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Intake manifolds for Oldsmobile 307–455 and AMC/Jeep 290–401 V8 engines. Each engine family has its own manifold, with dual-plane, Air-Gap and single-plane designs in square-bore and spread-bore flange options.
Our V8 intake manifolds are cast and CNC-machined in our own factory, then checked for air-tightness, dimensions and finish before they are packed. Orders ship within 24 hours on business days from our warehouses in Ontario, California and Bloomingdale, Georgia.
How to choose
Olds small block (307, 330, 350, 403), Olds big block (400, 425, 455) and AMC/Jeep V8s use different intake bolt patterns. Pick your engine family first.
| Your engine | Good starting point |
|---|---|
| Olds 307 / 330 / 350 / 403 | 7111 High-Rise Dual Plane |
| Olds 400 / 425 / 455, street | 7551 Air-Gap Dual Plane |
| Olds 400 / 425 / 455, high RPM | 4150 Low-Rise Single Plane |
| AMC / Jeep 290–401, mild street | 2131 Dual Plane |
| AMC / Jeep 304 / 360 / 401, street performance | 7531 Air-Gap Dual Plane |
FAQ
Will an Olds small block intake fit a 455?
No. The 400/425/455 big block has a taller deck and needs its own intake.
Not sure which engine you have?
Email us the engine size, year and any casting numbers and we will confirm fitment before you order.
-11%
Haytalras 7111 Oldsmobile Small Block High-Rise Dual Plane Square/Spread Bore Intake Manifold 307 330 350 403
-11%
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7111 High-Rise Dual Plane Intake for Oldsmobile 307, 330, 350 & 403 A high-rise, dual-plane...
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Haytalras 2131 AMC Jeep V8 Dual Plane Square Bore Intake Manifold 1970-1991 290-401
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2131 Dual Plane Intake for AMC / Jeep V8 (1970–1991) A low-rise, dual-plane intake manifold...
Haytalras 7551 Oldsmobile V8 Air-Gap Dual Plane 4150 Intake Manifold 400 425 455
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7551 Air-Gap Dual Plane Intake for Oldsmobile 400, 425 & 455 An Air-Gap, dual-plane intake...
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Haytalras 7531 AMC Jeep V8 Air-Gap Dual Plane 4150 Intake Manifold 1970-1991 304 360 401
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7531 Air-Gap Dual Plane Intake for AMC / Jeep 304, 360 & 401 An Air-Gap,...
Haytalras 4150 Oldsmobile V8 Low-Rise Single Plane 4150 Square Bore Intake Manifold 400 425 455
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4150 Single Plane Intake for Oldsmobile 400, 425 & 455 A single-plane intake manifold for...