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Description
LS Hi-Ram EFI Manifold GM LS1/LS2/LS6 - 92MM Throttle BodyHolley LS Hi Ram EFI Manifold GM LS1 LS2 LS6 Holley EFI 2x4 Dual Plane Intake Manifold, LS Gen 3 LS1 LS2 LS6 engines, w Black Ceramic Coating Overview Holley EFI 2x4 Dual Plane Intake Manifold, LS Gen 3 LS1 LS2 LS6 engines All GM LS Gen 3 engines equipped with LS1 LS2 style cathedral port cylinder heads. NOTE: The EFI versions of the LS HI Ram intake manifold and fuel rail are designed to accept Bosch Style EV 1 or Magneti Marelli Pico fuel injectors.
Holley LS Hi-Ram EFI Manifold GM LS1/LS2/LS6Holley EFI 2x4 Dual Plane Intake Manifold, LS Gen 3 LS1/LS2/LS6 engines, w/Black Ceramic Coating
Overview
Holley EFI 2x4 Dual Plane Intake Manifold, LS Gen 3 LS1/LS2/LS6 engines
All GM LS Gen 3 engines equipped with LS1/LS2 style cathedral port cylinder heads. NOTE: The EFI versions of the LS HI-Ram intake manifold and fuel rail are designed to accept Bosch Style EV-1 or Magneti Marelli Pico fuel injectors. OE LS fuel injectors may not fit properly in the Hi-Ram EFI intake manifold fuel rail assembly. There is a kit available separately for the LS7 Hi-Ram EFI to allow the use of stock LS7 fuel injectors, P/N 300-230 (see below in the service parts section).
Features:
- Base Plenum Top Mounting Flange Height ???? 8.42??? to the lifter valley cover flange on engine block.
- Total Height with 92/102mm EFI Plenum Top ???? 12.32??? to the lifter valley cover flange on engine block.
- Port Size ???? 2.49??? Height x 1.21??? Wide
- Mounting Flange Gasket Type ???? Standard LS3 Molded O-Ring
- Plenum Top Gasket Type ???? 3/32??? Round O-ring Cord
- Throttle Body Flange Location, with 92mm EFI Plenum Top : Height ???? 8.42??? (from engine block lifter valley cover flange), Longitudinal Location ???? 3.84??? (forward from engine block front flange), Angle ???? 25 deg. (down from vertical)
- Runner Length ???? 6.58???, As-Cast Runner Cross-Sectional Area ???? Tapered 4.25 in?? to 2.53 in??
Details:
- Color: Silver
- Construction: Cast
- Engine: GM LS1/LS2/LS6
- Finish: Silver
- Flange Style: EFI
- Front Height: 12.32 inch
- Fuel System Type: EFI
- Manifold Type: Hi-Ram
- Rear Height: 11.00 inch
- Recommended Use: Forced Induction
- RPM Power Band: 3500-8000 RPM
- Warranty: Limited 90 Day
Links
300-122
Instruction Sheet
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.9 ★★★★★
Based on 5 reviews
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Product Reviews
★★★★★ 5
Worth it
Color: Lightgreen
My grandbabies love brushing their teeth like their parents!
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Reviewed in the United States on March 29, 2026
★★★★★ 4
Toothbrush is toddler size only
Color: Pink
This toothbrush is more for toddlers and not for school age children. The water flosser portion can be for older children
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Reviewed in the United States on January 22, 2026
★★★★★ 5
Worth the money!
Color: Lightgreen
Absolutely amazing product!
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Reviewed in the United States on March 13, 2026
★★★★★ 5
Perfect beginner set
Color: Lightgreen
Love this!!! The toothbrush heads are a little flimsy but overall really liked this for my 3 year old.
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Reviewed in the United States on February 23, 2026
★★★★★ 5
Super Cute, Fun, & Effective
Color: Lightgreen
This set of water flosser and electric toothbrush are just adorable! The shapes of them fit in the hands really comfortably, but also add to the cuteness as the shapes of the animals!
Yes, this is meant for kids - so the toothbrush heads are small (for little kids), and the water flosser doesn't spray terribly hard. BUT they're still very effective.
I especially like the water flosser. It can be taken into the bathtub/shower while bathing, so the spray doesn't end up going places we don't want water to go. It has a small tank of water, and I recommend using room temp water (rather than cold) so that it's comfortable on the gums and teeth. Also to note, the flosser doesn't work when it's sideways or upside-down - it needs to be held upright.
This set is so cute, easy to use, easy to re-charge, and very comfortable. It's also very good quality - a great purchase. I love it!
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Reviewed in the United States on March 17, 2026