- CYLINDER HEADS - SOLD OUT
- 23" DODGE PLYMOUTH 218 230 GEN II EDGY HEAD - FREE DOMESTIC SHIPPING
23" DODGE PLYMOUTH 218 230 GEN II EDGY HEAD - FREE DOMESTIC SHIPPING
- PLEASE NOTE. THIS RUN OF HEADS WILL NOT BE SHIPPED UNTIL LATE-2023 or EARLY 2024!
FREE DOMESTIC SHIPPING (lower 48 only). NO INTERNATIONAL SHIPPING without prior approval written approval and additional shipping fees. IT HAS BECOME DIFFICULT AND COST PROHIBITIVE TO SHIP OUTSIDE OF THE US.
EDGY cylinder head for your Dodge or Plymouth 23" L-head six cylinder engine. These high-quality Gen II EDGY heads are cast in the USA from A356-T6 aluminum, heat treated to T-6, shot peened, and meticulously CNC machined in Winnett, Montana by students of the SKILLS USA high school shop program.
Please check your application, but this should fit 1934 to 1959 Dodge and '35 and up Plymouth 190, 201, 218, & 230 US built engines with 23" head. The casting does have the provision of the water bypass, but you will be responsible for drilling the one small hole (instructions are included), which is a very simple procedure.
Back by popular demand, these are the only modern, tried, and tested high compression cylinder head available for L-head Mopar sixes. These 74cc heads raise the compression ratio of your engine to approximately 9.0:1 and provide an instant, noticeable horsepower increase. This Gen II head, while based on the original EDGY head, has had numerous improvements; including increased coolant circulation, redesigned core pattern, improved metallurgy, higher quality control, CNC machining, and other features.
Please note that if your engine is tired & worn it will also increase stress and blow-by!
Additional recommendations (not necessary) are-
Our "Boy Racer reground" camshaft. See ordering instructions on the camshafts tab.
Headers or split exhaust with 2.5" single exhaust pipe and low restriction muffler.
Pertronix ignition and/or MSD ignition.
Addition of overdrive or numerically lower rear axle gearing.
This is identical to the head that won the 2019 Peking to Paris Endurance Rally!
Over 140 sold with 100% positive feedback.
We have achieved 150 RWHP drama-free (a 50+% increase) on our professionally built engines with the above modifications, on regular pump gas, while achieving 18-20 MPG.
*THIS DOES NOT INCLUDE A HEAD GASKET. WE RECOMMEND FEL-PRO HS7564C
*THIS HEAD MAY REQUIRE YOU TO USE A NON-STOCK WATER NECK, MODIFY YOUR THROTTLE LINKAGE, OR OTHER MODIFICATIONS.
*ARP STUDS ARE RECOMMENDED.
*PLEASE STRICTLY FOLLOW OUR INSTALLATION AND RE-TORQUING INSTRUCTIONS ON OUR TECH FAQ PAGE.
*THERE IS SUFFICIENT MATERIAL FOR ADDITIONAL COMPRESSION BUT YOU WILL NEED TO POCKET THE CHAMBER AREA TO AVOID VALVE CONTACT.