Quote Originally Posted by Fast355 View Post
Not all V6s or small block V8s used the low pressure system. The later model vans and some trucks with the speed governed TBI units built like the 2 ton truck 366/427 TBI units also had high pressure fuel systems.
I was speaking of pickup's, but everything I had found said that all vans also stayed with the low pressure system, even the rare 96 TBI vortec. I know that non road going TBI switched to high pressure injection in 94. Used to work on boats and some of those ran as high as 60 PSI on the TBI set-ups.