Hooker Blackheart 1967-72 C10 Truck LS/LT Swap System Info Thread

[Jason Banks]

Sure would be nice if the instructions:
https://documents.holley.com/199r11655.pdf


Listed the part number for the spacers for the different transmissions. It was by dumb luck that I discovered the 11/16 spacer for the 4L60 is PN 71223012HKR. I figured they might be included with the crossmember. But, for $30+ I'll be machining my own spacer.

[toddoky]

Originally Posted by Jason Banks

Sure would be nice if the instructions:
https://documents.holley.com/199r11655.pdf


Listed the part number for the spacers for the different transmissions. It was by dumb luck that I discovered the 11/16 spacer for the 4L60 is PN 71223012HKR. I figured they might be included with the crossmember. But, for $30+ I'll be machining my own spacer.

The part number listings for the crossmembers are currently incomplete and only the base crossmember as used for the T56 is listed. Other crossmember part numbers will be getting released that include the spacers for specific transmissions in them, which is why the instruction sheet reads "Depending on which crossmember you order, there will be a supplied spacer for your specific transmission". I know it is slightly confusing at this time for those of you on the user end of things as the final complete system landscape is not yet visible. If you can machine the spacer yourself and save the $30+, I think that's great.