454 TBI rebuild kit?

[dave w]

Which is the 7.4L kit?

This kit appears to have the original thick spacer gasket: https://www.rockauto.com/en/moreinfo...12939&jsn=1037 ACDELCO 40724 (Alternate Inventory Numbers: 40-724, 17076161)

This kit appears to have the correct throttle body to intake manifold gasket for a 1994 7.4 Liter: https://www.rockauto.com/en/moreinfo...12939&jsn=1039 (Alternate Inventory Numbers: 217-2894)

Because there are two versions of the 454 Throttle Body, there has been and likely always will be confusion about the 454 Throttle Body service parts. Typically, 1991 and newer 454's have the newer style. Parts suppliers just can't seem to figure out the service kit difference between the two types of 454 throttle bodies.

7.4LTBI Comparison.jpg