[Greg Reimer 7376]

Some of your larger truck intakes, even '73 and later, due to the size exemption of larger trucks,such as 3/4 ton and larger, had no EGR valve provisions. These intakes would never have shown up in any NHRA specs because they never raced any of those vehicles they came on. Trucks that size aren't in the guide, and that resulted in manifold,block and head cores that don't appear in the usual places.I one time saw a non-EGR low profile 454 intake on a big block 71 Chevelle that had a cast date of sometime in '78. Of course, it was an incorrect number, but they were bracket racing it,anyhow.