I was told when i got the car that it had a 350 in it with a rochester quadrajet that needed to be rebuilt and it had a leaky rad! no big deal....something to work on!

But wehn i went to take it thru aircare it is registered with a 305!
Now i asked the previous owner and he was told there was a 350 in it...

So my question is how the hell do you tell if it is a 305 or if someone swithced it out for a 350 somewhere along the line.

I figured i would be able to tell by the power but the czrb is screwed and the timing is off so i can't tell wheather it is just that or if it is a dinky engine...

and if so how much total would it cost to do a full conversion with an early model 350??

thanks

 

don't worry about it, people do 350 swaps all the time, when i first ran the car for aircare it came out as a 289ci lol for got to get the VIN changed...

get the casting # on the block and check out nastyz28.com and decode it, or just ask there. gimme the # or cory the # and we both could tell ya.

good luck, sure hope it isn't a 305... lots of coupes came that way though


EDIT: 350sbc are easy to swap and don't cost much more then the parts you need.

 

There is only one way to KNOW what ci it is. Pull off the heads and measure the bore. That is the only way. There are other indicators that will suggest what ci it is (balancer size, head number, carb) but they often are not enough to know. Swapping a 350ci for a 305ci should only cost you the price of the engine. You should upgrade a few things while you are at it, but you dont need too. Just dont run a 350ci through a factory style single exhaust setup. I did and it was sooooo constipated. Stomp the gas and it would go FFFFFFFFFFFTTTTT and the heat riser valve in the exhaust would open/close rapidly .

 

hey cory do you still have that posi u were tell me about?

 

Take a rag/scaper and clean the small 'pad' just forward of the passenger side cylinder head. With a good light you can read the code there. It will have a 3-letter code that will verify the exact year and CI and HP of the engine. Post it here and I'll tell you what you've got.