- Summer of 2008- Harrell heads and intakes are coming. It has been a long time since the heads have been available. I have been told 30 years, I may be wrong. The harrell intakes are being cast, there are two different intakes a 3 deuce and a 2 deuce. Please feel free to contact me for further info- I will update this page as soon as I have more info! If you have any history on the Harrell speed equipment PLEASE let me know, we are looking for anything!