Inliners International Forums General Discussion Engines Specs needed for a Chevy I6 (cast # GM 3877178)

230 or 250, not 235...

Did you get a title with the van?

To tell if it is a 230 or 250, check the stamped number on the machined surface just to the rear of the distributor. The code letters will tell what it is when you look it up in a Hollander interchange manual, or contact a Chevy dealership parts counter.