Holley 300-261 Small Block Chevy Intake Manifold, Square Bore, Single Plane, Aluminum, Natural, Kit

$361.89
MSRP: $399.00
(You save $37.11 )
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SKU:
HLY300-261
MPN:
300-261
UPC:
90127052136
Condition:
New
Weight:
14.00 LBS
Shipping:
Calculated at Checkout

Applies To Continental U.S. orders only

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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

Notes: Modification to the valve covers may be required when this manifold is used with some types of cylinder heads.

Instructions

Instructions - 199r11523.pdf

Emissions Warning
Products sold on this website may not be legal for use on public roads or highways due to Environmental Protection Agency (EPA) restrictions or California Air Resources Board (CARB) emissions regulations. Federal and State regulations may restrict Product installation to pre-emissions regulation (Model Year 1974 or earlier) or to competition/racing vehicles used exclusively in
1) events organized by recognized bodies, authorizing permits for participating drivers.
2) racing event qualification, and3) practice associated with events.
Installation
 of such products, including driving racing vehicles to and from the track, may be considered illegal “tampering ” or as “defeat device”, and may result in federal and state penalties. It is the purchaser’s responsibility to ensure compliance with all applicable emissions laws, including California’s stricter standards.

Proposition 65 Warning:
This product may contain chemicals known to the state of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.

Engine Block Style:
Stock/OEM standard deck
Style:
Single plane
Basic Operating RPM Range:
2,500-7,500
Material:
Aluminum
Finish:
Natural
Height:
5.280 in.
Intake Section Included:
Complete
Carburetor Mount:
4-barrel square bore
Has Bosses:
No
Bosses Machined:
No
Boss Quantity:
N/A
EGR:
No
Quantity:
Sold as a kit.
Make:
Chevrolet
Engine Family:
Chevy small block Gen I
Engine Sizes:
4.3L/262-6.6L/400
Years:
1955-1986
Cylinder Head Style:
Stock configuration

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