How do you make a 305 a 350, whats involved? OR is it not possible....?Would it be a waste to try to do it or just buy one already thats a 350?

 

you cant, boring off a 305 to 4" will leave you without cilinder walls, so to speak.

 

uhh, im pretty sure you can't make a 305 a 350.....theres no crank for it...

 

Same crank, not enough cylinder wall thickness to open it to 4"

 

Yep, can't be done.

 

OK thanks guys!!! Din think so but just to make sure...

 

Heh..heh... Why dont you invest in the 350 block and build onto it?

 

that's what i'm doing!

 

It's real simple.

Remove 305. Set aside.
Install 350.

Done!!

350s are pretty easy to find in most places, especially 2-piece rear-main-seal ones. You want more than just the short block, however; the heads that come on 305s, while they will fit 350s, suck. They are mostly built for gas mileage and good low-RPM torque at the expense of horsepower and general high-RPM performance. But, external things like accessories, exhaust systems, ignition systems, etc. are the same between the 2 sizes.

 

I dunno why i would wnt too, just never heard of it and wasn't sure.... I was going to do theswap but i've got 2 g's into my car already and have another 1 g to spend, i dont want to put too much money into her right now, and im just not sure what to use the money on

 

I am in the same sort of situation that you are in... I have some money right now and I am putting it into the 305, what I am doing though is purchasing parts that are all going to transfer over to my 350 when someday I get around to putting it in. (intake carb headers etc...)

-Ben