Holley Performance 300-4 Engine Intake Manifold
Holley Performance 300-4 Engine Intake Manifold
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Holley Performance 300-4 Engine Intake Manifold

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Key item features

  • Single Plane/Open Plenum Design
  • Deep Plenum Design with Isolated Runners
  • 4150 Square Bore Carburetor Mounting Flange
  • Power band: 4500-8500 RPM
  • Height: Front 4.75", Rear 6.25"
  • Port Size: 1.85” height 1.60" width
Current price is Now $367.95
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was $409.95
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3 out of 5 stars
stars2 ratings1 review
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Jun 8, 2018
Chevelle 427
1 out of 5 stars review

Very dissapointing

Had a BBC Holley Strip Dominator that was 15 years + old and loved it. Old one was cracked at a water outlet hole and had the usual age, oxidation etc. so I wanted a new one. Everything looked ok until I was doing the dry install for port matching and alignment and found the water transfer ports now had way smaller casting bosses around them compared to my original and it was so bad the actual gasket embossed seal was sticking out in 2 ports (see pics). Fixed and blasted my old original one and have it back on the car again. Another example of "don't make them like they used too" sad to say here.

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