- Nov 15, 2014
basically look like shorty headers. Of all the gm small blocks, it's arguable that they are among the best flowing. On a 10:1 350 buick with an intake, ported stock heads, and comp 268 cam (not a good cam for a sbb, but HotRod's gotta get them sponsor dollars somehow), headers are worth 30hp. And Buick 350 headers on average are $479-$550, unless you find a used set. And those are usually banged up and destroyed.How well do Buick manifolds flow, out of curiosity?