And post a current picture of what your gas lines/routing look like that go from your fuel pump to carb.
I insulated my fuel line with Themosleeve covering from fuel pump to carb connection. I also ran Themosleeve on the hard line that parallels the header on the passenger side front frame rail. Also notice we routed the fuel line around the alternator instead of in the small space between the alternator and motor block. And it can get catch airflow to help cool it.
Also notice the fuel lines comming into and out of the fuel pump are straight and no 90 degree connectors. Our thinking/theory was that fuel making sharp turns created turbulance and could vapor lock quicker and reduce flow.
I've driven on two 80 mile each way trips in 90-100 degree weather. I cruised at around 3800-4000 rpm and them some (running late!). Then drove the piss out of it on a short autocross track and second trip on a road course. About 4-5 hours of on and off racing. Then drove home. No fuel boiling. I've got a MP M-1 intake too.
