it just depends, the smaller the cubic inch size, the less oil drag, there for more horsepower, but the thing you have to look at is liter size, the bigger the liter size the more horsepower, but the more power and the more strain on its self, so you might get a 25k to 50k more miles out of a smaller liter size but you sacrifice power. 305 and 350 is chevy so its either 5 liters or 5.7 liters, .7 liters more makes a huge difference in power, but then you have gas miledge to take into consideration. so it ultimately depends on what you want out of a car.
-350, the 305 wasn't really a go motor(that's why it hasn't stayed in production like the 350). The 305 had problems with FI and had poor performance. If it is for a replacement motor a 350 for the same price has 75hp/76lb-ft more. 290/326 vs. 210/250 for a long block $2200.
YES a Whole lot better.
5.0L is a 305. 5.7L is a 350
How can you tell a 350 from a 305 engine?
Both are strong engines, but the overwhelming consensus is that the 350 is a better engine, and I agree.
305
Your question is a little vague, so im assuming you're asking which is better between 350 and 305 heads. Many people will tell you it doesnt matter. I think if you have a 350 engine then you should use 350 heads. the 305 heads will have higher compression, which will make the car louder, and somewhat faster, however, if you use 305 heads on a 350 engine then you should use a high octane fuel, so it will be better on your engine. Only use 305 heads if you know what your doing. if not you should probably stick with 350 heads. i hope that answered your question.
it would be a 260 a 350 and 305 are Chevy motors
305 TBI IROC HAS 350 TPIno such thing as a 91 iroc camaro. rs had 305, z28 had 350 im not sure if the z was available with the 305.
The harminoc balancer. The 305 balancer is thin and the 350 is thicker and heaver.
yes
yes
It was the 305 or the 350.