572 RB Street motor advice?

AndyF said
The Duster that I'm doing for Car Craft will have enough power to run high 9's and it is very street friendly. It is a pump gas 512 with EFI and a hyd roller cam. It is 600+ hp with 3100 lbs so a weight to power ratio of a little over 5. That works out to high 9's if everything else is working properly. Sometimes it takes a lot of work to get the chassis to run the number but in theory it should do it.

So if your car is in that weight range you don't need a 572. You should be able to run high 9's or low 10's with a pump gas 512 and a Sniper Xflow. I think you might need a solid roller to make 700 hp but who knows, perhaps someone can come up with a hyd roller lobe that will get you there.

I may need to change some plans. 572 was number because I already have 4.5 bore Bulldog block. I had planned cross ram to look similar to BO29 hemi, that can change if needed. With the Gerst front suspension I can have less restrictive headers. I am also open to using a solid roller cam, and having converter built to car and engine power curve. The Cuda should weigh in close to your Duster, I'm looking for low 6s in the 1/8 which equates to mid 9s in 1/4. Since I haven't bought crank or heads yet, would I be better to go B1 with a 4.65 or 4.75 crank, and soften camshaft to make this feasible? I've heard stories about oiling issues with B1, and I don't want to get over the edge radical motor. Would something like a Torque Storm supercharger be an option? I have the block, and the car so the rest is an open page. I'm not looking to run drag week or Super Comp with a street car, just say 9.45. Muscle Motors had a King Krate engine, it had 4.56 bore and 4.75 stroke 622 C.I. and 910 HP at 6000 RPM. That is what sparked this build, big inches and lower rpm. The 4.50 bore is fixed, stroke is open to suggestion and heads are open but looks to be B! may be the way to go? Hate to be hashing this out, but I would like to be able to put it together once and be right. Thanks for all the input.