318 Factory Four BBL Intake Manifold

krazykuda said

The loss from the drop in compression is only about 3 - 5 HP according to the desktop dyno when you run it with just the compression decrease....

But you get more power from the increased port flow...

Click to expand...

Funny, my neighbor had a later 70's 15 passenger Maxi van that he carpooled back in the day. It had a 318 TQ from the factory. He outran a '57 chevy with a 350 4bbl with it, he could outrun the 360 TQ's in other vans that carpooled to the same place, and he could lay black marks with it at will. It caught on fire with 246,*** miles on it ending it's journeys.