As many know, the 360, 2 barrel carb FE was a poor performer in both power production and gas millage.
A young guy that worked for me bought a new F150 with the 360 and told me it was a dog and would not even go 100 MPH and was a gas hog. On a rural paved road we ran it WFO for 5 miles one way and then back. We then repeated the same run with the tail gate down. The truck went 98 MPH with the tail gate up and 101 with the tail gate down.
Into the garage with the truck and we went to work. I took the heads to my favorite machine shop, had the heads milled .060", a 3 angle valve job blended into the bowls, and the intake side of heads milled accordingly. We then installed the heads with a steel shim head gasket and installed a 428 CJ aluminum intake manifold and an 1850, 600 CFM carb.
We then installed a "B" 428 CJ camshaft at 4* advanced and an adjustable valve train from a 405/406 FE.
Installed 406/405 cast iron headers with a 2 1/2" mandrel bent pipes, straight through mufflers, and an "H" pipe.
Curved the distributor with a 11* plate and 16 degrees on the crank.
We had a friend that had a new 1973 F250 with a 460 and we went to him to see where we stood performance wise. Long story short, his 1973 F250/460 could not handle Ray's 1973/360 anywhere performance wise.