The Stovebolt Site Forums The Shop Area Engine Shop 216 / 235 manifold heat chambers same size??

I'm thinking of having Kansas Kustoms split my 235 exhaust manifold so I can use my heat riser. Too many lines messing up engine with water heat IMHO. I'm going to use an older 216, 2x1 intake manifold. I've been told that the 216 and 235 will not match up as the bolt holes where the two intakes connect (heat chamber) are different with the 235 being farther apart than the 216. Can I get these to mate up or must I go with water heat and a plate? Thanks

It's true that the 216 and 235 heat chambers are different sizes. Consequently, it is not possible to bolt a 216 intake manifold to a 235 exhaust manifold. If you want to use the 216 2x1 intake you have and want to bolt it to a split stock exhaust manifold, you will have to find a stock 216 manifold to split.

Luckily, it is not that difficult to find stock 216 exhaust manifolds at reasonable prices. You might be able to find one on Ebay or here in the swapmeet. There might even be a few fellow 'bolters that have been tripping over one in their garage and are ready to get rid of it.

Good Luck

If the sizes are different then you can tell by measuring the bolt hole distances, if an old intake manifold was for a 216 or a later 235. Pretty good information for all of us to have for buying at swap meets, e-bay etc.
Can somebody measure the heat chamber mounting holes (on center) , cross corners, of a known 216 and of a known 235? This is important since we also need to machine the ports if we buy a 216 to use on a 235. Knowing what it's really for will avoid any surprises later.
Swap meet buyer: " Hey what's this fit?"
Swap meet seller "What da ya got?" :-)