20+ years of "Building 904/727 for drag racing use"

A body said
I was just browsing your web site over the weekend. One day I’ll upgrade my incredibly stockish 904 with some more robust parts. The only “jewlray” in this unit is the A&A spring pack and my Pro Trans brake. Eric D spoke pretty highly of your work. This one’s gone 9.0s at 148 so far :). Was sold a reinforced flex band, but am going back to a solid.

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I've read your posts on several forums for years. Your 904 looks happy, and an impressive timeslip as well!!

…..and your 8.5 @ 6k feet build 727. Pro Flight style?

It's not. Its Eric's and just a SB727. He wanted to use his 904s with this car and I wouldn't let him .. lol. But yes, the advantage of a protrans/proflite type deal is the bigger 727 sprag with the lightweight 904 geartrain. It's been my experience that the stock 904 sprag does not like big tires and tire shake.