would the heads from a 65 326 engine fit onto a 73 350 engine? The code on the head from the 65 engine is 140 and i cant find the code on the 73.
Thanks Guys

The heads will fit, but the compression ratio will be pretty high. It might be too high for pump gas. You will have to use an intake manifold from 1971 or earlier.

Q

Thanks for the help Quenton...i knew you always would be there to help me out. Any other tips for me on building engines... This is actually my first engine i will try to experiment with.
Thanks
Gabriel

The 326 used the 140 as the standard head and the 141 as the H.O. head. While neither were that great as far as Valve size etc... the comp ratio may be a little high as Q mentioned for the 350.

If you could find some large valve heads (better flow) and some that would bring the comp ratio for your motor in at about 9.0.1 or so... you should be just right. Even a later set of 6X-4's and have them milled down slightly would be good... and in a 350, a little cam goes a long way. The bottom end can be all stock, and you can work with the cam, heads and intake to really wake it up.

Yeah, just pick Q's brain on what he may
recommend, (just leave a little for the rest of us to pick!)

Later - Brett - 67 Drop top 455!

Brett's right about the cam - a little goes a long way in a 350. Also consider finding some 1967 - 1970 large valve 400 heads. (#12, #13, #16, #48, #62 or #670) The 72 cc chambers will be almost perfect for a 350 build. Use a stock intake and Q-jet, and either the 068 or the 067 cam and you'll have a killer combination - basically a pump-gas version of the 350 HO. Headers or Long-Branch manifolds would top off the project nicely.

I know you're on a budget and you want to use as much as you already have, but if you want to really step up the performance, you might want to consider some upgrades.

Q

Aren't the valve angles different on pre-1967 heads? Doesn't this cause interference between the valves in the early heads and the pistons in later engines?

Yes, the valves are at a different angle, but at lifts less than .500", there is almost no chance you'll get them to meet. With a much bigger cam, I might not recommend the swap, but in a stock 350 block there's not a whole lot to worry about.

Q