M112 - 300 Build for the '56

guhfluh":2yyzen0y said:
In general, MAP based Speed Density is what is preferred in a boosted application. It is rare, but some tuners still like MAF based tuning in boost. I believe the HP is able to do either, but MAP is what I'd recommend.

A 96 4.9L distributor should be the same hall effect pickup TFI as the earlier 4.9L TFI distributors. I have been under the impression that the shutter wheel changed in late 95 for the MAF based sequential injection 4.9L trucks and the earlier ones were batch injection without the small vein signature.
Click to expand...


Do we know for sure that 3 wire is a hall effect?

Im after the 96 if it will work obviously due to the issues with the tfi module, but also due to the bulky harness. The 96 has a nice petite harness.
 
clintonvillian":dmod4a5k said:
guhfluh":dmod4a5k said:
In general, MAP based Speed Density is what is preferred in a boosted application. It is rare, but some tuners still like MAF based tuning in boost. I believe the HP is able to do either, but MAP is what I'd recommend.

A 96 4.9L distributor should be the same hall effect pickup TFI as the earlier 4.9L TFI distributors. I have been under the impression that the shutter wheel changed in late 95 for the MAF based sequential injection 4.9L trucks and the earlier ones were batch injection without the small vein signature.
Click to expand...


Do we know for sure that 3 wire is a hall effect?

Im after the 96 if it will work obviously due to the issues with the tfi module, but also due to the bulky harness. The 96 has a nice petite harness.
Click to expand...
Yes, 3 wire is Hall Effect. The TFI modules plug into the Hall Effect sensor wiring inside the distributor.

Not talking about TFI, there are Hall Effect sensors out there that are 2 wire and ground through the body instead of a wire, but they are not super common. Pertronix I ignitor module is one that works that way. I don't know of any VR sensor that is anything other than 2 wire.
 
guhfluh":ab5hgnel said:
clintonvillian":ab5hgnel said:
guhfluh":ab5hgnel said:
In general, MAP based Speed Density is what is preferred in a boosted application. It is rare, but some tuners still like MAF based tuning in boost. I believe the HP is able to do either, but MAP is what I'd recommend.

A 96 4.9L distributor should be the same hall effect pickup TFI as the earlier 4.9L TFI distributors. I have been under the impression that the shutter wheel changed in late 95 for the MAF based sequential injection 4.9L trucks and the earlier ones were batch injection without the small vein signature.
Click to expand...


Do we know for sure that 3 wire is a hall effect?

Im after the 96 if it will work obviously due to the issues with the tfi module, but also due to the bulky harness. The 96 has a nice petite harness.
Click to expand...
Yes, 3 wire is Hall Effect. The TFI modules plug into the Hall Effect sensor wiring inside the distributor.

Not talking about TFI, there are Hall Effect sensors out there that are 2 wire and ground through the body instead of a wire, but they are not super common. Pertronix I ignitor module is one that works that way. I don't know of any VR sensor that is anything other than 2 wire.
Click to expand...

Just to clarify...are you saying I could ditch the tfi module and wire directly into the hall effect sensor in the current tfi distributor I own?
 
Yes. ;)

*You may still want to figure out a way of sealing off the hole in the side of the distributor that is left if the TFI module isn't there.
 
picture.php


I found this, these guys used a piece of angle to block the port, and then used spade terminals. Notice the mesh loom, is that to shield the signal? If so, what is the name of it?

Also while this is a good option, I think one would be ahead to buy a rebuilt 96 model distributor, and use it. Having the unit factory sealed, and the harness connectors would make for a simple install/replacement. I can't believe this is something that has been beat to death (by me) and the solution was this simple.

Other than sorting out the connections to the Holley harness this should be an easy swap with the LS Coils.

picture.php


picture.php
 
clintonvillian":349jmwgh said:
Notice the mesh loom, is that to shield the signal? If so, what is the name of it?
Click to expand...


"copper expanding loom" is what you want to search for. You could probably use the jacket off a -4 AN line if you want too. Either needs to be grounded in order to have the best shielding potential.
 
If running CNP ignition, the distributor is just used as a 1x cam synchronizer?
[image]https://i.ebayimg.com/images/g/qzIAAOSw6j1bnU~h/s-l1600.jpg[/image]
 
Firepower354":1n51uvra said:
If running CNP ignition, the distributor is just used as a 1x cam synchronizer?
[image]https://i.ebayimg.com/images/g/qzIAAOSw6j1bnU~h/s-l1600.jpg[/image]
Click to expand...

Correct. I looked for one like in your picture but couldnt find one that would drop in.

Now I feel like Ive gotten some conflicting information on whether I need to leave all 6 vanes or cut them down to just 1.
 
clintonvillian":12m42mg0 said:
Firepower354":12m42mg0 said:
If running CNP ignition, the distributor is just used as a 1x cam synchronizer?
[image]https://i.ebayimg.com/images/g/qzIAAOSw6j1bnU~h/s-l1600.jpg[/image]
Click to expand...

Correct. I looked for one like in your picture but couldnt find one that would drop in.

Now I feel like Ive gotten some conflicting information on whether I need to leave all 6 vanes or cut them down to just 1.
Click to expand...


Pretty sure a 5.0 one like pic, could be converted for the 300, gear swap etc, or a 300 distributor cut and modded. No drop-in.

My 24x/1x trigger is 180 degrees on, 180 off. Not sure if the Holley system wants that or will accept a single point.
 
Gents,

I picked up a 96 distributor. It will be a pretty easy install and connection.

Just an update on the project, I have spent the last few months working on sheet metal. The cab is "almost" finished. I have to finish boxing the firewall and transmission hump. I have the truck blown apart and cab is on the rotisserie.

Once that is complete, I will be jumping over to mounting the M112 and distributor. I have to spend some time on the machines making the cover for the distributor and getting the trigger wheel mounted.

On top of that I picked up another project....

picture.php


picture.php


picture.php


picture.php


picture.php
 
I like the distributor cover and the engraved side cover.
Nice!
 
Okay fellas, what size fittings should I use for my fuel rail -8AN?

Also what all do I need for the fuel system?

Inline pump-what size?
Inline fuel filter
Fuel pressure regulator

Any recommendations on units to buy?
 
Nice metal work on the cab! Is the 300 set back in the chassis where you need the firewall modded or are they just longer than the old 223 six? Fuel line that's equivalent to 3/8 inch should be good with a 1/4 to 5/16 inch return line. On a fuel tank many people mount one of the early Mustang fuel tanks at the back of the frame F100's so you could get one that is all ready set up for EFI with an internal fuel pump see below for one example. Best of luck

1965 up Ford Mustang EFI Fuel Tank 22 Gal
 
As mentioned above you only need AN-06 fuel lines
For reliability you want an intank fuel pump. A 255 LPH is plenty
Inline fuel filter
A boost referenced fuel pressure regulator connected to the return end of the fuel rail with a return line to the tank.
 
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