Search found 5490 matches

by THE FRENCHTOWN FLYER
Mon Nov 19, 2018 11:12 am
Forum: 240-300 "Big Block" Six Performance
Topic: inline 6 newbie, timing gear question
Replies: 11
Views: 141

Re: inline 6 newbie, timing gear question

Could be. The backlash spec on the gears is 002" - .006" I think. The last block I had line honed ( due to a broken main cap) had to have .0015" removed from it, but the machinist adjusted the hone so it only took 0.0005" off the front cap. The backlash was still in spec. I do no...
by THE FRENCHTOWN FLYER
Mon Nov 19, 2018 9:21 am
Forum: 240-300 "Big Block" Six Performance
Topic: inline 6 newbie, timing gear question
Replies: 11
Views: 141

Re: inline 6 newbie, timing gear question

Truth be told I have not noticed any appreciable difference from one gear set to another - fiber, iron coarse, iron fine, aluminum. I think Ford reverted back to the fine gears to make the knock sensor signature more identifyable. I did have one instance where I put a set of fine tooth gears in a gu...
by THE FRENCHTOWN FLYER
Sun Nov 18, 2018 11:12 pm
Forum: 240-300 "Big Block" Six Performance
Topic: inline 6 newbie, timing gear question
Replies: 11
Views: 141

Re: inline 6 newbie, timing gear question

I have a few used sets of fine tooth timing gears around. All of them are steel crank / cast iron cam gears.
I've never seen a set of steel/steel gears. All the factory sets I've seen had cast iron cam gears and steel crank gears.
by THE FRENCHTOWN FLYER
Sun Nov 18, 2018 12:37 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Basic build
Replies: 14
Views: 462

Re: Basic build

GPGoverMPG wrote:... Dang keepers will stick in the retainers.


Smack the edge of the retainers obliquely with a brass hammer first. But not hard enough to bend stuff
by THE FRENCHTOWN FLYER
Sun Nov 18, 2018 12:30 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Carb head combustion chamber question.
Replies: 29
Views: 742

Re: Carb head combustion chamber question.

I recommend installing the biggest hydraulic cam you can find.

You will be marginally acceptable at 93 octane with 9.5 CR . You might have to back off the spark a tad from optimal.

I run a 10.5:1 engine on the street and have to mix 93 with 112 race gas ($8 a gallon - yikes!) in the ratio of 4:1.
by THE FRENCHTOWN FLYER
Sun Nov 18, 2018 12:13 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 300 in a street rod?
Replies: 4
Views: 103

Re: 300 in a street rod?

Here's a couple more examples I've had the pleasure of being involved with - either as a fabricator or as a driver on track: Pinto! https://farm5.staticflickr.com/4915/45940846511_83dd745267_z_d.jpg '65 Comet Cyclone clone https://farm5.staticflickr.com/4830/45891418482_4e80560a25_z_d.jpg
by THE FRENCHTOWN FLYER
Sun Nov 18, 2018 11:55 am
Forum: 240-300 "Big Block" Six Performance
Topic: 300 in a street rod?
Replies: 4
Views: 103

Re: 300 in a street rod?

Anyone have any experience with stuffing the big old six in a vintage car or truck? 1950's? 40's? 30's? A little If you aren't afraid of moving the firewall back and re-arranging some floor sheet metal then an inline six is a good choice for older vehicles because those vehicles are pretty narrow b...
by THE FRENCHTOWN FLYER
Sat Nov 17, 2018 12:42 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 300 torque build 85 Bronco
Replies: 98
Views: 5447

Re: 300 torque build 85 Bronco

The bumps were for if Thermactor air was used. Some applications did; some didn't. Just grind the bumps flush with the roof of the port. There will be a divot left. Disregard it. It doesn't have to be filled in.
by THE FRENCHTOWN FLYER
Sat Nov 17, 2018 11:10 am
Forum: 240-300 "Big Block" Six Performance
Topic: 300 torque build 85 Bronco
Replies: 98
Views: 5447

Re: 300 torque build 85 Bronco

And if you are building your own intake manifold for a carbureted application the runner must include a percentage of taper. EFI runners have little-to-none taper. They don't have to flow a wet mixture. They are not optimum for adaptation to a carburetor. But for many applications it is a valid time...
by THE FRENCHTOWN FLYER
Sat Nov 17, 2018 11:05 am
Forum: 240-300 "Big Block" Six Performance
Topic: 300 torque build 85 Bronco
Replies: 98
Views: 5447

Re: 300 torque build 85 Bronco

RE: port matching to the gasket Most gaskets are intentionally bigger so as to never protrude into the manifold / head port interface. Matching both the head and the manifold to the gasket is not only not necessary it is largely a waste of time. It would be a little like supplying your shower head w...
by THE FRENCHTOWN FLYER
Sat Nov 17, 2018 10:46 am
Forum: 240-300 "Big Block" Six Performance
Topic: Strange oil pressure problem
Replies: 13
Views: 179

Re: Strange oil pressure problem

Air in the oil pressure line to the gauge is inconsequential. As soon as oil pressure builds the compressed air will show the same pressure on the gauge as if the line were completely purged of air.
by THE FRENCHTOWN FLYER
Fri Nov 16, 2018 9:45 am
Forum: 240-300 "Big Block" Six Performance
Topic: opinions on a b.b. 300 in school bus
Replies: 18
Views: 307

Re: opinions on a b.b. 300 in school bus

Neat! Is the suspension lowered? or just staged to look like it is? I'm working on a project - a '60 GMC panel truck / EMT fire dept vehicle - that we installed a Crown Victoria front suspension under. If your front end needs work you may consider such a swap as opposed to rebuilding that older I-be...
by THE FRENCHTOWN FLYER
Thu Nov 15, 2018 9:25 am
Forum: 240-300 "Big Block" Six Performance
Topic: opinions on a b.b. 300 in school bus
Replies: 18
Views: 307

Re: opinions on a b.b. 300 in school bus

Well I hate to swim against the current here but a six ton vehicle (with the potential for another 6K in cargo / passengers) would be better off with a built 460. I have one in a '46 pickup. Should fit. https://farm1.staticflickr.com/853/41521911051_ab05318c40_z_d.jpg OTOH, Ford had a test fleet of ...
by THE FRENCHTOWN FLYER
Thu Nov 15, 2018 9:14 am
Forum: 240-300 "Big Block" Six Performance
Topic: MIke's 1991 Bronco
Replies: 10
Views: 366

Re: Clifford aluminum head

I don't see anything special about that head at all. It looks to have garden variety stock springs, retainers, oil seals, and rocker arm provisions. Good for a core.
by THE FRENCHTOWN FLYER
Wed Nov 14, 2018 8:32 am
Forum: 240-300 "Big Block" Six Performance
Topic: MIke's 1991 Bronco
Replies: 10
Views: 366

Re: Clifford aluminum head

Max_Effort wrote:
THE FRENCHTOWN FLYER wrote:How many of those xflo heads were made?

I don't know.
by THE FRENCHTOWN FLYER
Tue Nov 13, 2018 5:07 pm
Forum: 240-300 "Big Block" Six Performance
Topic: MIke's 1991 Bronco
Replies: 10
Views: 366

Re: Clifford aluminum head

... This one has been stored indoors, in it's original shipping crate and coated with naval jelly it's entire life. ... I bet its a cast iron Ford xflo prototype head similar to this. Why would an aluminum head be coated with naval jelly? https://farm1.staticflickr.com/944/42299281341_ec752d4996_z_...
by THE FRENCHTOWN FLYER
Tue Nov 13, 2018 4:59 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 600 Edelbrock carb
Replies: 11
Views: 236

Re: 600 Edelbrock carb

Why there?
by THE FRENCHTOWN FLYER
Tue Nov 13, 2018 4:57 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Plenum Intake Base Line
Replies: 14
Views: 347

Re: Plenum Intake Base Line

Remove the carb tops. Manually fill the bowls with gas using a syringe. Start the engine. Observe whether gas flows out the boosters when you blip the throttles. Observe whether fuel enters the needle / seat (assuming it is getting consumed by the carb). If no then carb needs work (assuming you alre...
by THE FRENCHTOWN FLYER
Tue Nov 13, 2018 8:49 am
Forum: 240-300 "Big Block" Six Performance
Topic: Carb head combustion chamber question.
Replies: 29
Views: 742

Re: Carb head combustion chamber question.

Pull the intake side of the combustion chamber down into the quench area to make it more like a kidney bean shape a la the 240 chamber. Here again, I make a template of the first one out of 1/4" plexiglass with dowel holes for alignment so that chamber shape can be accurately transferred to the...
by THE FRENCHTOWN FLYER
Tue Nov 13, 2018 8:46 am
Forum: 240-300 "Big Block" Six Performance
Topic: 600 Edelbrock carb
Replies: 11
Views: 236

Re: 600 Edelbrock carb

RE: new exhaust system
If you are running dual pipes all the way back I recommend an "H" or "X" pipe to join the two together up front. If you are "Y'ing" the two outlets together an H or X pipe won't be needed.
by THE FRENCHTOWN FLYER
Mon Nov 12, 2018 4:07 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Searching for Builds / Combos
Replies: 41
Views: 1704

Re: Searching for Builds / Combos

OK wood,
I had to google pietenpol biplanes. There are some beautiful home builts out there. One more thing for my bucket list...
by THE FRENCHTOWN FLYER
Mon Nov 12, 2018 3:33 pm
Forum: 240-300 "Big Block" Six Performance
Topic: "180" degree crank SIX CYLINDER hi-torque engine
Replies: 10
Views: 248

Re: "180" degree crank SIX CYLINDER hi-torque engine

I think the EEC EFI system is a wasted spark system that fires every revolution any way so no big deal.
by THE FRENCHTOWN FLYER
Mon Nov 12, 2018 11:59 am
Forum: 240-300 "Big Block" Six Performance
Topic: Plenum Intake Base Line
Replies: 14
Views: 347

Re: Plenum Intake Base Line

What volume do you run on your two race cars with 3x2 carbs? Thanks for the replies On my Super Pro (avatar) car its 243 ci. That is with a wooden spacer I've added. That works in a drag car but the engine temp is critical. The engine temp must be up or it stumbles on the line. After warming the ca...
by THE FRENCHTOWN FLYER
Mon Nov 12, 2018 11:34 am
Forum: 240-300 "Big Block" Six Performance
Topic: "180" degree crank SIX CYLINDER hi-torque engine
Replies: 10
Views: 248

Re: "180" degree crank SIX CYLINDER hi-torque engine

Wouldn't it be 240 degree firing interval? It's a 120 degree crank? 720 /3 is 240. Or am I missing something? That's why in the title I put 180 in quotes" ". Most people have heard of a 180 degree flat crank V8 but if I titled it 240 degree crank folks might not picture what I'm talking a...
by THE FRENCHTOWN FLYER
Mon Nov 12, 2018 9:58 am
Forum: 240-300 "Big Block" Six Performance
Topic: Carb head combustion chamber question.
Replies: 29
Views: 742

Re: Carb head combustion chamber question.

Just to bring everybody up to speed - myself included - here is what I understand you are wanting: 4.05 bore = 308 ci Desired CR = 9.4:1 Total unswept volume desired = 100.3 cc Total unswept volume will include combustion chamber size, valve dish and seat height, piston reliefs, spark plug, top ring...
by THE FRENCHTOWN FLYER
Mon Nov 12, 2018 9:43 am
Forum: 240-300 "Big Block" Six Performance
Topic: 68 F100 Upgrade suggestions
Replies: 10
Views: 251

Re: 68 F100 Upgrade suggestions

Stock production cam:

Image
by THE FRENCHTOWN FLYER
Mon Nov 12, 2018 9:37 am
Forum: 240-300 "Big Block" Six Performance
Topic: Plenum Intake Base Line
Replies: 14
Views: 347

Re: Plenum Intake Base Line

Once its running it should stay running. Something else is wrong. Vacuum leak? Uncapped PCV ports? Timing off? I borrowed the term "stuffer block" from the days of two-stroke go kart engines. Yes, partially fill the plenum with something to reduce its volume - wood, epoxy, concrete, etc. j...
by THE FRENCHTOWN FLYER
Sun Nov 11, 2018 9:51 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Chevy Rocker question
Replies: 12
Views: 206

Re: Chevy Rocker question

Thanks for the update.
by THE FRENCHTOWN FLYER
Sun Nov 11, 2018 8:54 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 68 F100 Upgrade suggestions
Replies: 10
Views: 251

Re: 68 F100 Upgrade suggestions

A pair of 1.02s or 1.01s will work great. My Family Truckster uses two 1.02s.
I had a couple of matched sets at one time but sold a bunch of my Autolites. I'll check if I still have a pair and PM you if I do.
by THE FRENCHTOWN FLYER
Sun Nov 11, 2018 8:47 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Chevy Rocker question
Replies: 12
Views: 206

Re: Chevy Rocker question

.. I would like to drop this line of discussion now, in pursuit of what I originally was looking for. Thank you. The picture you posted showed a rocker arm that was centered on the tip of the valve, not with pushrod guide slots / plates. Notice the two "rails" at the end designed to trap ...
by THE FRENCHTOWN FLYER
Sun Nov 11, 2018 8:36 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Plenum Intake Base Line
Replies: 14
Views: 347

Re: Plenum Intake Base Line

Lots of factors can affect how a tunnel ram system (which is essentially what we are talking about here) functions. Bigger plenum equals better top end filling; smaller plenum equals better throttle response. 294 ci shouldn't be a deal breaker as far as drag racing is concerned - it should still rev...
by THE FRENCHTOWN FLYER
Sun Nov 11, 2018 2:15 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Plenum Intake Base Line
Replies: 14
Views: 347

Re: Plenum Intake Base Line

For a "mild" drag race motor start with 60% of the cylinder volume = 180 cubic inches, and make the top plate able to add volume by the use of a spacer if you decide to build more power into the engine at a later date. Let the plenum overhang the end cylinders by 1" and put a generous...
by THE FRENCHTOWN FLYER
Sun Nov 11, 2018 2:09 pm
Forum: 240-300 "Big Block" Six Performance
Topic: "180" degree crank SIX CYLINDER hi-torque engine
Replies: 10
Views: 248

"180" degree crank SIX CYLINDER hi-torque engine

I've heard of 180 degree cranks for V8s, ostensibly to gain more low end torque for short tracks. That got me to thinking (always a dangerous thing): Since the six has two crank throws that arrive at TDC at the same time couldn't you just grind a cam that has the lobes timed to fire 1,6 / 5,2 / 3,4 ...
by THE FRENCHTOWN FLYER
Sun Nov 11, 2018 1:19 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Video of engine stumbling - ideas?
Replies: 12
Views: 644

Re: Video of engine stumbling - ideas?

Those numbers look good to me. Nothing to indicate that your misfire is due to low compression. It would have to be below about 70 psi before misfires will occur. More important than "plugs in" or "plugs out" is the cranking speed for the compression test. Like dyno numbers, its ...
by THE FRENCHTOWN FLYER
Sun Nov 11, 2018 1:11 pm
Forum: 144-250 "Small Block" Six Performance
Topic: Hillborn Injection
Replies: 12
Views: 255

Re: Hillborn Injection

I once owned an Algon fuel injection system that had a one-piece casting specifically for the Ford 240/300 so I know they are out there. The problem was the ports were too small for a race engine - I think the stacks were 1 5/8" Diameter - but it may be perfect for a street application, if you ...
by THE FRENCHTOWN FLYER
Sun Nov 11, 2018 1:06 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Carb head combustion chamber question.
Replies: 29
Views: 742

Re: Carb head combustion chamber question.

Don't use the gasket fire ring. It is too big - something like 4 3/16". Instead scribe the chambers to the block being used. Its easy enough to add .025 if you are going .050 over bore. Don't cut into the squish area. And try to find a piston that mirrors the combustion chamber or at least has ...
by THE FRENCHTOWN FLYER
Sun Nov 11, 2018 12:55 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 68 F100 Upgrade suggestions
Replies: 10
Views: 251

Re: 68 F100 Upgrade suggestions

Ditto on the Clifford 2 x 4 manifold with Autolites.

And I would opt for the EFI cast iron exhausts with a custom Y-pipe for less than the cost of coated headers without the headaches of running headers on the street
by THE FRENCHTOWN FLYER
Sun Nov 11, 2018 12:51 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Searching for Builds / Combos
Replies: 41
Views: 1704

Re: Searching for Builds / Combos

clintonvillian wrote:7300.00 ugh!

... What's wrong with us?

Folks are still building and flying bi-planes. Go figure.
by THE FRENCHTOWN FLYER
Sun Nov 11, 2018 12:44 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Big Six aluminum head update 9-14
Replies: 191
Views: 76249

Re: Big Six aluminum head update 9-14

... with brilliant chamber mixture homogenaity[sic] and lots of extra paddel[sic] wheel mixture motion... Be a little wary of paddle wheel figures vis-a-vis fast burn capabilities. It has been shown that high paddle wheel figures do not necessarily correlate to good burn characteristics. More impor...
by THE FRENCHTOWN FLYER
Thu Nov 08, 2018 9:57 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Chevy valves instead of Ford ones!
Replies: 9
Views: 316

Re: Chevy valves instead of Ford ones!

Often Chevy guys upgrade their SBC heads from 1.94 to 2.02s. If you ask around at some shops they often have lots of 1.94 "take outs" that can be had for a song. Even some that have wear can be cut down to 1.900 and reground with no loss of flow on the 300.
by THE FRENCHTOWN FLYER
Wed Nov 07, 2018 8:59 am
Forum: 240-300 "Big Block" Six Performance
Topic: Chevy valves instead of Ford ones!
Replies: 9
Views: 316

Re: Chevy valves instead of Ford ones!

I use Chevy valves all the time The extra .1" is no big deal. If you do the math you'll see the rocker arm pivot only needs to be raised about .040" to restore the correct geometry of the rocker arm.I think the '83 head had pressed in studs. My advice would be to install screw-in studs wit...
by THE FRENCHTOWN FLYER
Sun Nov 04, 2018 7:38 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Permanent 300 Six Cyl Head CFM solutions- A Work in Progress
Replies: 312
Views: 22439

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

Max_Effort wrote:...How much would it cost to make the core boxes and cast the 6 cyl head ...?


About $6500 based on ordering a couple dozen or so, based on a similar restoration project on a Marmon V 16.

Image

Including machining
by THE FRENCHTOWN FLYER
Sun Nov 04, 2018 6:18 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Permanent 300 Six Cyl Head CFM solutions- A Work in Progress
Replies: 312
Views: 22439

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

Max_Effort wrote:...How much would it cost to make the core boxes and cast the 6 cyl head ...?


About $6500 in lots of a couple of dozen.

https://farm2.staticflickr.com/1916/457 ... 11_o_d.jpg
by THE FRENCHTOWN FLYER
Sun Nov 04, 2018 5:51 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Mysterious Radical Race Engine
Replies: 10
Views: 887

Re: Mysterious Radical Race Engine

My experience is that only the square end bosses prevent installation of tie-bar lifters. On the engine shown they chose to grind away the tie bar on the end cylinders. I do not like that - instead I grind away the lower part of the boss on the block. I think the crank is a Moldex Tool piece. The he...
by THE FRENCHTOWN FLYER
Fri Nov 02, 2018 11:28 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 300 I6 EFI performance upgrades
Replies: 235
Views: 25812

Re: 300 I6 EFI performance upgrades

nice

You might want to tilt the guide "fin" more toward the center of the chamber.
Are you installing larger valves? Do that last after polishing the chambers so as not to risk nicking the seats.
by THE FRENCHTOWN FLYER
Fri Nov 02, 2018 11:00 am
Forum: 240-300 "Big Block" Six Performance
Topic: Trick to removing lifters?
Replies: 7
Views: 302

Re: Trick to removing lifters?

Another idea I haven't tried, with the block on its side slide the lifters out as far as you can, turn the block upside down, pull the cam, turn the block up and knock the lifters down and out. That is what I have done on some blocks that were especially heavily varnished up. I first tugged them up...
by THE FRENCHTOWN FLYER
Thu Nov 01, 2018 9:57 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Video of engine stumbling - ideas?
Replies: 12
Views: 644

Re: Video of engine stumbling - ideas?

True dat.
But I always have my finger with me and the spit is a renewable resource.

BTW Dr johnny fever, I loved you on WKRP in Cincinnati.
by THE FRENCHTOWN FLYER
Thu Nov 01, 2018 10:58 am
Forum: 240-300 "Big Block" Six Performance
Topic: Ford big cam high compression build
Replies: 2
Views: 243

Re: Ford big cam high compression build

Race engine or streetable engine?

A high compression streetable engine may have 9.5:1 CR and .500 lift cam.
A high compression race engine may have 15:1 CR and a .700 lift cam.

Let us know your intentions.
by THE FRENCHTOWN FLYER
Wed Oct 31, 2018 5:59 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Video of engine stumbling - ideas?
Replies: 12
Views: 644

Re: Video of engine stumbling - ideas?

A friend had a truck - Chevy V8 - that had a misfire. He asked me to help him find the cause. I told him to start it up. After about a minute I licked my finger and briefly tapped it on each exhaust port. On seven of the cylinders when I did that there was a "TSSSsss" sound accompanied by ...
by THE FRENCHTOWN FLYER
Wed Oct 31, 2018 5:50 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Mysterious Radical Race Engine
Replies: 10
Views: 887

Re: Mysterious Radical Race Engine

In addition, a mold could not be made from the head and used to cast a one-piece aluminum part because the mold has to be "scaled up" to account for the rate of thermal expansion of the aluminum. Otherwise when it cooled it would be too small.

Go to advanced search