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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: 1235

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: 1330

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: 421

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: 1330

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: 2713

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: 937

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: 1956

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: 1956

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: 519

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: 1956

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: 1125

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: 1956

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: 710

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: 9296

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: 8813

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: 1183

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: 1183

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: 1973

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: 633

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: 2131

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: 1242

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: 605

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: 1242

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: 648

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: 997

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: 1242

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: 997

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: 1242

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: 1973

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: 8813

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: 882

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...
by Max_Effort
Sat Dec 29, 2018 10:40 pm
Forum: 240-300 "Big Block" Six Performance
Topic: How to inspect lifters?
Replies: 18
Views: 1532

Re: How to inspect lifters?

Lifters are inexpensive... Rock Auto has Engine Tech brand for $1.74 ea, Sealed Power for $3.18 ea.
HT900 is the Sealed Power (Federal-Mogul) part number.
by Max_Effort
Sat Dec 29, 2018 12:07 pm
Forum: 240-300 "Big Block" Six Performance
Topic: catalog of conceptual build plans for the b.b.ford sticky
Replies: 39
Views: 5254

Re: catalog of conceptual build plans for the b.b.ford sticky

The 240/300 lifter is .875" and is common throughout the Ford six and V8 engine families. I think the 144 / 170 / 200 / 250 six uses unique lifters (both solid and hydraulic, depending on application). AFIK, The small six and the FE V8, use the same lifter. The big six and all other pushrod V8...
by Max_Effort
Sat Dec 29, 2018 9:31 am
Forum: 240-300 "Big Block" Six Performance
Topic: Excessive blow-by and funky temp gauge
Replies: 10
Views: 867

Re: Excessive blow-by and funky temp gauge

thank you all for the help PCV is connected to manifold vacuum. Today it overheated a bit when sitting at the lights but only in the morning. Later afternoon the temps were between N and O all the time. i guess ill get the temp gauge for the truck The PCV valve is just one component of a system. Ho...
by Max_Effort
Fri Dec 28, 2018 9:25 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Flowmaster American Thunder Exhaust
Replies: 6
Views: 882

Re: Flowmaster American Thunder Exhaust

Is the dual exhaust look important to you? There isn’t any benefit of splitting the exhaust after muffler except looks. If I was going to buy a cat back system, I’d probably get the JBA headers stainless 3” single outlet https://www.summitracing.com/parts/jba-40-2509/overview/year/1996/make/ford/mod...
by Max_Effort
Fri Dec 28, 2018 5:19 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Build the 300 or go V8?
Replies: 22
Views: 1973

Re: Build the 300 or go V8?

Wait so they're making a aluminum head for the 300? If so that settles the debate 300 all the way. And what is the ported sr big valve eq head? I knew they made aluminum heads for the smaller 6s but this is the first wind iv caught of one for the big six They are heads that some members from this s...
by Max_Effort
Thu Dec 27, 2018 9:15 pm
Forum: Orphan Inlines
Topic: Blown Injected Chevy six
Replies: 2
Views: 510

Blown Injected Chevy six

I don't know who this belongs to, but I like it!

IMG_2293.JPG
by Max_Effort
Thu Dec 27, 2018 9:31 am
Forum: 240-300 "Big Block" Six Performance
Topic: Build the 300 or go V8?
Replies: 22
Views: 1973

Re: Build the 300 or go V8?

The OP was comparing 300 to Windsor V8. If you look at some pmuller9 threads, 300 hp around 5500 rpm is what is reasonable with a well ported head and supporting components. The Windsor V8 factory heads aren't much better than a 300 head is. Fords goals for the Windsor weren't performance. You have ...
by Max_Effort
Thu Dec 27, 2018 8:19 am
Forum: 240-300 "Big Block" Six Performance
Topic: catalog of conceptual build plans for the b.b.ford sticky
Replies: 39
Views: 5254

Re: catalog of conceptual build plans for the b.b.ford sticky

I came here looking for combos and had trouble finding them. I asked for direction and did get some help. Using google to search was helpful, I'd suggest a sticky on using a search engine to search the site. In the brief time I've been here, these seem to be the most asked for topics. Builds / Combo...
by Max_Effort
Wed Dec 26, 2018 7:53 pm
Forum: 144-250 "Small Block" Six Performance
Topic: Merry Christmas! Need help
Replies: 6
Views: 567

Re: Merry Christmas! Need help

2 Are you using antifreeze in your cooling system? If you are using antifreeze it has a rather distinct smell (very sweet) which you could probably tell if the core is leaking. Might want to be sure the hose clamps on the core are snug. It could be leaking from the end of the hose onto the back sid...
by Max_Effort
Wed Dec 26, 2018 4:12 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Build the 300 or go V8?
Replies: 22
Views: 1973

Re: Build the 300 or go V8?

Im sure the title is cringe-worthy, however, id like some insight from people that know far more than me. Im building my 85 f150 into a mud truck with occasional cruising (nothing about 45mph). Its a 16" leaf sprung suspension lift running 46" deuce tires. Its on 1 ton ford axles with 5.3...
by Max_Effort
Wed Dec 26, 2018 10:40 am
Forum: 240-300 "Big Block" Six Performance
Topic: Tractor Puller
Replies: 189
Views: 20206

Re: Tractor Puller

Looks beautiful LF! I’m excited to get started on mine. Just bought some 5052 for plenum material. I wasn’t sure how thick to go on the tube given the port shape and bell entry, but pie cuts pretty much became the only option for the flange. I had thought of hammer forming my runners out of two pie...
by Max_Effort
Wed Dec 26, 2018 8:26 am
Forum: 240-300 "Big Block" Six Performance
Topic: 3.50 bore 3.100 stroke?
Replies: 5
Views: 589

Re: 3.50 bore 3.100 stroke?

I no sounds funny the engine class i want to run has a max cubic inch of 184.9 the car is set up for a big six so changing to a different engine is just to much work and money i already run a 245ci and 276ci looking for help on what sleeves and any problems i might have with rod clearance thanks fo...
by Max_Effort
Tue Dec 25, 2018 12:02 am
Forum: 240-300 "Big Block" Six Performance
Topic: Roller Rocker Question
Replies: 43
Views: 2746

Re: Roller Rocker Question

Max-Effort -- Thanks for the information on the Lunati Stamp Steel rockers and the Elgin Roller Rockers. Amazon has a good deal on the SSR-888RS roller rockers. They say they are 1.6 ratio for BBF so they should work with the 240/300 inline 6. Do you know if the Fulcrum length on the arm is the 1.6...
by Max_Effort
Mon Dec 24, 2018 4:57 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Excessive blow-by and funky temp gauge
Replies: 10
Views: 867

Re: Excessive blow-by and funky temp gauge

A Blown head gasket or cracked head usually puts compression into the cooling system. Causing coolant to push out past the cap. It can also cause odd temp readings, and no heat to the cab. It can go the other way, but much less often. Like when the engine is just shut off and the system still has pr...
by Max_Effort
Mon Dec 24, 2018 4:40 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Excessive blow-by and funky temp gauge
Replies: 10
Views: 867

Re: Excessive blow-by and funky temp gauge

As already stated, milk shake on the dipstick is fairly common in cold weather if you're not driving it long distances. I guess I'd start with the PCV valve. If it's plugged, that could explain popping the dipstick. It might also have something to do with condensation (milk shake) in the oil. X2, t...
by Max_Effort
Sun Dec 23, 2018 10:50 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Roller Rocker Question
Replies: 43
Views: 2746

Re: Roller Rocker Question

Look up the Elgin SSR-888RS for modest priced roller
by Max_Effort
Sun Dec 23, 2018 10:43 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Roller Rocker Question
Replies: 43
Views: 2746

Re: Roller Rocker Question

It’s very likely that Elgin makes this for Lunati.
FF5FD315-5558-4A43-945C-1931FAF1B949.jpeg
by Max_Effort
Sun Dec 23, 2018 8:41 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Roller Rocker Question
Replies: 43
Views: 2746

Re: Roller Rocker Question

Just a quick question about stamp steel rockers that will fit a 240/300 motor. I know that the Chevy 194/230/250/292 inline 6 rockers will fit and are the correct fulcrum length of 1.65" and they can be had in 3/8 & 7/16 stud sizes. They are only in 1.7 ratio. Are there any other OEM stamp...

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