Carter bbd 1½ main jets

On my 68 Newport 383 auto.
My my current carburetor I have on there I think it's off a 69/70 truck(I think). I bought it off of eBay some years ago. I don't keep track of time it all blurs together... Anyways it's causing me to run warmer than I like seeing at highway speeds around 205°f, city speeds every cools back down to around 180-185°ish. So I'm thinking I'm running lean at highway speeds. I have 3 other parts carburetors that includes my original that came with the car when I bought...

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Author: jct