TPI in my 51 GMC

[1project2many]

The intake will limit power. The main factor is the small runner size which limits airflow. A smaller displacement engine will run to higher rpm, 5200 or so with a 302, while a 383 can see a peak as low as 4200. There is an aftermarket version of the TPI based on a system by Airsensors / F.I.R.S.T. which will support more power / higher rpm but they're spendy. They were offered as a standalone system with a fuel only computer and were also sold through B&M as "Superjection."




Leftover NOS from this defunct company was for sale through a website called auto-nomics but I see they've sold their inventory to first performance. There's plenty of reading on the auto-nomics site and you can view some neat installations and current offerings on the first performance site. Personally I'd use a factory GM ecm with this manifold but standalone kits are available.