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Ships within 48 hours · Estimated delivery Jul 19 - Jul 24
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For Your Every Summer RSVP, with Code: SUMMER15
Description
Holley Single Plane Intake Manifold- Chevy Small Block V8 - 300-261Overview: The new single plane intake manifold is designed to provide a broad RPM powerband for high performance street strip engine applications to a maximum engine speed of 7500 RPM. The carburetor mounting pad is designed to accept all stock or aftermarket square bore carburetors with manual or electric chokes. These intake manifolds are designed to accept most stock hardware and accessory brackets, but offer performance features; like an updated
Overview:
The new single plane intake manifold is designed to provide a broad RPM powerband for high-performance street/strip engine applications to a maximum engine speed of 7500 RPM. The carburetor-mounting pad is designed to accept all stock or aftermarket square-bore carburetors with manual or electric chokes. These intake manifolds are designed to accept most stock hardware and accessory brackets, but offer performance features; like an updated plenum divider area, a 1" shorter height than the 300-25 manifold, and a choice of two distributor clamp locations. The isolated design of the air/fuel passages helps to increase charge air density and performance.
The 300-261 intake manifolds are designed for square-bore carburetor applications on 1957-86 262-400cid Small Block Chevrolet engines and SBC engines equipped with 1987-91 L98 aluminum Corvette cylinder heads (non-EGR applications). Also, these manifolds will work with any SBC engine equipped with aftermarket cylinder heads, as long as they have a standard port flange opening and mounting bolt locations.
Features:
- Single Plane with Isolated Plenum
- Square Bore Carburetor Mounting Flange
- Isolated Water cross-over
- Power band: 2500-7500 RPM
- Height: Front 4.18", Rear 5.28"
- Port Size: 1.92” height 1.20" width
Application:
| Year | Make | Model | Submodel | Engine Size |
|---|---|---|---|---|
| 1956 - 1986 | Chevrolet | Corvette | ||
| 1965 - 1985 | Avanti | II | ||
| 1969 - 1986 | Chevrolet | Caprice | 350/5.7L V8 | |
| 1969 - 1986 | Chevrolet | K20 Suburban | 350/5.7L V8 | |
| 1969 - 1986 | Chevrolet | C10 Suburban | 350/5.7L V8 | |
| 1969 - 1986 | Chevrolet | C20 Suburban | 350/5.7L V8 | |
| 1969 - 1986 | Chevrolet | K10 Suburban | 350/5.7L V8 | |
| 1970 - 1986 | GMC | Jimmy | 350/5.7L V8 | |
| 1969 - 1985 | Chevrolet | Impala | 350/5.7L V8 | |
| 1967 - 1981 | Chevrolet | Camaro | 350/5.7L V8 | |
| 1969 - 1981 | Chevrolet | Corvette | 350/5.7L V8 | |
| 1975 - 1986 | Chevrolet | C30 | 350/5.7L V8 | |
| 1975 - 1986 | Chevrolet | K10 | 350/5.7L V8 | |
| 1968 - 1979 | Chevrolet | El Camino | 350/5.7L V8 | |
| 1975 - 1986 | Chevrolet | K20 | 350/5.7L V8 | |
| 1975 - 1986 | Chevrolet | G10 | 350/5.7L V8 | |
| 1975 - 1986 | Chevrolet | G20 | 350/5.7L V8 | |
| 1975 - 1986 | Chevrolet | G30 | 350/5.7L V8 | |
| 1975 - 1986 | Chevrolet | K5 Blazer | 350/5.7L V8 | |
| 1975 - 1986 | Chevrolet | C10 | 350/5.7L V8 | |
| 1975 - 1986 | Chevrolet | C20 | 350/5.7L V8 | |
| 1957 - 1967 | Chevrolet | Bel Air | 283/4.6L V8 | |
| 1957 - 1967 | Pontiac | Laurentian | 283/4.6L V8 | |
| 1976 - 1986 | Chevrolet | Monte Carlo | 305/5L V8 | |
| 1976 - 1986 | Chevrolet | El Camino | 305/5L V8 | |
| 1976 - 1986 | Chevrolet | Camaro | 305/5L V8 | |
| 1969 - 1979 | Chevrolet | Nova | 350/5.7L V8 | |
| 1969 - 1979 | Checker | Marathon | 350/5.7L V8 | |
| 1957 - 1966 | Chevrolet | Suburban | 283/4.6L V8 | |
| 1958 - 1967 | Chevrolet | Biscayne | 283/4.6L V8 | |
| 1958 - 1967 | Pontiac | Strato-Chief | 283/4.6L V8 | |
| 1958 - 1967 | Chevrolet | Impala | 283/4.6L V8 | |
| 1977 - 1986 | Chevrolet | K10 | 305/5L V8 | |
| 1977 - 1986 | GMC | Jimmy | 305/5L V8 | |
| 1977 - 1986 | Chevrolet | K20 Suburban | 305/5L V8 | |
| 1977 - 1986 | Pontiac | Parisienne | 305/5L V8 | |
| 1977 - 1986 | Pontiac | Firebird | 305/5L V8 | |
| 1977 - 1986 | Chevrolet | G10 | 305/5L V8 | |
| 1977 - 1986 | Buick | Regal | 305/5L V8 | |
| 1977 - 1986 | Chevrolet | K5 Blazer | 305/5L V8 | |
| 1977 - 1986 | Chevrolet | C10 | 305/5L V8 | |
| 1977 - 1986 | Chevrolet | Caprice | 305/5L V8 | |
| 1977 - 1986 | Chevrolet | K10 Suburban | 305/5L V8 | |
| 1977 - 1986 | Chevrolet | C10 Suburban | 305/5L V8 | |
| 1977 - 1986 | Chevrolet | C20 | 305/5L V8 | |
| 1977 - 1986 | Chevrolet | C20 Suburban | 305/5L V8 | |
| 1977 - 1986 | Chevrolet | K30 | 350/5.7L V8 | |
| 1966 - 1974 | Checker | Aerobus | ||
| 1959 - 1967 | Chevrolet | El Camino | 283/4.6L V8 | |
| 1959 - 1967 | Pontiac | Parisienne | 283/4.6L V8 | |
| 1977 - 1985 | Chevrolet | Impala | 305/5L V8 | |
| 1978 - 1986 | Oldsmobile | Cutlass Supreme | 305/5L V8 | |
| 1977 - 1985 | Chevrolet | K20 | 305/5L V8 | |
| 1978 - 1986 | GMC | Caballero | 305/5L V8 | |
| 1978 - 1986 | Pontiac | Grand Prix | 305/5L V8 | |
| 1973 - 1981 | Chevrolet | Malibu | 350/5.7L V8 | |
| 1960 - 1967 | Chevrolet | C30 Pickup | 283/4.6L V8 | |
| 1960 - 1967 | Chevrolet | C10 Pickup | 283/4.6L V8 | |
| 1960 - 1967 | Chevrolet | C20 Pickup | 283/4.6L V8 | |
| 1960 - 1967 | Chevrolet | K20 Pickup | 283/4.6L V8 | |
| 1960 - 1967 | Chevrolet | K10 Pickup | 283/4.6L V8 | |
| 1976 - 1983 | Chevrolet | Malibu | 305/5L V8 | |
| 1979 - 1986 | GMC | C1500 | 305/5L V8 | |
| 1976 - 1983 | Pontiac | Grand LeMans | 305/5L V8 | |
| 1979 - 1986 | GMC | G1500 | 305/5L V8 | |
| 1979 - 1986 | GMC | C1500 Suburban | 305/5L V8 | |
| 1978 - 1985 | Chevrolet | G30 | 305/5L V8 | |
| 1962 - 1969 | Chevrolet | Bel Air | 327/5.3L V8 | |
| 1962 - 1969 | Chevrolet | Biscayne | 327/5.3L V8 | |
| 1962 - 1969 | Pontiac | Laurentian | 327/5.3L V8 | |
| 1962 - 1969 | Pontiac | Parisienne |
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 26 reviews
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Product Reviews
★★★★★ 5
Amazing Fit For Tall Senior Slim Person!
Fit Type: 33" Inseam, Size: Medium, Color: Lake Green
I usually wear a size 8 or 10 or medium. But being 5 foot 11 and weigh 145, it’s very hard to find pants that fit. These in medium are great lightweight and long enough that they touch the floor in the back. Being older I have extra weight in my stomach and waist, but the waist is wide and not tight. It fits nice in the back also and the rise is long enough. Great summer pants for our hot weather in Florida. Even if they do pill some, I have a gadget that removes any pilling so not worried about that. I got the medium in the teal color which is not as bright but a nice color.
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Reviewed in the United States on March 4, 2026
★★★★★ 1
Pilling
I loved these pants very much when I first purchased them the fit was amazing and the length was even better. Pants are very flattering. I wore them for the first time a few days ago only for a couple hours and pilling happened immediately! I am very annoyed at that fact because I purchased these pants at the end of March and I am not in my return window! I am Not a happy customer at all. Waste of money
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Reviewed in the United States on June 2, 2026
★★★★★ 5
Bought again but note the material was different .
Fit Type: 33" Inseam, Size: Medium, Color: White
Love these pants . Good quality. Good material and made well. Bought a second pair but they are lighter weight material which is nice for the summer. Will buy again. First heavier white material did not shrink. Not sure about the most recent material as I haven’t washed them yet. Size true to fit
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Reviewed in the United States on May 30, 2026
★★★★★ 5
Good length, nice and comfy!
Fit Type: 33" Inseam, Size: Medium, Color: Army Green
Update after wearing on international trip: I still love these pants, but something about the high waist doesn’t look great on me if I wear a shorter length or cropped top (usually what I wear with high waisted pants). The waistband is too wide, and it looks unflattering. I may try to get it altered (again) to have a thinner waistband, but not eager to spend any more on these than I already have. 😭
Original review: I love these pants….I really wanted a natural fiber pant that wasn’t ankle length (I’m 5’8”)! I do NOT like that so so so many pants (from some of my favorite name brands but especially here on Amazon also) are “high waters”. These are a tad long at 33” (they didn’t have the 31” in size M in the color I wanted), but I will get them hemmed. I am also long waisted and don’t usually like wide waistbands, but this waistband doesn’t bother me, and they look great on. They did not seem to shrink after washing, and I even put them in the dryer on low for about 10 minutes (I wasn’t brave enough to go longer), and they did not shrink much. I was hoping they might shrink a tad in length. They must run a tad large, since I am a bit heavy right now, but they aren’t too tight (like so much of my wardrobe is at the moment). They are very comfortable, and I’m glad to have some pants to wear when I travel.
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Reviewed in the United States on December 23, 2025
★★★★★ 5
They are long enough. Love them.
Finally comfortable pants that fit me in length and look great. I’m buying another pair in black.
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Reviewed in the United States on May 17, 2026