My 340 getting 6 mpg

64whiteghost said

Thank you man ! I truly appreciate your information !! I will work on this and get back to you.

Btw alot of guys keep recommending the edelbrock 800 AvS2. Thoughts?

I havent tested cylinder psi. Will do this saturday

I have a 4 speed A833

Where are you located?

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1) I have a bit of trouble with big metering-rod carbs, and late-closing intake valves. I find Holley carbs easier.
Except, for strictly cruising, then the M-rod system is hard to beat. And so, my favorite is and will always be, the Thermoquads.
When the Airgaps began to show up at the local speedshop, they were all Chevys. I ordered one for my 360LA, only available in square-bore, and waited. Had they been available in Spreadbores, I would for sure have bought one.

2) yeah I'm real interested to see the results of the compression test.

3) Manual trans/3.73s is good for a 340.

4) Avatar says south-Central Manitoba/Canada; elevation 900ft which is why I have a 360. It offers a lil more punch off the line.