SKU: 93524938577

Holley Hi-Ram Lower Manifold - GM LT1 - 300-236

Sale price$449.98 Regular price$499.98
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Ships within 48 hours · Estimated delivery Aug 10 - Aug 15

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Description

Holley Hi-Ram Lower Manifold - GM LT1 - 300-236Overview: The new Holley EFI Hi Ram intake provides the ultimate performance with the new GM direct injected Gen V 6. 2L LT1 engine. The modular design of this manifold allows easy disassembly for custom porting, multiple tops, or custom induction systems. Each runner has a large radius where it meets the plenum, and optimized taper & cross sectional area to perform in a wide variety of engine configurations. The optional injector bosses on the intake

Overview:

The new Holley EFI Hi-Ram intake provides the ultimate performance with the new GM direct-injected Gen V 6.2L LT1 engine. The modular design of this manifold allows easy disassembly for custom porting, multiple tops, or custom induction systems. Each runner has a large radius where it meets the plenum, and optimized taper & cross-sectional area to perform in a wide variety of engine configurations. The optional injector bosses on the intake runners allow increased performance potential by using additional injectors along with the factory direct injection. When you look for the pinnacle of performance, price, and quality, look to Holley EFI.

Features:

  • Modular Design w/ Removable Top
  • Overall Height: 13.34” (w/ EFI Top - 95mm or 105mm) – See Drawing
  • A-B Height: 12.10” (w/ Carb Style Top - 2 x 4150 or 2 x 4500) – See Drawing
  • Height at Plenum Flange: 9.44”
  • Port Size: 2.06” High x 1.53” Wide
  • Runner Length: Approx. 6.5”
  • Large Plenum Volume of 549 Cubic Inches (w/ 1 x 95mm or 1 x 105mm Throttle Body Top)
  • Available With or Without Injector Ports in the Runners
  • Intakes w/ Injector Ports Include Fuel Rails w/ Dual Mounting (1.48” or 2.56” O-ring to O-ring injector length)
  • Fuel Rails are Anodized, Laser Etched, and Machined for 8AN O-Ring Fittings at Each End
  • Rear of Plenum Machined for MAP & 3 Vacuum Ports
  • Head Flange has Clearance for Fuel Supply to High Pressure Pump
  • Increased Runner Wall Thickness for Custom Porting at the Plenum to Runner Entry on Each Runner
  • O-Ring Seals at Cylinder Heads & Plenum Top
  • Easy Assembly w/ Top Mounted Screws on Plenum Top (all except front 2 screws)
  • Several Top Options: 1 x 95mm, 1 x 105mm, 2 x 4150, 2 x 4500, or Blank Flange for Custom Throttle Bodies
  • 3500-8000+ RPM Power Band

Application:

Year Make Model Submodel Engine Size
Universal

Specs:

Brand Holley EFI
Construction Cast
Emission Code 3
Engine GM Gen V LT1
Finish Satin
Manifold Type Hi-Ram
Product Type Intake Manifold
RPM Power Band 3500-8000+
Type of Component Lower Manifold
Warranty Limited 90 Day
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. 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
SKU: 93524938577

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4.8 ★★★★★
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Glenn
Cuba, US
★★★★★ 5
Great watch - Nice large display!!
After my old Timex Ironman finally died after 21 years of reliable service (may it rest in peace after 4 replacement bands and 5 replacement batteries!!), I decided Timex deserved another sale from me! So I went surfing on the Timex website. So many Timex Ironman watches to choose from! But this one stood out for two reasons. 1) It has a nice simple design without a lot of "noise". 2) A nice large readable display. So I took the plunge! Indeed, Timex has definitely improved on their Ironman watches in the last 21 years. Most notably, the Indiglo light has greatly improved. It used to just light up the background. Now, it brightly lights up the actual digits which makes it undeniably readable without any eye strain. Another great improvement are in the set features. While the older models could only be set forward (in other words, if you went past your set point, you would need to go all the way around), this model lets you set forward and backward (so if you go too far, you can step back without going around). I don't understand one of the reviewers saying that the watch is too small. The face is quite large. The band may seem narrow in proportion to the watch face, but not excessively so. The band is 19mm wide and fits me just fine. Highly recommended!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 12, 2017
R
Verified Purchase
RS
Draper, US
★★★★★ 5
Like it so far after 2 weeks of swimming.
Like it so far after 2 weeks of swimming. Have been careful nio to press buttons underwater. I Like the large numerals, backlight, countdown timer, stopwatch and alarm. My last Timex 1440 lasted 10 years before the battery was low enough that the backlight was too weak to see at night. I replaced the battery on it but did not seal the o ring well enough with silicon grease so it leaked and quit working. I also had also replaced the band once.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 9, 2024
A
Verified Purchase
Andrei
Birmingham, US
★★★★★ 5
Good product.
A very nice and comfortable watch. Display is easy to read (I have poor eyesight). The menu is simple and intuitive. Fast delivery to Israel.
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Reviewed in the United States on October 1, 2025
F
Verified Purchase
francisco
Alexandria, US
★★★★★ 5
Little Small On The Wrist
Really cool timepiece, been loving timex a lot recently, this is me coming over Casio/G-shocks. Although it is a bit smaller on the wrist it still looks very nice and I really love the gray and like green color contrast. Really easy to read the time as well.
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Reviewed in the United States on May 27, 2024
W
Verified Purchase
William D
Birmingham, US
★★★★★ 1
Sturdy and digital
This watch has “ fake screws” holding the band on . The band is actually held on by the usual pins holding it on most watches but weaker . The pin came off while I was putting it on for the first time! This is the second time I bought off Amazon in 2 weeks where the watch appeared to be sturdy and the pins fell off . Going back to military watches that have material straps that go completely around wrist and do not have pressure on pins
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Reviewed in the United States on May 8, 2026

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