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Mod | | | Forums66 Topics128,030 Posts1,055,430 Members48,422 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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#25012 01/26/2004 12:21 AM | Joined: Jan 2004 Posts: 43 Junior Member | | Junior Member Joined: Jan 2004 Posts: 43 | I've been reading alot of information/posts about carbs as I am deciding what to do with my 261. Aside from the computation I've seen to calulate how much cfm your engine needs (cu.in x maxrpm/ 3456)x(% v.e.),can someone give me the short story on the cfm rating of a 1 or 2 bbl being lowered if rating it like a 4 bbl? I've not heard of this. To me W.O.T. is wide open throttle. Sidebar: Where is the actual casting # on the 261 head? Manifolds side top foward or where? Thanks. | | |
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