Call us today to order your Holley EFI Holley LS EFI Manifold - 2x4 Dual Plane - Black GM LS1/LS2/LS6!
Part # 300-121BK
- The dual-plane equal-distribution layout produces great mid-range torque without compromising top end power.
- Appropriate for any street/performance, muscle car, or street rod enthusiast
- Intended for use on all GM LS Gen III engines equipped with LS1/LS2 style cathedral port cylinder heads
- Power band from 1500-7000 rpm
- Carbureted and EFI versions available
- Cast aluminum construction
- The Holley GM LS1/LS2/LS6 2x4V dual-plane was designed in the tradition of the great dual Holley 4160 induction systems that competed on drag strips, in Trans-Am and at Lemans in the 1960s.
- Carb Flange Center-To-Center: 8-5/8
Holley EFI 2x4 Dual Plane Intake Manifold, LS Gen 3 LS1/LS2/LS6 engines
Vehicle information below is not a guaranty of fitment. If you have fitment concerns, please call prior to ordering.
1900
We are an authorized retailer for all Holley EFI products. The standard manufacturer warranty applies. If you ever have manufacturer warranty concerns or questions on products you purchased from us, we can help! We are a family owned and operated company that values all of our customers. We are here to assist with all future warranty concerns!
Warning: This product can expose you to chemicals, which is known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov