[CraftEngines]

The Brodix T1 heads we do are a 225cc intake runner. They flow similar to the AFR 220 heads we use on our 460ci crate engines. These typically make about 625hp/600ft/lbs torque depending on camshaft. So far we have had good luck with the 4.250" stroke and have been building them well before FRPP started them. If you do not want that much stroke you could always go the 4.170" route and be around 450ci. The Big block engines are definitely more bang for the buck if starting from scratch. A rotating assembly and notching a block would be much cheaper since you already have the sbf parts. Also consider the loss of rear percentage and added torque, will be a little hard to get it to the ground down low.