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Search found 4272 matches

by pmuller9
Mon Aug 24, 2020 12:30 am
Forum: 240-300 "Big Block" Six Performance
Topic: 1989 F150, 4.9 Fuel system and Ignition do over.
Replies: 37
Views: 1767

Re: 1989 F150, 4.9 Fuel system and Ignition do over.

Thank you for the info, I’ve been reading all night. Great learning! I have a question, can I use the Ford TFI distributor that is on my engine? I believe it has a locked rotor shaft. I tried posting a wiring diagram but it would not take. The Ford TFI distributor has a hall effect sensor that requ...
by pmuller9
Sun Aug 23, 2020 7:48 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 1989 F150, 4.9 Fuel system and Ignition do over.
Replies: 37
Views: 1767

Re: 1989 F150, 4.9 Fuel system and Ignition do over.

The distributor gets locked out so the mechanical and vacuum advance no longer function. The Sniper 2300 gets the fixed timing signal from the DS2 distributor through the violet and dark green wires. The Sniper then controls the timing from the timing map you set up in the Sniper's software. The Sni...
by pmuller9
Sun Aug 23, 2020 1:31 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Cylinder heads valves and rockers
Replies: 66
Views: 9915

Re: Cylinder heads valves and rockers

pmuller9 Thanks for the compliment! I pass right by you when I travel to our seating plant in Frankfort. Anytime you're in the Portland, TN area, pop by for a visit. Would love to have you in one of the videos during the build process on this motor. My next video in the "Ole' Blue" series...
by pmuller9
Sun Aug 23, 2020 11:05 am
Forum: 240-300 "Big Block" Six Performance
Topic: Cylinder heads valves and rockers
Replies: 66
Views: 9915

Re: Cylinder heads valves and rockers

Do not use the pistons with the offset round 19 cc dish. They are cast (not hypereutectic) and have a tendency to break the skirts off into the oil pan. https://www.dropbox.com/s/mql2j53tpnsrzhu/Broken%20300%20piston%202.jpg?raw=1 If you use the 25 cc hypereutectic piston and machine the block deck ...
by pmuller9
Sun Aug 23, 2020 10:44 am
Forum: 240-300 "Big Block" Six Performance
Topic: Leaking Carb/Serious Vibration
Replies: 9
Views: 561

Re: Leaking Carb/Serious Vibration

Its unlikely your drive shaft has changed since the time you disassembled thus no need for this exercise out of phase drive shaft can be examined simply by looking. I have seen several times where the driveshaft was installed and the needle bearing cup on the new "U" joint was not seated ...
by pmuller9
Sun Aug 23, 2020 12:01 am
Forum: 240-300 "Big Block" Six Performance
Topic: Cylinder heads valves and rockers
Replies: 66
Views: 9915

Re: Cylinder heads valves and rockers

What is the best way to increase volumetric efficiency for this application then? The power potential is always in the cylinder head. Make it flow more. The 300 six doesn't lose low rpm torque with head modifications. Wouldn’t using a higher octane fuel be part of the build combination expectation?...
by pmuller9
Sat Aug 22, 2020 10:09 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Cylinder heads valves and rockers
Replies: 66
Views: 9915

Re: Cylinder heads valves and rockers

Yes the stock EFI engine has an 8.8 compression ratio but the stock cam has an 268 advertised duration (.006" lobe lift) that is retarded 4 degrees to allow it to run on 87 octane pump gas. The DCR is 6.9 The deception is that an aftermarket cam can run with a higher compression ratio but most ...
by pmuller9
Sat Aug 22, 2020 8:31 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 1989 F150, 4.9 Fuel system and Ignition do over.
Replies: 37
Views: 1767

Re: 1989 F150, 4.9 Fuel system and Ignition do over.

I'm keeping this short. No Offenhauser DP and certainly no DUI. Use the Clifford or Offenhauser "C" intake manifold with the Holley Sniper EFI 2300. Let the Sniper control your ignition timing using a locked DS2 distributor for the trigger and have the Sniper trigger an MSD 6A or 6AL. http...
by pmuller9
Sat Aug 22, 2020 5:20 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Cylinder heads valves and rockers
Replies: 66
Views: 9915

Re: Cylinder heads valves and rockers

I was reading where the 268 cam was causing some issues with dynamic compression, so with added compression the 260 will have its own set of issues as well? Very interesting. Do you think the added ratio of the Scorpion rockers will play nice with the Schneider/Erson cam's? and should I concern mys...
by pmuller9
Sat Aug 22, 2020 12:13 am
Forum: 240-300 "Big Block" Six Performance
Topic: cummins 5.9 or 6.7 exhaust on a 300 non efi head
Replies: 14
Views: 812

Re: cummins 5.9 or 6.7 exhaust on a 300 non efi head

Also also: the length of pipe and diameter have no bearing on compressed temps? A 3 inch pipe, will so how same reading as a 1.5 inch pipe, at the point of engine entry, meaning after having been compressed then channeled into different size pipes the temps will not be altered by that addition expa...
by pmuller9
Sat Aug 22, 2020 12:03 am
Forum: 240-300 "Big Block" Six Performance
Topic: cummins 5.9 or 6.7 exhaust on a 300 non efi head
Replies: 14
Views: 812

Re: cummins 5.9 or 6.7 exhaust on a 300 non efi head

The best 52 mm turbo for the money is the Borg Warner S252 S200SX-E
by pmuller9
Fri Aug 21, 2020 10:57 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Cylinder heads valves and rockers
Replies: 66
Views: 9915

Re: Cylinder heads valves and rockers

Welcome Macgyvers Workshop. This thread is what we call a sticky and is used for reference information on a specific topic. We would encourage you to start your own thread where we can go any direction needed to help you. Meanwhile Yes the Harland Sharp are the only roller rockers that have the corr...
by pmuller9
Fri Aug 21, 2020 3:03 pm
Forum: 240-300 "Big Block" Six Performance
Topic: cummins 5.9 or 6.7 exhaust on a 300 non efi head
Replies: 14
Views: 812

Re: cummins 5.9 or 6.7 exhaust on a 300 non efi head

Let's look at a 300 six running at 3000 rpm that has an VE of 75% at that rpm. A turbocharger running at 9 lbs of boost with the ambient incoming air temp of 75 degrees and a compressor efficiency of 70% at that point has an outlet air temp around 190 degrees. Without any air cooling the engine will...
by pmuller9
Thu Aug 20, 2020 7:03 pm
Forum: 240-300 "Big Block" Six Performance
Topic: cummins 5.9 or 6.7 exhaust on a 300 non efi head
Replies: 14
Views: 812

Re: cummins 5.9 or 6.7 exhaust on a 300 non efi head

The recommended turbo size for a stock cam and stock head 300 six is a 49 to 52 mm compressor inducer. This combination would produce torque from above an idle to 3500 rpm and give you diesel like performance. The 57 mm is on the large side but will give a good response because of the small T3 turbi...
by pmuller9
Wed Aug 19, 2020 9:27 pm
Forum: 240-300 "Big Block" Six Performance
Topic: cummins 5.9 or 6.7 exhaust on a 300 non efi head
Replies: 14
Views: 812

Re: cummins 5.9 or 6.7 exhaust on a 300 non efi head

The bore spacing on the Cummins 5.9/6.7 is 120mm or 4.72". The bore spacing on the Ford 300 is 4.48". No way the Cummins exhaust manifold will even come close to fitting on the Ford 300 head. This is where you use the HD exhaust manifold from the F600 and make an adapter from the manifold ...
by pmuller9
Wed Aug 19, 2020 5:45 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Leaking Carb/Serious Vibration
Replies: 9
Views: 561

Re: Leaking Carb/Serious Vibration

Are the driveshaft "U" joints seated all the way in the yokes?
by pmuller9
Wed Aug 19, 2020 5:40 pm
Forum: Fuel Injection - Mega Squirt
Topic: HOLLEY SNIPER EFI AUTOLITE™ 1100
Replies: 21
Views: 2365

Re: HOLLEY SNIPER EFI AUTOLITE™ 1100

Three TBI units seems like an expensive way to keep the distribution differences, when port injection is pretty close in price. We're talking small six log head not 240/300 head with separate intake manifold. In order to get even air distribution along with increased air flow the log head needs to ...
by pmuller9
Wed Aug 19, 2020 8:50 am
Forum: Fuel Injection - Mega Squirt
Topic: HOLLEY SNIPER EFI AUTOLITE™ 1100
Replies: 21
Views: 2365

Re: HOLLEY SNIPER EFI AUTOLITE™ 1100

FiTech came out with a Tri Power system a while back. The center throttle body has all the sensors and the control module as normal while the end two throttle bodies are slaves units and only contain the injectors. The same holds true for the 2 x 4 systems. One of the units is the controller and the...
by pmuller9
Tue Aug 18, 2020 11:39 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 300 Rebuild
Replies: 153
Views: 22326

Re: 300 Rebuild

Smith Brothers have pushrod lengths in .050" increments or custom.

I use Manton pushrods where they make custom to your specified length.
by pmuller9
Tue Aug 18, 2020 11:05 pm
Forum: Fuel Injection - Mega Squirt
Topic: HOLLEY SNIPER EFI AUTOLITE™ 1100
Replies: 21
Views: 2365

Re: HOLLEY SNIPER EFI AUTOLITE™ 1100

rbohm wrote:i sent holley an email about the possibility of this system being set up to run three one barrel tbi's i hope to hear back in a few days.

It will work if two of the throttle bodies are slave units containing only the injector.
by pmuller9
Tue Aug 18, 2020 10:05 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 300 Rebuild
Replies: 153
Views: 22326

Re: 300 Rebuild

Is the plunger in the lifter up against the retaining clip? Yes. It is tight to the clip. When you install the pushrods and adjust the valves you set the lifter preload about .050" with a 3/4 turn on the adjusting nut beyond zero lash. So you need to add that .050" to the measured pushrod...
by pmuller9
Tue Aug 18, 2020 4:08 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 300 Rebuild
Replies: 153
Views: 22326

Re: 300 Rebuild

Is the plunger in the lifter up against the retaining clip?
by pmuller9
Sat Aug 15, 2020 10:40 am
Forum: 240-300 "Big Block" Six Performance
Topic: Turbocharger, ideal weight oils
Replies: 20
Views: 1059

Re: Turbocharger, ideal weight oils

In order to drive an oil pump with scavenging sections it will need a cogged belt off the end of the crankshaft or hex drive off the end of the camshaft. Serpentines or "V" belts won't do it. I've worked with both. The "49" turbo Ford used a cogged belt drive and the "Miss M...
by pmuller9
Thu Aug 13, 2020 10:05 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Permanent 300 Six Cyl Head CFM solutions- A Work in Progress
Replies: 523
Views: 122846

Re: Permanent 300 Six Cyl Head CFM solutions- A Work in Progress

Red rose racer wrote:Just wondering why the green triangle in corner of my posts

Anytime anyone is "signed in" there will be the green triangle in the upper right corner of their posts.
by pmuller9
Thu Aug 13, 2020 11:17 am
Forum: 240-300 "Big Block" Six Performance
Topic: Turbocharger, ideal weight oils
Replies: 20
Views: 1059

Re: Turbocharger, ideal weight oils

If I had a port in the transmission and case, perhaps the fill plug , just below the full line,that drained by gravity , fluid to the turbo via a line and a drip tank into the turbo.... No overpressure and satisfactory supply , no pump needed. Turbo drains into pump line upstream from pump..... Thu...
by pmuller9
Wed Aug 12, 2020 10:52 am
Forum: Turbo, Supercharger, and Nitrous
Topic: CI'd, Fitech'd, turbo 200
Replies: 10
Views: 742

Re: CI'd, Fitech'd, turbo 200

Beautiful Job!
by pmuller9
Tue Aug 11, 2020 8:15 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Good Mileage Carb/Intake Combination with Offy DP or Clifford 4V
Replies: 37
Views: 1717

Re: Good Mileage Carb/Intake Combination with Offy DP or Clifford 4V

It does have, IMO, a much better runner route to 3/4 ports though. The lower dumps right at the ports. . This is one of the reasons I suggested using the upper section. The 3 and 4 runners of the lower really create a problem with fuel distribution. https://www.ford-trucks.com/forums/1614038-my-two...
by pmuller9
Tue Aug 11, 2020 6:38 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 300 Rebuild
Replies: 153
Views: 22326

Re: 300 Rebuild

It looks like the rocker is sitting too low on the stud. The rocker may be higher once you get a pushrod in place. Remember that that your valves are .100" longer than stock and you may need to start with an adjustable pushrod length .100" longer to check the geometry. That would make the ...
by pmuller9
Tue Aug 11, 2020 4:30 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 300 Rebuild
Replies: 153
Views: 22326

Re: 300 Rebuild

Are you using an adjustable pushrod?
by pmuller9
Tue Aug 11, 2020 2:21 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 300 Rebuild
Replies: 153
Views: 22326

Re: 300 Rebuild

Looks Good.
I agree with not using the cups. You want to be consistent all the way across.
by pmuller9
Mon Aug 10, 2020 6:14 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 300 Rebuild
Replies: 153
Views: 22326

Re: 300 Rebuild

The closed valve pressure is spec'd at 110 lbs and the springs are 115 lbs @ 1.700.
The installed height can be between 1.700 and 1.715

The cups are not required but if you need a .060" shim under all springs then use the cups.
The cups will do a better job of keeping the springs in place.
by pmuller9
Sun Aug 09, 2020 11:29 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Good Mileage Carb/Intake Combination with Offy DP or Clifford 4V
Replies: 37
Views: 1717

Re: Good Mileage Carb/Intake Combination with Offy DP or Clifford 4V

It would be interesting to use the Autolite 2100 on the DP using the back two holes so that only the upper section of the manifold delivers the air/fuel mixture. This would keep the velocity high.
The Autolite carb is annular discharge which does a better job of atomizing the fuel than the Holley 2300
by pmuller9
Sun Aug 09, 2020 9:30 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Offenhauser VS Clifford
Replies: 49
Views: 2125

Re: Offenhauser VS Clifford

Thanks for the pictures. They give a much better understanding of the environment. It looks pretty nasty. Is having a distributor cap and rotor that can get wet be a problem? I can safely tell you that 400 ft lbs of torque with an iron head 300 requires forced induction. If Clifford tells you their ...
by pmuller9
Sun Aug 09, 2020 4:53 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Offenhauser VS Clifford
Replies: 49
Views: 2125

Re: Offenhauser VS Clifford

hahahah Like I said more questions. What you be ideal setup for max low end torque running on 91~93? OK A questions for you. Just for reference: The stock 4.9 makes max torque at 1800 to 2000 rpm and max horsepower at 3000 to 3200 rpm. If you are looking for huge torque, it requires some engine rpm...
by pmuller9
Sun Aug 09, 2020 4:30 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Offenhauser VS Clifford
Replies: 49
Views: 2125

Re: Offenhauser VS Clifford

I will reach out to Billy. Thank you. What if I do the Holley Sniper with Aussiepeed intake? I will be the same price; I'm divided between the nostalgic look and the reliability. You already know the answer. LOL The Holley Sniper with the long runner Aussiespeed intake will give you great low end t...
by pmuller9
Sun Aug 09, 2020 2:30 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Adding a knock sensor bung
Replies: 19
Views: 954

Re: Adding a knock sensor bung

Wesman07 wrote:Exactly. The question is do I grab just a carb head and a fuel injected block or the whole carb motor?

If it doesn't cost that much more for the entire carb engine grab it.
The carb engine brackets also come in handy.

What are you going to use for an intake manifold on this project?
by pmuller9
Sun Aug 09, 2020 2:04 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Adding a knock sensor bung
Replies: 19
Views: 954

Re: Adding a knock sensor bung

Wesman07 wrote:It will be set up for forced induction

Then you will want the carburetor head.
by pmuller9
Sun Aug 09, 2020 9:44 am
Forum: 240-300 "Big Block" Six Performance
Topic: Offenhauser VS Clifford
Replies: 49
Views: 2125

Re: Offenhauser VS Clifford

What about a PerTronix Second Strike Ignition Box or a Digital HP? DIS system? What do you recommend? I want to put as much fire as possible into the cylinders. The object is to stay away from inductive discharge ignitions that do not have dwell control. The reason is at low rpm (where you be opera...
by pmuller9
Sun Aug 09, 2020 6:06 am
Forum: 240-300 "Big Block" Six Performance
Topic: Adding a knock sensor bung
Replies: 19
Views: 954

Re: Adding a knock sensor bung

Wesman07 wrote:Do I pass on the low mileage carb motor? There were quite a few newer motors there. One of them already had a head off of it and the cylinder wall looked like a .30 bore might do it.

Will it be turbocharged or naturally aspirated?
by pmuller9
Sun Aug 09, 2020 1:06 am
Forum: 240-300 "Big Block" Six Performance
Topic: Adding a knock sensor bung
Replies: 19
Views: 954

Re: Adding a knock sensor bung

Wesman07 wrote:Is the factory knock sensor location available on the carbureted block? For some reason it looked to me like it wasn’t?

No. It is normally above the blank dip stick location on the EFI block
What EFI unit are you going to use?
by pmuller9
Sun Aug 09, 2020 12:30 am
Forum: 240-300 "Big Block" Six Performance
Topic: Offenhauser VS Clifford
Replies: 49
Views: 2125

Re: Offenhauser VS Clifford

What about the Davis United Ignition D.U.I. distributors ? The HEI ignition system is not a good match for a low rpm operating range. It has a very low primary resistance coil for good spark at high rpm operations. At very low rpm the HEI module has to current regulate the primary coil current for ...
by pmuller9
Sat Aug 08, 2020 10:22 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Offenhauser VS Clifford
Replies: 49
Views: 2125

Re: Offenhauser VS Clifford

The HEI ignition system is not a good match for a low rpm operating range. It has a very low primary resistance coil for good spark at high rpm operations. At very low rpm the HEI module has to current regulate the primary coil current for a long dwell period which means the module has to dissipate ...
by pmuller9
Sat Aug 08, 2020 10:10 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Offenhauser VS Clifford
Replies: 49
Views: 2125

Re: Offenhauser VS Clifford

The stock piston for the 79 4.9 has a 19 cc round dish that is off center. The piston has a .037" deck clearance. The cylinder head combustion chamber has a 76cc volume. A Fel-Pro 1024 gasket has a 4.18" bore and a .039" compressed thickness. Compression ratio with a 4.00" bore i...
by pmuller9
Sat Aug 08, 2020 8:46 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Offenhauser VS Clifford
Replies: 49
Views: 2125

Re: Offenhauser VS Clifford

As far as ignition the most low rpm torque is found by using the MSD 6A or 6AL with the Ford Duraspark distributor. There are many that have used this combination including myself and every one will tell you the same story. The idle and low rpm response is better than with the previous ignition it r...
by pmuller9
Sat Aug 08, 2020 8:15 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Offenhauser VS Clifford
Replies: 49
Views: 2125

Re: Offenhauser VS Clifford

It is a very common practice here to use the Chevy six 1.75 ratio rocker arms with the stock Ford six cam to increase the valve lift. If you are willing to run whatever fuel octane to meet a higher compression ratio then milling the head is fine. I would wait until you inspect the cylinder wear. If ...
by pmuller9
Sat Aug 08, 2020 7:23 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Offenhauser VS Clifford
Replies: 49
Views: 2125

Re: Offenhauser VS Clifford

Attention to what when porting the in the bowl area? In order to get maximum torque the restriction to airflow around the valve guide boss must be minimized. Here is a mild approach to the intake bowl https://www.dropbox.com/s/e6w8emvynulnqx1/Intake%20Port%201.jpg?raw=1 Here is a more radical appro...
by pmuller9
Sat Aug 08, 2020 7:12 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Offenhauser VS Clifford
Replies: 49
Views: 2125

Re: Offenhauser VS Clifford

vcbota wrote:How do I post pictures here?


Upload your pictures to a host site like imgbb.com or dropbox.
Then copy the photo link between the [image][/image] from the above tool bar that you see when in the edit mode.
by pmuller9
Sat Aug 08, 2020 8:16 am
Forum: 240-300 "Big Block" Six Performance
Topic: Offenhauser VS Clifford
Replies: 49
Views: 2125

Re: Offenhauser VS Clifford

Based on the history of the many 300 six builds on this site the Dynamic Compression Ratio (DCR) range for 87 to 93 octane pump gas is 7.0 to 7.5 The DCR is calculated using the intake valve closing point ABDC using the cam's advertised duration. The stock cam has an advertised duration of 268 degre...
by pmuller9
Sat Aug 08, 2020 12:37 am
Forum: 240-300 "Big Block" Six Performance
Topic: 300 Rebuild
Replies: 153
Views: 22326

Re: 300 Rebuild

I did exactly that after the pic was posted, and I was back working on it. Traded two .015s for one .030. Still not brilliant, so I will be using the offset locks to remove as many shims as I can. I always put the shims under the cup so the spring is fully seated in the cup and the thin shims are p...
by pmuller9
Fri Aug 07, 2020 9:09 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Offenhauser VS Clifford
Replies: 49
Views: 2125

Re: Offenhauser VS Clifford

• ATK 2F03 cylinder heads 240 heads • Headwork o Polish the tops of the valves and mill .060 off cylinder head. o Replace the studs with screw-in studs. 7/16 into the boss and 3/8 for the rocker arms. Do not mill .060" off the 240 cylinder head. The 240 head alone will raise the compression ra...

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