What is a 305 with a 350 crank?
The 305 crank is the nastiest piece of junk that is associated with Small Blocks IMHO. 305-350 cast cranks were the same casting number and the only difference was the factory balancing.
What is the difference between a 305 and 350 engine?
You can bore a 305 and 350 to the same oversize. The difference is the bore diameter to start with. The max bore for a 305 is 3.795″ and a 350 is 4.060″.
Can you put 350 heads on 305?
Virtually any 350 heads will work on a 305. The high compression 350 heads are similiar in combustion chamber size & intake valve size to the 305 heads & will give a 305 the same performance as if using 305 heads.
Will a 305 harmonic balancer fit a 350?
It will fit The 305 and the 350 have the same crank in them. However if your balancer is the original 1985 It is a good idea to change it due to the flex mount getting old and slipping. Just make sure its the same thickness for pulley mounting.
Can a Chevy 350 use a 305 crank?
Young friend of mine is rebuilding a Chevy 350 and he needs a crank. I have a 305 crank in the shop I will never use. I’d be happy to give it to him if it will work. I know that both engines have the same stroke and journal size and that, from a physical standpoint, they will interchange.
Are there balance holes in the crankpins on a 305?
You will notice the 305 has DEEP balance holes. SOLUTION: just get the new engine balanced and all will be fine. I do this for a living. I seem to recall that there is a balance hole in the ends of the crankpins on the 350, but not the 305….but it’s been a few years since I did it for a living. We ran a 350 crank in a 305 for several years.
Which is lighter a 350 or a 305?
That is a lot of imbalance. Production balance jobs are generally held to 50grams of imbalance, and competition balance jobs to 1gram or less. falcongeorge likes this. also a 305 rods are lighter and the beam is smaller than 350 units.
Can you swap cranks on a Chevy 350?
You can swap them, but its easier to use the right one. All but the 400 are internally balanced, and interchange pretty easily, but it doesn’t hurt to have a machine shop balance the whole rotating assembly. Young friend of mine is rebuilding a Chevy 350 and he needs a crank.
