What's the best 52 mm throttle body? I think Fastman is no longer around. Thanks.

 

Hipotek.

 

The Hughes Big Gulp throttle body from Hughes Engines works very well. I'm happy with it. Also, another popular throttle body is modified/produced from your core by Rolf Sheffey on the "Dodge & Jeep 5.2 & 5.9 Magnum V8 Performance & Tips" Facebook site. He was doing 52mm and 53MM throttle bodies, but may have stopped doing them. His work looked nice based on the photos on that site, however, I can't speak to how they worked.

 

It will only improve the cfm rate to around 700cfm. If you are building it for performance go up to a 1000cfm of course you will need a new intake also.
https://www.jegs.com/i/Mopar-Perform...53702/10002/-1