273????

custom100 said

So if I use the 318, 302 heads can I use any intake or am I still limited to the early still ones?

I also take it that the 302 heads flow better, and would it be worth looking for these heads?

Click to expand...

Cast # 302 heads you can use any 1966 and newer intake.

The old Edelbrock LD4B is made for the 318 and 273,
it has smaller ports to keep the velocity higher,
and in my old fart opinion is about the best intake,
for a 273/318, unless you can find an old heavy cast iron 4bbl 273 one.

The #302 heads are decent out of the box.

I am using the # 302 heads, I didn't have them ported,
only milled enought to clean them up.

Now the big question,
are you going to race the car, do you have 3.90 gears,
or 4.11 etc??

If your going to mostly street drive the car,
don't go crazy trying to get an extra 20 hp,
keep it simple.
Dual exhaust off the stock manifolds is a great place to start.

Here is my 318 with the Ld4B intake,
the 273 timing cover, water pump, exhaust manifolds etc.