The stroke of a crankshaft is determined by the way it is ground at the factory.
You can't make a 3.75 stroke from a stock crank.
If you bought a 3.75 stroke crank and put it into a 60 over 350 block, you'd have a 388.
Rod length does not effect the size of an engine.
two stroke engines have a power stroke every second revolution of the crank shaft. four strokes have a power stroke every fourth revolution of the crank shaft. that is why a 125cc two stroke has about the same power as a 250cc four stroke.
Using the stock crank and heads the answer is No. The maximum you can bore a 302 is .60 over which would be around 311 cubic inches 5.09 liters. With different heads, different crank, and different pistons, you can go to a 5.7 liter. Reliability will be questionable.
If my math is correct , almost 293 cubic inches ( using a 4 inch bore that is bored out .030 and a 2.87 inch stroke )
If my math is correct , just over 311 cubic inches ( using a 3.875 inch bore and 3.250 inch stroke bored out 30 thousand )
If my math is correct , almost 410 cubic inches ( using a 4 inch bore and a 4 inch stroke that has been bored out .040 )
If my math is correct : using a 4 inch bore and a 3.48 inch stroke , with the cylinders bored .060 , just over ( 360 cubic inches )
A 305 had a 3.75 bore with 3.48 stroke. Adding .030 to the bore and using the formula pi times the radius squared times the stroke times the number of cylinders equals 312.
There are plenty of pointers, but quite a few exceptions as well: - 4-stroke engines will have a camshaft, a 2-stroke can do without - a 4-stroke will have an oil sump, and a separate pressurised oil lubrication system. A 2-stroke can get by on oil mixed in with the fuel - 4 stroke will generally rev lower than a 2-stroke - a 4-stroke will generally have intake and exhaust valves in the cylinder head, while a 2-stroke may get away by using ports in the crank case.
Yes its using petrol unleaded while two stroke using two stroke oil
As I always say, if you got the money, you can make it happen. However, these days, with the available cylinder heads, you would be better to stroke it, using a 400 crank shaft, making a 377.
The bore diameter would be 4.195 and the stroke is 4.218. using the formula pi times the radius squared: 4.195/2=2.0975*2.0975=4.3995*3.14159*8*4.218=466.4 So, a 455 bored 40 over would be a 467
NASCAR uses stock engines, with many of the racers using the engines created by Roush-Fenway. These are four stroke engines that reach horsepower of over 800.