Bang for the Buck Thread

rumblefish360 said
The bore and stroke of the engine matter little in where the power is made since it is the cam that ultimately dictates where the power is going to be. The better the head the higher rpm and more powerful the engine will be.

If stroking with a 4 inch are is a limitation to rpm, then please explain why a NHRA 500 cid engine will spin 10K.

Generally speaking, in hot rods and many race car engines, the longer stroke for a bigger engine will have the power leak earlier in the power curve. This is seen with an otherwise apple to apple comparison. An example would be 340 vs a 408. But to use this example as a rule of thumb and to rpm limitations is not wise or in stone.

Here it is best to quote Freiburger, “Tends too…”

The N02 is BUT….

1; Constant refills with N02 make it a looser in the end. The more you use the more the cost effectiveness drops. How much to fill a bottle by you? How often is a refill?

2; The choices were stroker bottom end or heads. Which of the two would you choose.

1. Yes refills get tedious and expensive. Especially if you hit the button three or four times a day on the freeway on ramp. But the expense isn't so bad if you only use it for a few laps at the test n tune. If I've got a 500hp engine, (and I do) I don't need it to be 750hp very often.
2. I thought the question was bang for the buck, not which engine parts to buy. (For edification, I would choose heads first, they'll work on most any short block, then build inches) Building a big, (or BIG) motor without the heads and cam to feed it is not very bright.