Go to street cam from the 70s-80s.

gregcon said
"My go-to on "B" 383/400s in resto/mild daily drivers (3.23 gears) is the old Crane "EconPower" 272/284* .454/.480" 112*LSA which is an ancient design. Good vacuum and revs nice with a noticeable idle."

The first engine I ever rebuilt used that exact cam....it was the one item that was 'upgraded' over the PAW cam that came with the kit. It was $10 extra, which was a very serious outlay. It ran great, and is still in the engine today, still running....that's right at 40 years.

Crane was a great company in its heyday. One time, I bought a set of their excellent aluminum 1.5 ratio rocker arms from some guy in the classified ads. They were NIB but the box was old and shabby. I really wanted 1.6 ratio...I called Crane and the guy there said, "Send them to me (not 'us')". Plain and simple. So I did, and a couple weeks later a brand new set of 1.6's showed up. They even paid the UPS shipping to get them to me.

I started early with Crane, as a teenager, with Buicks (455). I ordered a Crower cam from PAW, back when they had the huge catalog with all the cams listed, not just Chevy and Ford like Summit/Jegs. Problem was, their typos in the part number listings got me two sizes bigger cam than what I wanted, and I had a heavy car (LeSabre) with desert gears (2.56). I had waited over a month for the Crower, and when I called and pointed out THEIR mistake/misprint, they offered a similar size Crane cam to the Crower I wanted, and it was in stock (1 week wait), so I bit. Crane no longer lists the cam I was sent, but it was a quick-rate cam for .842" (Buick size) compared to their shelf cams for Olds/Chevy etc., and it worked super in my sled. I still browse Ebay for Crane products NOS from the era before the S&S buyout, especially rockers (alum and ductile), lifters and of course cams.