{"id":6011,"date":"2026-02-09T10:18:45","date_gmt":"2026-02-09T15:18:45","guid":{"rendered":"https:\/\/stock.corvair.org\/wordpress\/?p=6011"},"modified":"2026-03-29T13:45:19","modified_gmt":"2026-03-29T17:45:19","slug":"engine-top-shroud-variations","status":"publish","type":"post","link":"https:\/\/stock.corvair.org\/wordpress\/2026\/02\/engine-top-shroud-variations\/","title":{"rendered":"Engine Top Shroud Variations"},"content":{"rendered":"\n
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This article will discuss and document the various changes made to the top engine shroud (aka “blower shroud” or “turkey roaster”) over the 10 year production run of the Corvair flat-six engine. Some of these changes were regular production changes, others temporary fixes. This article will be updated from time to time as new information is received.<\/p>\n\n\n\n

Our criteria for including a shroud on this list is that it must be a shroud for which we have clear documentation that it was created by GM, either as part of the original design or by way of a directed order to modify an existing shroud. Examples of directed orders include Assembly Manual instructions for an RPO modification at the assembly line (e.g. 1961 and 1962 Special Crankcase Ventilation) or Technical Service Bulletin (TSB) instructions to the dealerships (e.g. 1960 heat tube). We will include such documentation in this article where available. Photos of existing shrouds will provide additional documentation.<\/p>\n\n\n\n

The basic shroud shapes were produced at metal stamping plants, weld nuts added, painted and then shipped to Vehicle Assembly Plants. Final assembly on the line included attaching spark plug wire guides, heater ducts, and A.I.R. brackets for that particular application.<\/p>\n\n\n\n

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1960<\/h2>\n\n\n\n

The following features are unique for the 1960 top shroud and were discontinued in 1961<\/strong>:<\/p>\n\n\n\n