Here is some good small block information: http://www.classiccar.com/articles/F...ck_History.asp

 

what exactly is a canted valve?

 

http://en.wikipedia.org/wiki/Ford_engines

Heres articles on all ford engines.

 

That means they are put in at an angle instead of vertical.
Here is some good info on the 351W vs. 351C argument.
http://lists.twistedpair.ca/pipermai...er/031582.html

 

The quickest / easiest way to tell if you are looking at a 351C is to check the upper radiator hose. On the cleveland the hose goes straight into the block. On the 351 windsor the radiator hose goes into the intake manifold. The intake manifold on a 351C is dry. The cleveland is also a good bit wider. As mentioned in previous posts, the cleveland designation is only used to describe the 351 engines built from 1970-1974. 289's are not technically considered a windsor. BTW... 351 Windsor heads on a 289 small block is an awesome setup! My brother's got that exact setup in his 68 coupe - very quick, and responsive. I'm a bit partial to the 351C, as that's what I've got in my 68 coupe. It's a tight fit (a real knuckle buster trying to change spark plugs) but I digress...

 

The 351 C heads will bolt on a 289,302 also. That is how they did the boss 302.

 

Yes, that is true... the heads on a Boss 302 are basically 351C heads.

Mating 351C heads to a Windsor 289/302/351 has become known as a Clevor. It is not, however, a simple straightforward bolt on deal. It requires machining the heads for new water passages and a custom intake manifold to mate the heads to the block. Bush Performance manufactures intake manifolds for both the 351C 4V and 2V heads in order to build this combo.

There is a good article on Mustang & Fords website explaining the details. Link

 

is there better heads than the cleveland heads out now a days for the 289 that would accomplish the same effect but not need a bunch of work done to them? simple bolt on i mean...?

 

TFS heads work really well on the 289/302 and they are a bolt on deal. Also you can run Edelbrock heads, and Canfield has a nice set as well. For a street engine I would stay with the 180cc ports if you go with TFS.

The main issue with 351W heads on a 289/302 block is the head bolts. You need adapters that fit in the holes because the bolt diameter is smaller on the 289/302. Some aftermarket heads (ie Edelbrock RPM) have the larger bolt holes in them so you need to ask before you buy what size head bolts the heads are for.

I havent been able to find the intake needed to put the C head on a W block, but all you need to do a 302 is swap to pistons cut for the canted valve (ie Boss 302 pistons) and a Boss 302 intake, the 4V heads are WAY TO BIG for a 302 unless you like 9k rpm, 2V heads work alot better and the intake will physically bolt up, there is just a huge mistmatch in the ports. Supposedly bolting a stock 4V intake to 2V heads on a 351C was worth 35hp, so it must not hurt too much.

About the 351C being the first of the 335's, it is similar to 351/400M which uses the same head but a taller deck height, and a different bolt pattern for the trans. Later 302's had the same bolt pattern as 351C's and the 351M had the same pattern as a 429/460. Most people confuse the 351/400M for Clevelands, the 351C was built between 1970 and 1973 only, after that it was an M.

The 351W was very similar to the 302 with the main difference being the deck height as far as blocks go. All of them had the same bore centers and a 4" bore, so head swapping works well. I have a 302, 351W, and a 2V 351C sittin on the floor right now, and a 400M in a 79 4x4, so if you want some pics let me know, I can email them to you..

 

I thought they made th 351C through 74.
And I was told that they were called street bosses when you did that change. lol