Building a 10,000 RPM Jeep 4.0 - Street and Off-road cylinder heads

Rick Mudge was the engineer in charge of airflow development for AMC/JEEP/ CHRYSLER engineering from 1976 to 2001 and developed the 4.0L jeep cylinder heads intake and exhaust manifolds through those years.


Rick developed a 4.0L JEEP engine for drag racing in the NHRA Competition Eliminator class. His engine set the ¼ mile national record in 1996 at an 8.60ET/ with the best speed of 150.90 MPH spinning 9000 RPM through the traps.  This engine was built with a combination of stock and heavily modified production and racing parts. Through this multi-part series, we’ll learn who Rick is, his work, and his formula for building a 10,000 RPM 4-liter Jeep.


I’ll warn you that the audio quality is only as good as Rick’s flip phone would allow, this wasn’t recorded in a studio, and I’ve done the best I could to clean up and mask the poor-quality recording.


In this episode, Rick tells us what to look for in a street and offroad cylinder head, port modifications, and flow considerations.


Follow builds in the hunt for 4.0 peak power at:


XJ - Experimental Jeep -
www.facebook.com/groups/amxxj/
Insta: @amx_xj


Boosted 4.0 Owners Club -  
Facebook: boosted4point0s
Insta: @akaxauto @johnsharkey


Alpine Precision -
Facebook: alpinepeakprecision
@alpinepeakprecision