Starting my new engine build soon, with some budget minded changes in place. My goal is to run 7.90's. Car should weigh in around 2,200 lbs when done. Rear gear is 4.10, using 32 x 14.5 tires. Engine combo at this point is an Indy solid RB block, and Indy -1 345cc heads. From what I have calculated, I will need about 875hp and need to go over the stripe around 7,500 rpm.
At this point the block needs to be resleeved, and since it already was sleeved for 4.560" bore, I will resleeve it at that bore. I am also thinking about a 4.25 stroke crank. That will give me 555 cubes. I am going to use as long a rod as I can find, 7.10"+. My concern is if this is too many cubes to get the rpm I need. Would a 4.500" bore or a 4.150" stroke be better for high rpm use? I'm not worried about cylinder wall thickness, this block was run previously at 605 cubes on nitrous and survived until it broke a rod. The intake setup presently has 2 850's on it but will be upgraded to 2 1150 dominators soon enough.