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Description
Mid-Rise Plenum Base Adapter Kit - GM LS1/LS2/LS6 - Black 300-267BKMid Rise Plenum Base Adapter Kit GM LS1 LS2 LS6 Black For use with LS Dual Plane Mid Rise intake manifold base to adapt to modular tops. NOTES: Holley EFI LS main harnesses have a map sensor connecter designed for use with an LS1 2 style map sensor. The 558 416 is an adapter harness that can be used to adapt any LS harness that uses a LS1 2 MAP sensor connection to a LS3 MAP, which is recommended for this manifold. Features: Provides great performance
Mid-Rise Plenum Base Adapter Kit - GM LS1/LS2/LS6 - Black
For use with LS Dual Plane Mid-Rise intake manifold base to adapt to modular tops.
NOTES: Holley EFI LS main harnesses have a map sensor connecter designed for use with an LS1/2 style map sensor. The 558-416 is an adapter harness that can be used to adapt any LS harness that uses a LS1/2 MAP sensor connection to a LS3 MAP, which is recommended for this manifold.
Features:
- Provides great performance to 6500 rpm for street/strip performance applications while providing the look of a racing EFI intake manifold
- Unique modular design allows the combination of a traditional dual-plane layout with an EFI manifold plenum to produce great mid-range torque without compromising top end power
- Great for supercharged or turbocharged engines
- Power band from 1500-6500 rpm
- May require an aftermarket hood for some vehicle applications.
- Cast aluminum construction
- Intended for use on all GM LS Gen III or IV engines equipped with LS1/LS2/LS6 style cathedral port cylinder heads (recalibration of the ECU may be required when using this intake manifold design with OE ECU).
- Black Ceramic Coating for an aggresive look in your engine compartment
Specs:
| Brand | Holley |
|---|---|
| Emission Code | 3 |
| Engine | GM LS1/LS2/LS6 |
| Finish | Black |
| Grade Type | Performance |
| Manifold Color | Black |
| Manifold Material | Aluminum |
| Manifold Mount Hole Quantity | 12 |
| Product Type | Intake Manifold |
| Type of Component | Manifold Top |
| Warranty | Limited 90 Day |
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4.4 ★★★★★
Based on 11 reviews
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Product Reviews
★★★★★ 5
Whew, hold onto your hat for this ride!
Format: Kindle
Robert Monroe is the ultimate explorer. His self-honesty, rigorous documentation of his OBEs, and his insatiable curiosity are beyond the beyond.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 19, 2025
★★★★★ 5
Muy buena lectura
Format: Paperback
Excelente,recibido y buen precio.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 26, 2026
★★★★★ 5
A mind bender.
Format: Paperback
Robert Monroe's story is such a remarkable one that for me it took a few years of pondering and re-reading various accounts of his "journeys" to come to grips with it as a legitimate reality. Since the early 1960's, Monroe carefully logged many hundreds or thousands of out of body experiences and over the years mastered exit techniques and went on to teach them to many students at his institute in Virginia.
Far Journeys is a wild ride and was at times difficult to follow due to the many terms RM coined to describe the completely unknown entities and experiences that became routine for him. Once you get accustomed to the vocabulary, the narrative becomes more intelligible. The book is really something of a travelogue to non-physical reality. He is not stopping along the way to explain things to us readers, but leaving the experiences to speak for themselves. In the end, one is left to grapple with the implications of all he is laying out. Is he just completely insane? I don't think that is the case. Monroe was, in my view, a true modern mystic, born into a highly academic and rational Western world. He brought all of his pragmatism and mechanistic views on the world to bear as he wrestled with his remarkable gifts. He is really the heir to Edgar Casey, and in turn any number of mystics from antiquity.
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Reviewed in the United States on January 8, 2014
★★★★★ 4
Well written, entertaining - whether this stuff is true or not depends on your opinion.
Format: Paperback
I loved Monroe's first book. *This* book is entertaining, although annoying at times trying to figure out who's talking. I'm silent on whether I believe Monroe's fantastic stories. But if you're okay with that risk, I'd recommend this for both entertainment & perhaps to help unleash some creativity in your self.
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Reviewed in the United States on August 27, 2024
★★★★★ 5
Changed forever
Format: Kindle
We become so mired in our subjective “reality”. I find it truly beneficial to have a different, perhaps more objective perspective. I hope this enables me to make necessary changes to my journey before its conclusion.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 30, 2025
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