Kellygreen Posted June 20 Share Posted June 20 this manifold has been machine between the two ports. It is part number 1370318B I believe this is for the 425 engine. Is it usable? Does it have a video similar to ones that has not been machine? You all are aspects it is an excellent condition. Link to comment Share on other sites More sharing options...
Kellygreen Posted June 20 Author Share Posted June 20 should be "value", not video. Spell check @$#! Link to comment Share on other sites More sharing options...
billbuickgs Posted June 21 Share Posted June 21 Machine work is costly so if anyone is interested in having a manifold breath better , this one is completed . I would say the work on this manifold will not decrease the value and will not hurt the operation of a street engine , may even give better low end performance . my 2 cents Bill 1 Link to comment Share on other sites More sharing options...
Kellygreen Posted June 21 Author Share Posted June 21 Thanks Bill. This is one of the parts that I'm trying to sell as a "lot". see my post in the Riviera forum and in the Riviera GS forum. Link to comment Share on other sites More sharing options...
Smartin Posted July 28 Share Posted July 28 https://www.v8buick.com/index.php?threads/docs-dual-plane-mod-and-port-matching-stky.225437/ Link to comment Share on other sites More sharing options...
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