Chevrolet Truck Classifications?

[Mark Yacavone]

Originally Posted by k.pascoe

I believe those are the only years that engine is installed in a 1/2 ton pick-up.

I thought that too, and was just going to comment as such.
Then I thought maybe I ought to Google that. I tried 85 C10 454, and at least one came up, as original. I don't think they sold many that way.

Will, the 75 small port GT combo is a rather strange, one of a kind situation.
Not suggesting it should be removed, but rather all in, including the original application.

All of the S10's are not in the guide either.

Don't forget..The 90 454 p.u. can use a straight across .430 lift cam. It might be okay in I/SA