Here is the Cam List for catalog cams.
https://fordsix.com/viewtopic.php?p=613117#p613117

If you are looking for a nice idle at 650 rpm and a wide power band I would recommend the Crower 266HDP (19213) .456”/.461” 210/213 266/274 112deg
The 112 degrees LSA will provide a smooth idle and the 210/213 .050" specs will give you a good midrange power with a moderately ported head.

This cam will allow up to a 9:1 compression ratio with regular pump gas.

The Comp cams are detonation prone and the Crane cams with the long exhaust durations are antiquated carry overs from the early SBC profiles.

 

Yes but I used the 4.910" long SBC valves and needed 10.290" long pushrods.
Stock 300 head pre 1985 valves are 4.810" long.

What valves did you use?

 

I actually didn't ask the machinist, I will check with him this weekend.

 

What are you going to use for an intake manifold and carburetor?
Exhaust manifold or headers?
What will the compression ratio be?

 

Offey C or a dual plane (not sure yet), EFI exhaust and a Y pipe, looking at 500 Edelbrock for the carb. I have a forged crank that was ground and polished (don't have the specks on what that came in at yet) and would like to use forged pistons and arms.

 

Don't know the compression yet

 

I looked at the intake setup for duel carbs but figured setting up one carb was enough, lol

 

The Offy C is a good choice.
The Dual plane doesn't seem to offer any better low end response but the split runner does seem to be a restriction on airflow for the upper part of the power band.
What I don't like about the DP is it forces you to mount the Carb sideways exposing the fuel bowls to the rising exhaust manifold heat and effecting float bowl levels during turns.

The EFI exhaust is definitely an improvement over the log manifold.

I don't know of anyone that has been happy with the Edelbrock Carb on the 300 six. Tuning for gas mileage is one of the complaints.
I would strongly suggest the Summit M2008 500 cfm carb. https://www.summitracing.com/parts/s...00vs/overview/
It has Annular Boosters which works very well with cold intake manifolds.

 

May I ask why you choose the Clifford intake over the Offy? I looked at the Summit carb earlier and although I liked the looks and specs I didn't know of anyone who had any experience with them to talk to. Definitely something I will research more. Thanks for the tip!

 

The only reason why I used the Clifford intake was because I got it cheap off of Ebay.
I prefer the new Offy "C"

The only problem I see with the Summit carb is that it appears to be more susceptible to heat soak after the engine is off.
There was a heat soak problem on the DP manifold because of the sideways orientation.
There is another that may be tested in the early Van closed engine box.

 

Is there any way to eliminate or reduce the heat soak using the Offy "C" and the summit carb?

 

There may not be a problem when using the Offy "C" since the carb sits correctly with the fuel bowls over the intake plenum which shields from the heat rising off the exhaust manifold.
The Carb also comes with a thick insulting spacer to be used between the carb and intake manifold.

You could also heat wrap the EFI exhaust manifolds which would lower the heat in the engine compartment.

About connecting rods and pistons:
The stock rods are forged steel and we just resize the rods with ARP bolts. Stock rods work fine up to 5500 rpm on a naturally aspirated build.

There aren't any "off the shelf" forged pistons for the 1969 and later 300.
Autotec is the least expensive custom forged piston at $562.50 for a set of six dish pistons.

The other choice is to bush your connecting rods ends from .975" down to .912" and use Ford 351 V8 forged pistons.
Depending on how much your machinist wants to charge to bush the rods plus the price of the 351 forged pistons it may be cheaper the get the AutoTec pistons.

 

Thanks Pmuller, I really appreciate all the help!

 

Hello, good evening, I bought this: Harland Sharp Original Roller Rockers S4002 to install on the 4.9i engine. (F150 1994 xlt)
He wanted to know if the lubrication of the rocker is done by means of the rod as it was originally, or if a new lubrication vein needs to be made.
Thank you!

 

Leote

The Harland Sharp rockers lubricate through the pushrods.

The 1985 to 1996 4.9 engines do not use stud mount rockers like the Harland Sharp S4002.
These later model heads use pedestal mount rockers.
If you want to use Harland Sharp rockers the head will need to be drilled and tapped for screw-in rocker studs.
You will also need pushrod guides and hardened shaft pushrods.

What camshaft are you using?