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2018 Contributors:
StarDiero75, curts56, DannyG, B RON CO, wsa111, Captainslow42, falconcritter
Econoline, THE FRENCHTOWN FLYER, 95FordFleetside, turbo6, Max_Effort, WorldChampGramp
cr_bobcat, C.S.Designs, pmuller9, gus91326, rwbrooks50, rocklord, drag-200stang, Big64my79Effie, CNC-Dude, gb500

2019 Contributors:
NJwpod, 1strodeo, mightynorseman, maxtrux, 6d7coupe, broncr, Phase3, 68Flareside240

Unknown->> S.Wickett, D.Blaine - Please PM me (1966Mustang) and lemme know who you are!

Search found 5704 matches

by THE FRENCHTOWN FLYER
Sat Mar 23, 2019 1:45 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Stuck valve locks
Replies: 15
Views: 225

Re: Stuck valve locks

I think there was a change to the block casting. I think the front oil galley pipe tap was converted to a blind hole with the metric threads for the knock sensor. Knock sensor placement is part science, part experimental witchcraft, based on finding the various nodes of the myriad components' freque...
by THE FRENCHTOWN FLYER
Sat Mar 23, 2019 1:38 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 240 mods update
Replies: 12
Views: 124

Re: 240 mods update

BigBlue94 wrote:Before swapping rear gears, find some tires that are about 2" smaller in diameter and mount those up...

Maybe try some mini-spares?
by THE FRENCHTOWN FLYER
Sat Mar 23, 2019 11:29 am
Forum: 240-300 "Big Block" Six Performance
Topic: Power glide adapter
Replies: 10
Views: 128

Re: Power glide adapter

Found it

Image

Image
by THE FRENCHTOWN FLYER
Sat Mar 23, 2019 11:16 am
Forum: 240-300 "Big Block" Six Performance
Topic: Power glide adapter
Replies: 10
Views: 128

Re: Power glide adapter

OOPs - The Chevy pins are 5/8, not 3/4. Drill and tap the plate to install 3/8 studs for the PG. I flush grind the end of each stud to pick up every last scintilla of thread engagement to the plate, and use permanent Loctite to install them. pmuller9, Do you happen to have the starter motor X-Ys and...
by THE FRENCHTOWN FLYER
Sat Mar 23, 2019 11:05 am
Forum: 240-300 "Big Block" Six Performance
Topic: 240 mods update
Replies: 12
Views: 124

Re: 240 mods update

FTF.... did you have the T170 cast iron trans? I want to thank all the guys who encouraged me to work with my 240 and all the advice given. Yours years of knowledge are greatly appreciated!! Uh...I think so? It was the one that looked like your typical Top-loader performance 4-speed with an iron ca...
by THE FRENCHTOWN FLYER
Sat Mar 23, 2019 10:49 am
Forum: 240-300 "Big Block" Six Performance
Topic: Power glide adapter
Replies: 10
Views: 128

Re: Power glide adapter

Yes, I make my own bellhousing adapters. I have the coordinates for both the Ford bolt hole locations and dowel centers and the Chevy bolt hole locations and dowel centers. I think the locations should be spotted in within .010" tolerance. The dowel pins fortunately are far enough apart so as t...
by THE FRENCHTOWN FLYER
Fri Mar 22, 2019 9:49 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 240 mods update
Replies: 12
Views: 124

Re: 240 mods update

Nice record keeping. You have a large task at hand. I base this based on an Econoline van I had with 4 spd OD trans and 3.00 gears. On flat land here in the Midwest it pulled my tandem axle open race car trailer with no problems at highway speeds. One year we towed to Bristol TN for a race. Boy, I t...
by THE FRENCHTOWN FLYER
Fri Mar 22, 2019 9:16 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Power glide adapter
Replies: 10
Views: 128

Re: Power glide adapter

...I found a flex plate for a ford small block to mate to a power glide. Will this work for the 300? Thanks There are several key points to consider: - O.D. and tooth count on the ring gear - Bolt pattern of the powerglide torque converter - flex plate (im)balance There are two ring gear diameters ...
by THE FRENCHTOWN FLYER
Thu Mar 21, 2019 10:23 pm
Forum: 240-300 "Big Block" Six Performance
Topic: need help troubleshooting mc 2150
Replies: 5
Views: 84

Re: need help troubleshooting mc 2150

Also check both throttle plates to make sure both are closed completely at exactly the same degree. Requires carb removal and retracting the curb idle screw. Maybe at some point in the carb's life the throttle shaft froze and somebody twisted it to the point of damage to the shaft.
by THE FRENCHTOWN FLYER
Thu Mar 21, 2019 6:39 pm
Forum: 240-300 "Big Block" Six Performance
Topic: need help troubleshooting mc 2150
Replies: 5
Views: 84

Re: need help troubleshooting mc 2150

You can run the engine with the top of the carb off. Watch the fuel level to make sure it is stable and does not creep up. Note the level at which booster flow initiates. Be careful - keep an extinguisher handy.
by THE FRENCHTOWN FLYER
Thu Mar 21, 2019 3:28 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Rebuilding 240
Replies: 42
Views: 1344

Re: Rebuilding 240

IRN?
IaRaN?
IARAN?
I'm so confused...
by THE FRENCHTOWN FLYER
Wed Mar 20, 2019 8:22 pm
Forum: 240-300 "Big Block" Six Performance
Topic: compression
Replies: 119
Views: 3575

Re: compression

Don't cut the dish too close to the backside of the ring groove or you will be courting a failure of the land. Try to stay close to the OEM spacing.
by THE FRENCHTOWN FLYER
Wed Mar 20, 2019 8:14 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Stuck valve locks
Replies: 15
Views: 225

Re: Stuck valve locks

I use a brass hammer at a 45 degree oblique angle on the edge of the retainers.
Always works for me - even with very high load roller cam springs.
by THE FRENCHTOWN FLYER
Tue Mar 19, 2019 4:15 pm
Forum: 240-300 "Big Block" Six Performance
Topic: wanted to buy
Replies: 8
Views: 168

Re: wanted to buy

... now sooooooo tempted to remove the top chop down the windshield and do a oval track style cage...dunno..anyway 3:55 8.8 and 4 or 5 spd stick should be fun... If you do remove the top you can re-sell it to somebody doing a full chop. It is much easier to do a roof chop if you start out with an e...
by THE FRENCHTOWN FLYER
Tue Mar 19, 2019 10:42 am
Forum: 240-300 "Big Block" Six Performance
Topic: wanted to buy
Replies: 8
Views: 168

Re: wanted to buy

...I just want my 2500 lb car with 4spd and 3.55 gears to run hard enough to be fun so assuming a common short block build I think I will need a mildly ported big valve head that will handle about .550 lift guide plates and roller rockers where do I start shopping?...as for intake since it is a rat...
by THE FRENCHTOWN FLYER
Mon Mar 18, 2019 8:29 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 300 I6 EFI performance upgrades
Replies: 262
Views: 37407

Re: 300 I6 EFI performance upgrades

1.94s will fit. 2.02s will fit but there is diminishing returns from going bigger.
I like 1.90.
by THE FRENCHTOWN FLYER
Mon Mar 18, 2019 11:50 am
Forum: 240-300 "Big Block" Six Performance
Topic: compression
Replies: 119
Views: 3575

Re: compression

Easy enough to check by inserting a pin and measuring the distance from the pin diameter to the opposing skirt. It should be the same side-to-side.
by THE FRENCHTOWN FLYER
Mon Mar 18, 2019 9:05 am
Forum: 240-300 "Big Block" Six Performance
Topic: compression
Replies: 119
Views: 3575

Re: compression

Do those pistons have a wrist pin offset? A pin offset will make for a noisy piston if they are installed "backwards". The fact that all four valve pockets are the same size suggests maybe there is no offset.
by THE FRENCHTOWN FLYER
Mon Mar 18, 2019 8:48 am
Forum: 240-300 "Big Block" Six Performance
Topic: compression
Replies: 119
Views: 3575

Re: compression

54-4x4 wrote:Maybe I should look at boring out the 352 pins... taper boring if that is feasible[sp]?

That will work. You'll need a carbide cutter. Keep a little flat on the end for the pressing arbor to bear against.
by THE FRENCHTOWN FLYER
Sun Mar 17, 2019 10:25 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 300 torque build 85 Bronco
Replies: 152
Views: 10566

Re: 300 torque build 85 Bronco

nice
Before fire-up I recommend spinning up the oil pump to get oil pressure up. I use a 460 hex pump quill in an electric drill.
by THE FRENCHTOWN FLYER
Sun Mar 17, 2019 5:15 pm
Forum: 240-300 "Big Block" Six Performance
Topic: compression
Replies: 119
Views: 3575

Re: compression

There's a lot of meat around the pin bosses that will allow you to take off a gram, if you so desire to make them all perfect. Maybe wait 'til the dishes are in.
by THE FRENCHTOWN FLYER
Sun Mar 17, 2019 3:31 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Turboing a stock 300, how to make it last?
Replies: 16
Views: 386

Re: Turboing a stock 300, how to make it last?

"This engine has a problem. Chrome is from the piston rings and it's very high at 47 ppm. That may show a stuck or broken piston ring. I find this curious. The 300 didn't use chrome rings. They use iron rings with a moly-faced top ring. Maybe they were changed out somewhere in its life??? Shad...
by THE FRENCHTOWN FLYER
Sat Mar 16, 2019 9:03 pm
Forum: 240-300 "Big Block" Six Performance
Topic: compression
Replies: 119
Views: 3575

Re: compression

good job
nice pics too
I like the full barrel design of the 352 piston. Very durable
thanks
by THE FRENCHTOWN FLYER
Thu Mar 14, 2019 2:50 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Searching for Builds / Combos
Replies: 46
Views: 2788

Re: Searching for Builds / Combos

I would have guessed 38* was too much. Was there a difference between that and the 32* on the dyno?
by THE FRENCHTOWN FLYER
Thu Mar 14, 2019 10:54 am
Forum: 240-300 "Big Block" Six Performance
Topic: Where to mount chains to remove/install 1993 engine?
Replies: 8
Views: 197

Re: Where to mount chains to remove/install 1993 engine?

On some engine durability tests in vehicles we at Ford had to run periodic checks of critical engine specs - valve tip heights, spring heights, etc - and on the Econoline vans with Modular V8s the first order of business when performing these tests was ..."remove the body from the chassis."...
by THE FRENCHTOWN FLYER
Wed Mar 13, 2019 9:48 am
Forum: 240-300 "Big Block" Six Performance
Topic: Clutch Options
Replies: 8
Views: 187

Re: Clutch Options

The Mustang clutch increases clamping force as RPMs go up. So that gives a light pedal for light driving and lots of clamping force for hi-RPM launches. So it seems logical to me that with high boost at low revs you could momentarily overpower it with the turbo.
by THE FRENCHTOWN FLYER
Tue Mar 12, 2019 9:49 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Clutch Options
Replies: 8
Views: 187

Re: Clutch Options

Is there any oil in the bellhousing area on the outside of the truck? If there is a rear main seal leak or leak past the crank flange bolts that is a quick way to ruin a clutch assembly due to oil contamination. I'd trust tha OEM clutch, it is probably the same basic unit used on the big V8 (with mi...
by THE FRENCHTOWN FLYER
Tue Mar 12, 2019 3:12 pm
Forum: 240-300 "Big Block" Six Performance
Topic: C5AE rods
Replies: 35
Views: 591

Re: C5AE rods

So I’ve been running some numbers with the Wallace racing calculators, and found something interesting. The engine parameters calculator puts the redline rpm for the factory 240 rod length over 11k rpm. Is that what you meant by the only thing limiting you is the valve springs? Is that possible wit...
by THE FRENCHTOWN FLYER
Mon Mar 11, 2019 12:58 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Permanent 300 Six Cyl Head CFM solutions- A Work in Progress
Replies: 412
Views: 38228

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

Water/meth injection works great.
Until it doesn't.
I'd maybe run a dyno test both ways and have a fall-back schedule baked into your software.
by THE FRENCHTOWN FLYER
Mon Mar 11, 2019 12:00 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 1968 Ford F250 with 4.9 ltr six
Replies: 8
Views: 393

Re: 1968 Ford F250 with 4.9 ltr six

I really like that air cleaner - reminiscent of the old Ford FE multi-carbed air cleaners. With a different base it would surely work and look good with two 2150 2Vs on a Clifford 2x4 manifold.

(Your chrome dipstick looks like it has a light bulb on top LOL.)
by THE FRENCHTOWN FLYER
Mon Mar 11, 2019 11:49 am
Forum: 240-300 "Big Block" Six Performance
Topic: Permanent 300 Six Cyl Head CFM solutions- A Work in Progress
Replies: 412
Views: 38228

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

Given the anticipated wait, I'm leaning towards putting my current engine back together and in, breaking in the new cam with the same 390 carb, then converting to Sniper TBFI, then having it dyno'd, and just drive it for a month or whatever. Then swap the Jr on when it gets here, and go back to the...
by THE FRENCHTOWN FLYER
Sun Mar 10, 2019 10:42 am
Forum: 240-300 "Big Block" Six Performance
Topic: compression
Replies: 119
Views: 3575

Re: compression

OK, now I'm on the same page as you are.
by THE FRENCHTOWN FLYER
Sat Mar 09, 2019 7:14 pm
Forum: 240-300 "Big Block" Six Performance
Topic: compression
Replies: 119
Views: 3575

Re: compression

I'd be surprised if you have to deck the block further if you are using 352 FE pistons. You may have to cut the piston tops to get to zero deck.
by THE FRENCHTOWN FLYER
Fri Mar 08, 2019 6:31 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 1968 Ford F250 with 4.9 ltr six
Replies: 8
Views: 393

Re: 1968 Ford F250 with 4.9 ltr six

The 240 carb may be smaller. BUT Do not confuse CFM capability with the A/F ratio of the carb. Re-jetting the carb will not increase air flow, which you need. It will only make the mixture fatter, which you do not necessarily need. Think of the carb as a chocolate milkshake. The amount of chocolate ...
by THE FRENCHTOWN FLYER
Fri Mar 08, 2019 3:03 pm
Forum: 240-300 "Big Block" Six Performance
Topic: EFI Exhaust Manifold Conversion
Replies: 14
Views: 410

Re: EFI Exhaust Manifold Conversion

A source of heated carb inlet air is needed to prevent carb icing in cold damp conditions. It would help to fashion some sort of heat stove on one of the exhaust manifolds. Also if your carb had a hot air tube from the exhaust to choke housing you will need to fashion one. Use bendable copper tube w...
by THE FRENCHTOWN FLYER
Fri Mar 08, 2019 2:55 pm
Forum: 240-300 "Big Block" Six Performance
Topic: EFI Exhaust Manifold Conversion
Replies: 14
Views: 410

Re: EFI Exhaust Manifold Conversion

Where the original exhaust bolted to the intake - three long bolts hold them together - you do not have to do anything to block off the cavity in the intake. Just install the EFI exhaust manifolds leaving that passageway open. Some intake manifolds have a hole adjacent to the carb mounting surface (...
by THE FRENCHTOWN FLYER
Thu Mar 07, 2019 6:26 pm
Forum: 240-300 "Big Block" Six Performance
Topic: compression
Replies: 119
Views: 3575

Re: compression

In the era of the 240 / 300 it was common practice by the assembly plants to machine the raw castings leaving a "little extra" material on the casting finished machined surfaces, like the cylinder block deck and the head surface. That way if something went awry - a dull tool or an incorrec...
by THE FRENCHTOWN FLYER
Wed Mar 06, 2019 7:58 pm
Forum: 240-300 "Big Block" Six Performance
Topic: compression
Replies: 119
Views: 3575

Re: compression

10 inches - [1/2 the stroke] - [rod C-C distance] = compression height at zero deck.

10-3.98/2 - 6.21= 1.800"

For a 240 rod


10-3.98/2-6.79= 1.220"
by THE FRENCHTOWN FLYER
Tue Mar 05, 2019 12:46 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 300 I6 EFI performance upgrades
Replies: 262
Views: 37407

Re: 300 I6 EFI performance upgrades

I heard back from my machinist regarding cutting the seats for the SI Valves 1.94/1.60" oversize valves. He had no problem cutting the 1.60" exhaust valves, but says that the 1.94" intake valves will need the old seat reamed out and a larger one installed. I wanted to get some input ...
by THE FRENCHTOWN FLYER
Tue Mar 05, 2019 12:41 pm
Forum: 240-300 "Big Block" Six Performance
Topic: First post- Seeking general guidance
Replies: 4
Views: 301

Re: First post- Seeking general guidance

The E1TE casting number on the block would indicate a 1981 engine and is obviously not the original for the 1987 truck? Is that correct? Paul, This is a common misconception. The casting number indicates the latest design level of that particular component - in this case, the block casting - and do...
by THE FRENCHTOWN FLYER
Sun Mar 03, 2019 3:37 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 300 torque build 85 Bronco
Replies: 152
Views: 10566

Re: 300 torque build 85 Bronco

You can probably contact the rocker arm manufacturer and just replace the fulcrum in your existing rocker arm.
by THE FRENCHTOWN FLYER
Sun Mar 03, 2019 2:46 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Lunati cams for 300
Replies: 13
Views: 474

Re: Lunati cams for 300

I ...am considering pulling the head & doing some lite P&P work on the intake side and 3 angle valve job or would that be a waste for my use? Here's some advice: ANY valve job should involve using three angles. At least three angles. This is required for several reasons. The width of the se...
by THE FRENCHTOWN FLYER
Sun Mar 03, 2019 2:15 pm
Forum: 240-300 "Big Block" Six Performance
Topic: C4 trans combo for a 300 L6
Replies: 6
Views: 233

Re: C4 trans combo for a 300 L6

I'm no trans expert. I have all my transmissions done professionally. But from what I gather talking with my very knowledgeable trans guy pan fill units are preferred since they have an extra array of bolts in the front of the case - one array to hold the bell to the trans case and the other array t...
by THE FRENCHTOWN FLYER
Thu Feb 28, 2019 7:59 pm
Forum: 240-300 "Big Block" Six Performance
Topic: did factories degree the engine cams during production
Replies: 10
Views: 334

Re: did factories degree the engine cams during production

Also, the same cam in an engine with more displacement will perform effectively as a "milder" cam than when it was in the smaller engine.
by THE FRENCHTOWN FLYER
Thu Feb 28, 2019 4:25 pm
Forum: 240-300 "Big Block" Six Performance
Topic: did factories degree the engine cams during production
Replies: 10
Views: 334

Re: did factories degree the engine cams during production

Well, of course, "It wouldn't hoit". There is always a chance the existing parts - stock or later aftermarket replacement parts - are incorrectly machined. Here is a hypothetical question: What if the cam degrees in one or two degrees "off"? What do you do then? What if it is act...
by THE FRENCHTOWN FLYER
Wed Feb 27, 2019 8:11 pm
Forum: 240-300 "Big Block" Six Performance
Topic: did factories degree the engine cams during production
Replies: 10
Views: 334

Re: did factories degree the engine cams during production

sdiesel wrote:is there such power potential lurking in our 300 cams?

No. The stock cam has gentle ramps and low lift for greatest durability and fuel efficiency. The best thing you can do to give your stock cammed 300 a boost is Chevy six 1.76:1 rocker arms. And of course reduced exhaust system backpressure.
by THE FRENCHTOWN FLYER
Wed Feb 27, 2019 2:03 pm
Forum: 240-300 "Big Block" Six Performance
Topic: plenum size and why does it matter?
Replies: 29
Views: 758

Re: plenum size and why does it matter?

Here's another one I did earlier with longer runners for a lower RPM application and with stub pipes that enables it to be used on either a stock U-flow head or a crossflow head.

Image
by THE FRENCHTOWN FLYER
Wed Feb 27, 2019 1:50 pm
Forum: 240-300 "Big Block" Six Performance
Topic: plenum size and why does it matter?
Replies: 29
Views: 758

Re: plenum size and why does it matter?

Any body have any drawings,pictures or ideas on what might the ideal setup?Maybe the Offy and Clifford are already there? https://img.photobucket.com/albums/v608/6racer/intrnr02_zpscdbd222e.jpg http://img.photobucket.com/albums/v608/6racer/intrnr05_zps1fe52166.jpg http://img.photobucket.com/albums/...
by THE FRENCHTOWN FLYER
Wed Feb 27, 2019 1:31 pm
Forum: 240-300 "Big Block" Six Performance
Topic: did factories degree the engine cams during production
Replies: 10
Views: 334

Re: did factories degree the engine cams during production

No, not on the 300 six. However on some of the OHC engines the cam sprockets are not indexed to the cam - they are merely retained by the sprocket hold down bolt. In that case they are precisely fixtured before the bolt is tightened, insuring correct alignment. Since the performance of the engine an...

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