My friend G wager runs a 904 behind a 426 stroker in his rear engine dragster. He useed a Ultra bell to convert it and espite the high ower he has been feeding it it has not let him down, I was surprised. Engine s producing approx 650 HP and the car is a heavy old double Aa fuel car. So a decent 904 should be able to suvive a 273. Garys has no mega buck parts in it, Just a few kittle tricks wedo to ake them live. It has a trans brake and a 5500 converter Author of Return to Deutschland (True Adventure) Old Reliable (Mopar) http://altonapublicschool.faithweb.com/ http://seniordragster.bravehost.com/index.html [Non-text portions of this message have been removed] ---- Please address private mail -- mail of interest to only one person -- directly to that person. I.e., send parts/car transactions and negotiations as well as other personal messages only to the intended recipient, not to the Clubhouse public address. This practice will protect your privacy, reduce the total volume of mail and fine tune the content signal to Mopar topic. Thanks! '62 to '65 Mopar Clubhouse Discussion Guidelines: http://www.1962to1965mopar.ornocar.org/mletiq.html.