M1 or Port-Matched LD4B on 408

MuuMuu101 said
Maybe I'll post an ad sometime asking if anyone wants to trade for an RPM Airgap. I honestly don't see what I need the M1 for unless I was doing a turbo build or drag racing as you said.

It sounds like the LD works. I mean, there probably aren't many small blocks out there with that particular intake making anywhere near 523 HP. As I understand it, intakes with small runners increase the velocity of the A/F mixture going through the intake tract which translates into more torque. Not sure what an AG would gain you, maybe a few HP? It is fun to swap parts though, can't hurt to give it a shot.

MuuMuu101 said
Anywhere between 50-90F.
Everyone says that, but I've had two people look at it and set the carb and timing exactly the same. She idles at about 850 RPM. She just dies if you try to move her before the water temp reaches 150F. If water temp is around 150F and I am at a stop sign and try to slowly ease from the stop, the car wants to die. She runs at 190F all day and doesn't have any problems once at temp. That's the reason for wanting to go EFI.

Have you tried a different carb to see if the symptoms are the same? Not something random but a known good running carb. Might be worth a try, easy enough to do.

Or, take a big swing at something and adjust a parameter to the edge of spec to see if it has an effect one way or another.

Sorry if I missed it but do you have an A/F gauge hooked up? They can help make the tuning process go quicker.