1974 Duster 340 Engine and 727 Transmission Questions!!!
a 904 doesn't need anything exotic in it to hold up to quite a bit of power.. just quality parts and build by someone who knows what they are doing.. i've been running 904's and beating the hell out of them in my cars for close to 30 years now... they hold up and hold up awesome.. hell the one that is in our dart now is one i had build in 2004 or 2005 and beat the hell out of on the street and track in my old yellow dart. then i lent it to a friend with a 11.50 cuda and he ran it a couple years before going modern hemi and OD. was flawless for him too..... when building our existing dart i had it freshened just because everything else was fresh.. once apart my buddy who rebuilt it way back when said it didn't really even need to be done. looked great inside...