daevans315

This makes some sense with what I have. There is a heat riser on the passenger side. The current holley 4777 has a manual choke but nothing ran inside the car to move it. But I can see where I think the heat tube probably ran into the passenger side heat riser. It's been capped off I think with something that 40 years of rust has made unidentifiable.

I have a t56 currently behind a 4.3 in a very tired s10. It would also be a nice solution and a little googling seems to say the forward shifter position would be close to the stock location in the avanti. But the stupid 4.3 won't die and everyone wants a mint for them now. I picked the used t56 up for $200 when the 4L60e died. I was appalled when I put t56 into Facebook marketplace search now. One good thing about the SBC, lots of options...

So back to the carb. I've seen a some other consensus around the 4160 but there are still some options. Vacuum secondaries? Choke?

The though about OD has crossed my mind even with the limited miles I've driven it. The Avanti is in the garage next to this one that also came with a 300hp 327. It has been swapped from a 3 on the tree... To a 3 on the tree with a overdrive behind the 3 speed. Making a very rare 6 speed in the column. Id love to do something like that which would be bolt on with minimal mods and could be undone at some point easily.

I've recently inherited a 1967 4 speed Avanti. A partial restoration was started in the mid 80's but never finished. So it sat on jack stands from about 87 till last August. It's mostly complete but as part of the work done in the 80's, some newer 350 heads, amongst other things, were bolted into the original 327 block. I'm looking to put it back as original as I can so one question I haven't found an exact answer to is the carburator. There seem to be a lot of similar 600 - 650 cfm carbs listed on the Avanti (and Corvette) sites for the 300hp 327. It currently has a Holley 4777 in it which is close, and works for now, but as I gather the parts to put things back closer to original, I'd like to get the 'right' one.