 2026 Rottler Open House. The crew from AERA are in attendance, make sure to stop and say hi.

10/08/2026

This year’s engine build for PRI 2026 is a Chevrolet 427 LS3 built by Jeff Baldwin, owner of Baldwin Racing Engines in Friedheim, Missouri.

A huge THANK-YOU goes out to Dart Machinery who provided us with their LS Next GEN III block, part # 31837211. It features a 4.125" bore, 9.240" deck height, full main webbing for extra strength, and extra-thick cylinder bores for high horsepower applications.

We couldn't have done this project without you.

The EREF Engine Giveaway is a direct fundraiser to benefit EREF. All proceeds go directly to the scholarship and grant program. Take a chance to win a custom engine while helping our efforts to train and educate engine machinists.

Includes FREE SHIPPING​ within the continental U.S. to transport the engine from the Indiana Convention Center. The winning ticket will be drawn on the final day of the PRI show. Need not be present to win.

To purchase a ticket go to: https://aera.org/eref-engine/

Tickets 5 for $20 – all proceeds benefit EREF!