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Search found 422 matches

by Max_Effort
Sat Feb 02, 2019 10:02 am
Forum: 240-300 "Big Block" Six Performance
Topic: How much should machine work cost?
Replies: 14
Views: 1441

Re: How much should machine work cost?

Unless the OP has something like this in mind....

https://m.youtube.com/watch?v=2m7F7jMIE9k
by Max_Effort
Sat Feb 02, 2019 9:29 am
Forum: 240-300 "Big Block" Six Performance
Topic: How much should machine work cost?
Replies: 14
Views: 1441

Re: How much should machine work cost?

Some people love bi-planes. They enjoy the historical connection to aviation past. They enjoy the challenge of getting an antiquated design to perform at its absolute best, for whatever use they have for it, being crop dusting or barnstorming. They enjoy the search for useful parts and folks who kn...
by Max_Effort
Sat Feb 02, 2019 9:14 am
Forum: 240-300 "Big Block" Six Performance
Topic: How much should machine work cost?
Replies: 14
Views: 1441

Re: How much should machine work cost?

I'm from ...... Clintonville, WV. I'm just trying to get together some prices. This is blasphemy here, but I'm debating ditching my 300 project. It is for my 56 f100. I can buy a complete coyote 5.0, transmission, ecu, turnkey pallet swap for 10k. With less than 20k miles on it. All toll I'm going ...
by Max_Effort
Sat Feb 02, 2019 7:05 am
Forum: 240-300 "Big Block" Six Performance
Topic: Please help me build the ultimate 300 for an F600
Replies: 79
Views: 7817

Re: Please help me build the ulitmate 300 for an F600

v8s I've driven get up to speed faster but don't seem to pull loads any better..just make more noise and burn more fuel There is also something to be said for nostalgia...300s are just plain cool engines..the simplicity..durability..and plentiful generally cheap parts ..abet custom stuff make them ...
by Max_Effort
Fri Feb 01, 2019 9:20 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Please help me build the ultimate 300 for an F600
Replies: 79
Views: 7817

Re: Please help me build the ulitmate 300 for an F600

Wow again. Massive frame and running parts. I'm thinking there may be room for two 300s :D The new head is based on this casting which is off shore. https://www.techshopmag.com/enginequest-introduces-new-ford-300-stock-cylinder-heads/ It certainly weighs more than the stock heads. Just ask Bruce &q...
by Max_Effort
Fri Feb 01, 2019 9:02 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Please help me build the ultimate 300 for an F600
Replies: 79
Views: 7817

Re: Please help me build the ulitmate 300 for an F600

Ok back to the engine Based upon some info gleaned for all of you my decisions are trending towards these suggestions; Build the best possible regular pump gas motor I can for this application BLOCK Use the OX block stock 4.00 for the build... bake it off.. see what it looks like.. my machinist wou...
by Max_Effort
Fri Feb 01, 2019 7:59 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Rebuilding 240
Replies: 42
Views: 4033

Re: Rebuilding 240

I have set timing to the best of my ability, using the dot on the balancer and the marks on the timing cover. I have read that the balancers have a habit of coming loose and turning on the rubber so it may be off. The distributor has the dual vacuum lines and I read that I could block the retard fu...
by Max_Effort
Fri Feb 01, 2019 6:30 am
Forum: 240-300 "Big Block" Six Performance
Topic: New owner of a 1987 F-150, looking for some advice.
Replies: 15
Views: 1821

Re: New owner of a 1987 F-150, looking for some advice.

spinning starter motor - Sounds like your starter motor bendix has failed. They are available separately. Or - heaven forbid - you've cleaned off the teeth on the ring gear. I can only seem to find non SFI rated flexplates online that state they are a direct fitment for the 300-six. The brand/part ...
by Max_Effort
Thu Jan 31, 2019 8:23 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Please help me build the ultimate 300 for an F600
Replies: 79
Views: 7817

Re: Please help me build the ulitmate 300 for an F600

Larger valves and larger cam don’t “work against each other” What is true is the better a head flows/works, the less cam you need to make the same power. A poor flowing head needs more cam, to make the power. Your medium duty build and gearing will benefit from moving the powerband up from stock. A ...
by Max_Effort
Thu Jan 31, 2019 3:55 pm
Forum: 240-300 "Big Block" Six Performance
Topic: How much should machine work cost?
Replies: 14
Views: 1441

Re: How much should machine work cost?

I've already purchased reconditioned 240 rods, and it appears I'll skip the line hone based on FTF's argument. So it looks like $1500 should be a reasonable base amount. I'm thinking $800-1000. For what you want done, Depending on what type of block cleaning ( jet wash or thermal) Another way to go...
by Max_Effort
Thu Jan 31, 2019 8:35 am
Forum: 240-300 "Big Block" Six Performance
Topic: Please help me build the ultimate 300 for an F600
Replies: 79
Views: 7817

Re: Please help me build the ulitmate 300 for an F600

My comments are going to reflect the approach I'd take for a medium/heavy duty application , not specifically the 300-6. , I'd upgrade to forged pistons and higher quality plasma rings ( better than the rebuilder quality) Consider The Speed-pro L2446 forged pistons with your early connecting rods. R...
by Max_Effort
Wed Jan 30, 2019 10:27 pm
Forum: 240-300 "Big Block" Six Performance
Topic: How much should machine work cost?
Replies: 14
Views: 1441

Re: How much should machine work cost?

Just curious what a ballpark figure would be to have a short block machined? Here is what I'm thinking I would need: Cleaned and Magnafluxed Bored 10 to 30 thousandths over Decked Line bored Cam bearings installed And separately from that, what would ballpark be if I needed the crank ground? And pi...
by Max_Effort
Wed Jan 30, 2019 9:53 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Hypothetical power output question?
Replies: 9
Views: 1289

Re: Hypothetical power output question?

Yes, that was my primary job function from the inception of the reborn GT in '81 through the EFI years until 1987 when I moved over to the Modular Engine Group until my retirement. Best job in the world but after 31 years there were other things I wanted to do in my lifetime so I bid adieu. I worke...
by Max_Effort
Tue Jan 29, 2019 6:33 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Hypothetical power output question?
Replies: 9
Views: 1289

Re: Hypothetical power output question?

A third engine you could add the the comparison would be the 1984 Mustang GT, on which I did the dynamometer development and durability testing while I was an engineer at Ford. It had a 4V carb , along with dual exhausts, a stouter cam, a bigger dual inlet air cleaner, headers, and dual exhausts wi...
by Max_Effort
Sun Jan 27, 2019 7:39 pm
Forum: 240-300 "Big Block" Six Performance
Topic: New owner of a 1987 F-150, looking for some advice.
Replies: 15
Views: 1821

Re: New owner of a 1987 F-150, looking for some advice.

Max-Effort and Frenchtown Flyer have given you very good info. The only part of the EFI engine that limits power is the EFI ECM box. Once you replace the stock ECM you can install larger injectors and a performance cam. Look at the Holley HP EFI system for self learning multiport injection. Scorpio...
by Max_Effort
Sun Jan 27, 2019 5:40 pm
Forum: 240-300 "Big Block" Six Performance
Topic: compression
Replies: 158
Views: 12396

Re: compression

After looking at the EFI heads I had standing in the corner of the shop I decided to try modifying one of them instead of pulling another engine apart to get a 300 carb head. I realise The fast burn properties will likely be destroyed by modifying but I have never done this kind of work before and ...
by Max_Effort
Sun Jan 27, 2019 3:20 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Street 300 L6 Motor
Replies: 332
Views: 54315

Re: Street 300 L6 Motor

Yes 90 degrees at .250" valve lift. The rocker ratio shouldn't change the pushrod length because when the rocker is 90* with the valve stem, it is the valve stem height that determines how high the rocker is. Scott Foxwell made this video a few years ago. It explains what pmuller9 is describin...
by Max_Effort
Sun Jan 27, 2019 2:09 pm
Forum: 240-300 "Big Block" Six Performance
Topic: New owner of a 1987 F-150, looking for some advice.
Replies: 15
Views: 1821

Re: New owner of a 1987 F-150, looking for some advice.

For the magnetic switch, AKA starter solenoid on the fender, I prefer this style Cole-Hersee unit. These are also availible from Napa in their house brand. Just be sure it’s the intermittent rated 750 amp. The four terminal requires a ground to one of the small terminals. The three terminal grounds ...
by Max_Effort
Sun Jan 27, 2019 11:40 am
Forum: 240-300 "Big Block" Six Performance
Topic: New owner of a 1987 F-150, looking for some advice.
Replies: 15
Views: 1821

Re: New owner of a 1987 F-150, looking for some advice.

Hey all, long time lurker but this is my first post due to me waiting until I was an actual owner of a 300-6. I recently picked up a 1987 F-150 that's the perfect project I was looking for. Long story short I've done a fair bit of research prior to obtaining the truck and I have a semi-decent plan ...
by Max_Effort
Sat Jan 26, 2019 11:15 am
Forum: 240-300 "Big Block" Six Performance
Topic: about self guided rockers
Replies: 15
Views: 1889

Re: about self guided rockers

Found these while I was searching for something else. I don't know anything about them. https://www.macsautoparts.com/ford_truck_late/ford-pickup-truck-rocker-arm-kit-300-6-cylinder.html?utm_source=google&utm_medium=paid_search&utm_campaign=paid_search_google_pla&adpos=1o2&scid=scpl...
by Max_Effort
Thu Jan 24, 2019 9:41 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Engine vibration on high mi. engine
Replies: 3
Views: 622

Re: Engine vibration on high mi. engine

X2 on a motor mount. Or something contacting the frame or body when you load the drivetrain.
Or a misfire/skip under load
by Max_Effort
Thu Jan 24, 2019 9:37 pm
Forum: 240-300 "Big Block" Six Performance
Topic: about self guided rockers
Replies: 15
Views: 1889

Re: about self guided rockers

thanks for your input man. Somehwere I read about a BBC rocker IIRC that was stamped, but had little dimples on the tip to keep it centered on the valve. I cant find the article now. Ive heard BBC rockers are used in a stud ball arrangemwent hence my interest..still looking. All BBC's came with pus...
by Max_Effort
Tue Jan 22, 2019 10:49 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Rebuilding 240
Replies: 42
Views: 4033

Re: Rebuilding 240

I'd make it a 300 even if staying with the 1bbl. It will have more torque, pull better in the higher gears with less need to downshift. Obviously Ford decided 300 cubes was better suited for a truck.
by Max_Effort
Tue Jan 22, 2019 10:17 am
Forum: 240-300 "Big Block" Six Performance
Topic: Crankshaft prep before machine shop.
Replies: 6
Views: 1200

Re: Crankshaft prep before machine shop.

The crank is typically spun to around 500 RPM on the balancer. (Five hundred) I wouldn't want to be anywhere near a crank on a balancer spinning at 5K RPM... I think you are wasting time and effort trying to grind a whole bunch of material off of the crankshaft. You might be making the the balance j...
by Max_Effort
Fri Jan 18, 2019 3:28 pm
Forum: 240-300 "Big Block" Six Performance
Topic: misaligned block cam journal
Replies: 33
Views: 2838

Re: misaligned block cam journal

A small amount of extra clearance at one cam bearing isn't enough to drop oil pressure to 10psi with an HV pump and 20w50. There had to be a lot more going on. I would be interested in what was found on the teardown. How was the bearing clearance, conditon of all parts including, bearings, journals,...
by Max_Effort
Thu Jan 17, 2019 5:49 am
Forum: 240-300 "Big Block" Six Performance
Topic: misaligned block cam journal
Replies: 33
Views: 2838

Re: misaligned block cam journal

Sealed power makes a set of undersize bearings, main bearings, for the three hundred. I found them on rock auto,.001 under the standard size. Well I guess the three hundred doesn't like me. Today I took the rotating assembly out of the first block with the misaligned cam. I guess what the other for...
by Max_Effort
Wed Jan 16, 2019 8:51 pm
Forum: 144-250 "Small Block" Six Performance
Topic: 144 lifter hydraulic lifters solved and question
Replies: 5
Views: 784

Re: 144 lifter hydraulic lifters solved and question

1) Generators on cars, typically do not charge at idle speed. Alternators typically do charge at idle speed. Both have more output as engine speed is increased. Charging at idle and reliability are the main reasons automakers switched to alternators. 2) Does this engine have a PCV valve and is it wo...
by Max_Effort
Wed Jan 16, 2019 2:37 pm
Forum: 240-300 "Big Block" Six Performance
Topic: misaligned block cam journal
Replies: 33
Views: 2838

Re: misaligned block cam journal

If the cam turns freely, it will be fine.
If the crank turns freely in torqued mains, with normal bearing clearance, it's also going to be fine.
by Max_Effort
Tue Jan 15, 2019 10:02 am
Forum: 240-300 "Big Block" Six Performance
Topic: Highway power?
Replies: 10
Views: 1501

Re: Highway power?

It will do a lot better between 3000-4000 RPM where the engine is making power. This has been true for many lower powered trucks I've owned from Nissan 4cyl to 300-6. If in overdrive in the low 2000's you'll drop a lot road speed and have to down shift. Despite wind resistance, my 83 F150 will pull ...
by Max_Effort
Mon Jan 14, 2019 8:32 am
Forum: 240-300 "Big Block" Six Performance
Topic: misaligned block cam journal
Replies: 33
Views: 2838

Re: misaligned block cam journal

Could be a few good things, the cam itself might be a bit bent. The bearing was slightly hurt going in - or a little scraped on the back side. It could be the cam tunnel alignment, but I didn't think these blocks are known for that. If you have a clean used camshaft, slide it in, then, with a 3'lb h...
by Max_Effort
Sun Jan 13, 2019 10:55 pm
Forum: 240-300 "Big Block" Six Performance
Topic: How to adjust rocker arms with hydraulic lifters?
Replies: 3
Views: 899

Re: How to adjust rocker arms with hydraulic lifters?

Should this be done with the hydraulic lifters "dry" on the inside? It can be done either way. Pmuller9 wrote the sequence that will always work. Now when you adjust, first have the rocker loose enough so the push rod and rocker is sloppy. Then tighten down while wiggling the pushrod ligh...
by Max_Effort
Sat Jan 12, 2019 8:55 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Low Performance Offenhauser Dual Plane
Replies: 32
Views: 10449

Re: Low Performance Offenhauser Dual Plane

THE FRENCHTOWN FLYER wrote:
Shorty wrote:duel plain?

I saw one of them in an old Clint Eastwood movie.


It’s a “manifold shoot out”. I saw it in Hot Rod magazine.
by Max_Effort
Sat Jan 12, 2019 3:19 pm
Forum: 240-300 "Big Block" Six Performance
Topic: compression
Replies: 158
Views: 12396

Re: compression

The problem with the Melling cam is when they went with a longer duration exhuast lobe they got stuck with the extra lift which is not needed. It’s also an ancient design, part of that whole series of lobes designed for use in the Chevy SBC, then put on every type of engine cam core, whether it’s g...
by Max_Effort
Sat Jan 12, 2019 3:07 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 300-6 drawings
Replies: 8
Views: 1505

Re: 300-6 drawings

F6E9DF0D-30E8-49CD-822B-BD6D958809C1.jpeg



C1A87924-A69B-4979-B043-6D341C5A1D04.jpeg
by Max_Effort
Sat Jan 12, 2019 3:01 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 300-6 drawings
Replies: 8
Views: 1505

Re: 300-6 drawings

Drawing for the industrial version of the 300-6, the CSG-649. This drawing shows a front engine mount.

3C6DCE77-0E30-437E-867D-F59738866B7B.jpeg
by Max_Effort
Wed Jan 09, 2019 10:36 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Build the 300 or go V8?
Replies: 22
Views: 2722

Re: Build the 300 or go V8?

keethprince wrote:I'd like to go big block but I want to keep the np435. And finding a bellhousing for a big block is next to impossible.

You can use a 351/400M bellhousing.
by Max_Effort
Wed Jan 09, 2019 10:06 am
Forum: 240-300 "Big Block" Six Performance
Topic: 300 head stud questions concerns
Replies: 5
Views: 833

Re: 300 head stud questions concerns

The pushrod length for the 1984 and earlier heads is 10.140" so just measure what you have. The later pedestal mount rocker heads have a .060" shorter valve but I don't know if the pushrods where shorter. You are correct that the pushrods running through a slotted hole need to be hardened...
by Max_Effort
Tue Jan 08, 2019 9:22 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Next step for more HP?
Replies: 31
Views: 3003

Re: Next step for more HP?

Ok so here's what I'm hearing so far from pmuller9 and jason832: Pistons (Yes, I'm willing to do that), Cam, Head P&P. Considering I'm looking to get off the line quick and maybe spin the tires a little and I never go over 65-70ish in this truck, what cam and pistons would you guys suggest? inv...
by Max_Effort
Tue Jan 08, 2019 9:04 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Reduce Displacement
Replies: 18
Views: 1790

Re: Reduce Displacement

Off topic, but how is the M5OD holding up with 15lbs boost on the 300? What clutch do you have? (I just acquired a complete M5OD with master and slave, transfer case adapter, etc... for my upcoming build) To my surprise its doing great with it. I had a hunch the m5od was tougher then it was put out...
by Max_Effort
Sun Jan 06, 2019 1:05 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 1970 240 F-100
Replies: 5
Views: 894

Re: 1970 240 F-100

By 1974 when unleaded gas was required, US domestic cast iron heads had induction hardened exhaust seats. Industrial and heavy duty heads may have hard seat inserts from the factory. I can't speak specifically to the 240/300, but typically 1970 cast iron heads were not induction hardened. If the sea...
by Max_Effort
Sun Jan 06, 2019 9:23 am
Forum: 240-300 "Big Block" Six Performance
Topic: Reduce Displacement
Replies: 18
Views: 1790

Re: Reduce Displacement

If by endurance you mean a very long engine life than yes it would help me. By endurance, I mean endurance racing or sustained use at high load (high BMEP). If you look at what OEM’s are doing, they are using small displacement, small physical package, ruggedly built engines, with good flowing head...
by Max_Effort
Sat Jan 05, 2019 9:55 am
Forum: 240-300 "Big Block" Six Performance
Topic: h.v. oil pump. why do we need them?
Replies: 5
Views: 885

Re: h.v. oil pump. why do we need them?

Most of the time, you don’t need a high volume pump. It’s one of those “if some is good, more is better” type of thing for most people. Bearing clearance is the biggest leak in the engine. If bearing clearance is normal and oil temps are normal, the stock oil pump is going to be fine. If bearing cle...
by Max_Effort
Fri Jan 04, 2019 11:52 pm
Forum: 240-300 "Big Block" Six Performance
Topic: what oil after rebuild?
Replies: 14
Views: 1439

Re: what oil after rebuild?

sdiesel wrote:wait a sec, has the engine been broke in?
has it run at all?
500 miles on break in oil seems high.
.


Driven BR (Joe Gibbs break in oil made by Lubrizol) recommends their oil for up to 400 miles, one night of racing, or dyno session.
by Max_Effort
Fri Jan 04, 2019 8:27 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Reduce Displacement
Replies: 18
Views: 1790

Re: Reduce Displacement

Ive had similar ideas after building my turbo 300. The 240 route would be very interesting to see as i feel the efficiency would be very good if that was the goal. I think that too much smaller however and the physical bearing size and the weight of the motor and rotating mass would just be too gre...
by Max_Effort
Fri Jan 04, 2019 6:32 pm
Forum: 240-300 "Big Block" Six Performance
Topic: what oil after rebuild?
Replies: 14
Views: 1439

Re: what oil after rebuild?

IDK where you folks buy oil, but synthetic and semi synthetic is not much more than conventional oil around here (Northeast US)
by Max_Effort
Fri Jan 04, 2019 6:20 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Reduce Displacement
Replies: 18
Views: 1790

Re: Reduce Displacement

as much boost as I can off pump gas. Pump premium? That can be done without sleeveing the bore down. I could see if it was some type of full race or endurance deal, running on alcohol or race gas that you’d want a thicker cylinder wall. You can run more boost with E85, but pump E85 is inconsistent....
by Max_Effort
Wed Jan 02, 2019 10:13 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Build the 300 or go V8?
Replies: 22
Views: 2722

Re: Build the 300 or go V8?

Fordman75 wrote:
drag-200stang wrote:Best bang for the buck would be a junkyard LS with a turbo :shock:


Yea especially if you like breaking rods and making blocks ventilated!! :lol:


GM talk on a Ford forum goes over like a fart in church!
by Max_Effort
Wed Jan 02, 2019 7:10 pm
Forum: 240-300 "Big Block" Six Performance
Topic: compression
Replies: 158
Views: 12396

Re: compression

The 3154H is for the lightning 351W. It’s not a popular piston, probably why the cost.
The only advantage is the ring package it uses.
You can get the same design piston 3166H with a typical 5/64 ring pack for half the cost.

Sometimes you can find the Sealed-Power forged L-2446F 30 at a good price.
by Max_Effort
Sun Dec 30, 2018 1:28 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Flowmaster American Thunder Exhaust
Replies: 6
Views: 1182

Re: Flowmaster American Thunder Exhaust

Thanks @max-effort! To answer your question, no, a dual exhaust look is not important to me. I simply want to improve performance. Thank you for pointing out the JBA system. How does it sound? Ive heard the JBA on V8’s, not on sixes. All the Sixes sound about the same to me with free-flowing exhaus...

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