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Q4 Head From Factory Race Dept.

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Old Mar 11, 2026 | 12:02 PM
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11971four4two
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MOTORHEAD
 
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Q4 Head From Factory Race Dept.
Extensively Modified
Last Run With Carburetor
Made 300HP





sitting on my coffee table...The WARDEN Aint Gonna Like The Car ****
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Old Mar 26, 2026 | 06:21 PM
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Battenrunner
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Very interesting. Any flow numbers, can specs, Dyno results, or more pics of complete engine with Carb?
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Old Mar 26, 2026 | 06:56 PM
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11971four4two
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I have 7 pages of flow bench data and the cylinder head. That is all that remains.
Sad to say the custom made intakes went to scrap and no pictures...
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Old Mar 26, 2026 | 08:32 PM
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Battenrunner
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That?s a shame about the intake being scrapped.

Would like to see the best flow bench data.
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Old Mar 27, 2026 | 05:42 AM
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11971four4two
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Charts From Quad 4 Testing...






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Old Mar 27, 2026 | 08:29 AM
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fleming442
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That's very cool! I have a soft spot for Quad4s, having had one in the early 90s. A built Quad4 is one of those things I'd love to build, but very low on priority. What are you asking for it?
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Old Mar 27, 2026 | 08:51 AM
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11971four4two
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Here is ad in parts 4 sale arena. The cylinder head still resides in our living room.
Q4 Quad 4 Cylinder Head From Oldsmobile Racing - ClassicOldsmobile.com
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Old May 7, 2026 | 10:15 AM
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DocN
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So what's the chances of bolting a pair of those to a 455 block?

Doc.
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Old May 30, 2026 | 10:11 AM
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The Q4 head may have found a new home...
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Old Today | 11:22 AM
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young olds
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I like the looks of that. I’m trying to get a guy to sell me a w41 he has sitting in his yard, can’t help but think about getting my hands on this head too
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Old Today | 11:49 AM
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11971four4two
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"ROCKET" block oldsmobile racing division...QUAD 4


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Old Today | 11:51 AM
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11971four4two
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TEST MULE......
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