Here is a few places that make parts for the 300 that I found on another website i go to, hope this helps.

Cams
Clifford Performance
Crower
Crane
Comp Cams
Lazer Cams
Accelerated Motion
ultraDyne
Blueracer
Schneider Cams
Iskanderian


Intake Manifolds
Offenhauser
Clifford Performance
Holman Moody
Edelbrock (Both it and the H-M piece are out of production and fairly rare)

Headers
Clifford Performance
MAC
Dynomax
Pace Setter
Hedman
Hooker
for mildly built engines, the EFI manifolds work wonderfully, and are much cheaper

Roller Rocker
Crane Roller
Harland Sharp
Comp Cams

 

Red, The EFI manifolds will work fine with your carbed engine.

 

Message for Red77F100
Freshman User
I too have strapped on a 4-bbl intake (Offy) and a 390 CFM carb. I was warned about cold weather driving (the temp can hover around -15 to -20 F for weeks at a time, in the winter. And that's the daytime high! I have gone to great lengths to get my 3.9L/
240 cid L6 to run properly, everything from fabricating an entire new intake system, to bring in warm air from in and around the exhaust, which is now split through headers; read: now no easy way to keep the manifold warm. What happens is the carb takes forever to reach a proper running temperature, thus more gas is used and to take off from a light etc involves a bit of uneasy running.
If you're in a cooler climate in the winter, what you will need is to hook up some way of heating up either the intake manifold from the exhaust (ever split apart a standard 1-bbl intake/exhaust setup? Note how the two are joined and why). My approach will be to try running a hot water plate between the carb and manifold; apparently hot water from the heater core system is routed through this spacer, thus heating up the carb quicker.

Just a voice of experience
Jeff
1984 E150, recently painted.
3.9 (240 cid) l6, Offy 4-bbl intake, Holley 390 carb., split exhausts, chrome horizontal lag pipes, running boards etc

 

why not run electric fans with a manual on/off switch and a auto relay set to come on, on the temp that you want allowing the engine to heat up instead of having the stock fan cool it down before it has time to heat up, also run a higher temp therm. which would allow the engine to stay at a higher temp for winter usage?
(you could even run a radiator cover to prevent the cold wind from driving from cooling the radiator like we do with our semi trucks) if the engine stays at a warmer temp. it will heat up the engine compartment allowing the manifold, etc. to stay at the right temp.

 

Thx for the input, Stormy. I think what you need is to dump the Offy intake and get a Clifford! J/K! But really, the Clifford is water heated inline with the heater core. The whole intake is ported for coolant and comes with two fittings for the hose. I'm down south, so it rarely gets below freezing here. I will be more concerned with it overheating in the summertime!

 

I was lookin to hop up my 89 F150 4.9,well i googled it and found a nice page on the subject,maybe it will help us 300 owners who arent mechanics understand a little better bout this fine Engine.enjoy,adrock.BTW my 89 only has 87k miles on it.Anyhow check it.email me for link.

 

adrockp,

Is this the article you googled? http://www.mustangandfords.com/techarticles/5283/

Do a few searches on thte board, you'll find LOTS of threads about it.

BTW, welcome to the board.