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Description
Holley Hi-Ram EFI Intake Manifold Kit - Big Block Chevy 300-963Hi Ram intake manifold with 105mm LS GenIV type throttle body flange type plenum top. A 10AN fuel rail kit is included. Holley Hi Ram EFI intake manifolds are now available for 1965 & later 396 502+ MKIV MKVI Big Block Chevy engines with standard intake flange rectangle port cylinder heads. Traditional Big Block Chevy engines can now also be fitted with the Holley Brand Hi Ram type EFI intake manifolds that have so well served GM LS & LT, Gen 3 Hemi,
Hi-Ram intake manifold with 105mm LS GenIV type throttle body flange type plenum top. A -10AN fuel rail kit is included.
Holley Hi-Ram EFI intake manifolds are now available for 1965 & later 396-502+ MKIV-MKVI Big Block Chevy engines with standard intake flange rectangle-port cylinder heads. Traditional Big Block Chevy engines can now also be fitted with the Holley Brand Hi-Ram type EFI intake manifolds that have so well served GM LS & LT, Gen 3 Hemi, SBF Ford, and Ford Coyote engine platforms. The iconic Chevy SBC & BBC platforms are primed for 21st century induction systems, Holley EFI engine management, and Holley fuel systems.
Features:
- The Big Block Chevy Hi-Ram manifold is available in either a traditional Hi-Ram 105mm plenum top or with a 2 x 4150 4-barrel throttle body plenum top options
- Hi-Ram intake manifolds are a cost-effective alternative to fabricated sheet-metal or billet manifolds for high-performance applications where induction system height is not limited
- 300-961, 300-963, and 300-964 are designed for 1965 & later 396-502+ MKIV-MKVI standard 9.80? deck height Big Block Chevy engines with standard intake flange rectangle-port cylinder heads.
- Uses drive by wire or cable actuated GM Gen IV LS 4-bolt throttle bodies
- MAP sensor port is for a GM Gen IV LS MAP sensor, manifold also has provisions for (1) 1/8 NPT, (1) 1/4 NPT, (1) 3/8 NPT fittings to the plenum
- The coolant outlet is a standard Chevy thermostat housing flange. and (2) 1/2 NPT and (1) 3/8 NPT coolant ports are provided.
- Power Band: 1500-8000 RPM
- Black anodized EFI fuel rails are machined for -10AN O-ring fittings and come included with these EFI Hi-Ram kits.
- Plenum Top Gasket Type ? 3/32? Round O-ring Cord
- Cast 356-T6 Aluminum Construction, Natural, Satin As-Cast Aluminum Finish
- Requires the use of early type GM or small cap MSD or Holley Distributors. Not compatible with HEI distributors
- 2.40? tall x 1.60? wide port flange openings, uses Mr. Gasket intake manifold gasket #5817
- Throttle Cable Bracket is supplied in the kit
Specs:
| Basic Operating RPM Range | 1500-8000 |
|---|---|
| Brand | Holley |
| Carburetor Studs Included | No |
| Category | Intake Manifolds |
| Color | Natural |
| Construction | Cast |
| Cylinder Head Port Shape | Rectangle |
| EGR Port | No |
| Emission Code | 3 |
| Engine | Chevy Big Block V8 |
| Finish | Natural Cast |
| Fuel Injectors Included | No |
| Fuel Rail(s) Included | Yes |
| Fuel System Type | EFI |
| Gasket Or Seal Included | Yes |
| Grade Type | Performance |
| Intake Port Gasket(s) Included | No |
| Manifold Type | Hi-Ram |
| Material | Aluminum |
| Nitrous Bung(s) Included | No |
| Plenum Finish | Natural |
| Product Type | Intake Manifold |
| Removable Runners | No |
| Removable Top/Lid | Yes |
| RPM Power Band | 1500-8000 |
| Single Or Dual Plane Type | Single Plane |
| Throttle Body Bore Diameter | 105 |
| Throttle Body Included | No |
| Throttle Bore | 105 |
| Warning | California Proposition 65 |
| 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:
- 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
4.7 ★★★★★
Based on 5 reviews
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Product Reviews
★★★★★ 5
Total Game Changer for Your Desk Space!
Color: Black, Color: Black
I decided to finally foray into the desk mat space, and my only regret is not doing this sooner. This particular mat is not only an instant upgrade, visually, for my desk, but also gives me a convenient place to tuck away those couple papers/cards I always need to have within reach.
It goes without saying, my favorite part of this is the high quality wireless charging piece. Aside from eliminating an extra cord, it helps minimize the clutter and lets me charge my phone AND AirPods simultaneously.
This is the first of many I will be purchasing, as it is the PERFECT gift for anyone with a desk.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 10, 2026
★★★★★ 4
Honestly, this is pretty nice!
Color: Black, Color: Black
At first I was a little disappointed in the design of this device because the mat and the charger are two separate pieces; but the magnet that is connecting them together is pretty strong, so I ended up not minding it. The magnet in the charger is pretty strong too, though, so the whole thing tends to lift up when you pick up your phone - this is my first MagSafe charger, so perhaps that is standard with these, I wouldn't know.
As you can see in the picture, this isn't your standard mouse pad. It's leather on one side and felt on the other (you can pick which side you want to face up, which is a nice design feature, I suppose). It's smooth and wipes off easily but really collects fingerprints and hairs.
It's also a good size. Not too big, not too small. I was a little worried because it's smaller than my older mousepad but I haven't suffered for it. I may even prefer this smaller size if I'm being honest.
I'm not sure if I like the feeling of the leather side against my arm/wrist, though. The mouse has no problem reading it but it's just not very soft. I do notoriously dislike change though so maybe that's just a me problem LOL.
All in all I'm happy with this and would suggest it!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 13, 2026
★★★★★ 5
Works great!
Color: Black, Color: Black
Works great! The mat is a good size and the charger works well! So much more convenient than plugging in to charge.
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Reviewed in the United States on February 24, 2026
★★★★★ 5
Love it!
Color: Black, Color: Black
Great accessory! Needed a desk mat and saw this one that includes a wireless charger and it works perfect!
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Reviewed in the United States on February 12, 2026
★★★★★ 5
Worth every penny!
Love this desk mat!
Huge, sleek light-gray mat with built-in wireless charging. Fits my full keyboard, mouse, and phone perfectly. Super smooth for the mouse, stays put, and instantly made my desk look way cleaner. Great quality and worth every penny!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 8, 2025
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