Ram Jam's biggest hit, "Black Betty," is an excellent song to learn for developing hard rock vocal technique. Ram Jam was an American rock band known for their blues rock sound with heavy guitar and hard vocals.

To start learning how to sing like Ram Jam, it's important to focus on proper breathing and a relaxed jaw and tongue, as the band's vocals are characterized by their raw power. Practicing the "Farinelli Breathing" exercise (video link provided) can help with breath support, while using the Vocal Pitch Monitor tool (available at https://singingcarrots.com/pitch-monitor) can improve pitch accuracy.

One of the key elements of Ram Jam's sound is their use of heavy chest voice. The "Singing Comfort Zone" video (provided) can be beneficial in developing that technique. A good song to start with is "Black Betty," which will help with chest voice development and provide a strong foundation for further hard rock singing.

Another important aspect of Ram Jam's music is their use of growling vocals. The "How to Growl Exercise" (provided) can be helpful in developing this technique, as can learning the song "Keep Your Hands on the Wheel" (available here) which includes growling sections.

Overall, the key to singing like Ram Jam is to embrace the raw power and grittiness of their sound. Remember to warm up before singing and to use Singing Carrots' resources to develop proper technique and pitch accuracy.