Quote:
Originally Posted by 66Submarine
'65 C30 250 inline six + SM420 acceleration test (0-60...kinda) - YouTube
Another thing is that the siamesed intake manifold and head design is really pretty awful, as I stated earlier. Think a big single-plane intake on a stock 283 would be a good idea? Probably not. A six doesn't have individual runners at all--not even ports! It really works way better than it should, if you think about it. Because of this, I would think that staying conservative with the intake and carb to promote good driveabilty, low-end power, and economy would be preferable to going all-out for a slight HP gain where you don't really even drive 99% of the time (or at all, for some people).
Just my 2 cents.
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You probably know this already...but the head design really isn't that bad...they designed the head for brute low end power...top end was outta the question...that's why most of these things fall on their faces after 3000 rpm....think of a 292...with the bolt boss obstructing air flow...those stinking tiny valves...700 gram cast pistons...little bit of compression...and a whopping .381 lift on the cam....and also a tiny single barrel carb...that is one starved engine...Now...with some mods...like small block valves...lump ports...lighter pistons...more compression..better cam...more carb and split exhaust...292's have been known to make 320+ hp and 340+ torque...and that's more then some 350 v8's can brag about...and the mileage..if done right is actually better....Know a guy with a bone stock 292...he installed a quadrajet carb and headers and a 5 speed...he's getting 20 miles to the gallon. So...depends on what ya want...V8's aren't the only way to go. Oh...Did I forget to mention turbos?
My buck and a half. lol
