521 BBF FINALLY!

got the crank the other day man iam i happy! scat 9000 4.300. eagle h beam rods 6.700 je pistons flat tops 170877,a429 heads reed solid roller cam 268 int 274 ex 702int 721ex 110lsa. victor intake port matched and carb mounting area open up for dommy and drilled! man this thing is everything you guys say these bbf are.this motor is going behind a hemi doug nash 5 speed trans! should be alot of fun you think? rear gears are 4.30 will be changing them to some 373 or 355 for when i turn on the nitrous(150-175) shot! been looking at all the 521,s on here and seen what there been running with pg,c6,c4, so i like to manully shift so i should be able to get some fast ets out of it! 93 mustang coupe fully gutted with nothing but me and the bottle! the crank i have already has a slug in the front and back! is this internaly balanced or externaly balanced! your help would be appreciated!

Sounds FUN !!

Since the crank has heavy metal in it, the last owner most likley had it internally balanced. But regardless you still need to get it balanced for your rods and pistons!