
This product is no longer available. Please call customer service for assistance at 1-800-345-4545.
- RPM XT Cylinder Head
- SB Chevy LS1/LS2
- 65cc Chamber Volume
- 212cc Intake Port Volume
- 76cc Exhaust Port Volume
- 2.02" Intake Valve Diameter
- 1.57" Exhaust Valve Diameter
- 1.30" Diameter Valve Spring
- Sold individually
Designed for 1997 & later GEN 3 & 4 LS1/LS2 Chevy engines including 4.8L, 5.3L, 5.7L & 6.0L. All E-CNC heads feature fully CNC'd intake ports, combustion chambers and exhaust ports for improved air-flow. Dyno tests proved these heads are capable of 457 hp & 438 ft-lbs. of torque. High-quality conical beehive springs are secured with steel retainers and valve locks for performance up to .600" valve lift. Match with any one of Edelbrock's LS series intake manifolds and camshafts for a dyno-proven performance combination. Rocker bolt kit #8597 includes 8 rocker bolts that are shorter than stock to prevent the bolts from protruding into the intake ports. E-CNC 215 head is 50-state street legal.. Made in USA.Specs:
- Deck Thickness: 5/8"
- Recommended Pushrod Diameter: 5/16"
- Maximum Valve Lift: .600"
Since founder Vic Edelbrock Sr. began building performance intake manifolds in 1938, Edelbrock has grown into one of the most trusted names in American high-performance parts, from carburetors and intake manifolds to cylinder heads, crate engines, and EFI systems. JEGS has spent decades supplying Edelbrock components to racers, engine builders, and street enthusiasts, backing this extensive lineup with in-house technical support, fast shipping, and a Price Match Guarantee so you can choose proven Edelbrock parts with confidence.
For the ultimate performance, Xtreme heads are CNC ported for added hp and torque over standard Performer & Performer RPM models.
RPM Xtreme cylinder heads give you the best combination of as-cast port design and custom CNC technology by blending the affordability of as-cast ports with custom CNC porting in the critical areas (combustion chambers, intake entry, exhaust exit and intake/exhaust bowls) for improved air flow and overall performance. This proven combination provides you with a powerful cylinder head at a lower cost than a typical fully CNC'd cylinder head.
Edelbrock Xtreme heads are ideal for high-performance street and entry-level race applications. These heads are sold complete (unless noted) with high-quality springs, stainless steel valves and have heli-coil inserts installed in the exhaust flange and rocker stud bosses. Made In The USA.


![134-3610 Professional Series Head Bolt Kit Small Block Chevy Gen III/LS Series [2004 & Later]](https://www.jegs.com/images/mini_200/0/070/070-134-3610.jpg)
![134-3609 Professional Series Head Bolt Kit for Gen III/LS Series Small Block Chevy [2003 & Earlier]](https://www.jegs.com/images/mini_200/0/070/070-134-3609.jpg)




![Valve Spring Compressor [Stud Mount]](https://www.jegs.com/images/mini_200/500/555/555-80518.jpg)

![Valve Spring Compressor [Stud Mount]](https://www.jegs.com/images/mini_200/500/555/555-80521.jpg)