Click Here -> Please Consider Making a PayPal Contribution to the FordSix Forum!
2019 Contributors:
NJwpod, 1strodeo, mightynorseman, maxtrux, 6d7coupe, broncr, Phase3, 68Flareside240, bmbm40, mustang6, WorldChampGramp, justintendo, BigBlue94, ags290, motorsickle1130, Rooster, ousooner919, ethanperry, rzcrisis, DoctorC, jamyers, Motorboy, fastpat, Silverback280, chad, drag-200stang, THE FRENCHTOWN FLYER, Jimmys61falcon, rjonah, Sooshi, Robert92867, Invectivus


PLEASE TEST ON http://dev.fordsix.com

<<<***PLEASE READ*** New Site Update >>>

Search found 553 matches

by guhfluh
Mon Nov 23, 2020 11:10 am
Forum: 240-300 "Big Block" Six Performance
Topic: Some maybe exciting news from Holley...
Replies: 10
Views: 224

Re: Some maybe exciting news from Holley...

bubba, Do you happen to know if the progression distributors can be programmed with a negative slope to parts of the advance curve? Some engines need that. Now all I would need is a smart phone... French Town Flyer, yes I believe they can be programed that way and they have a real time data display...
by guhfluh
Sat Nov 21, 2020 4:59 pm
Forum: Turbo, Supercharger, and Nitrous
Topic: turbo 200 build
Replies: 194
Views: 52949

Re: turbo 200 build

Bottom line! You can't have low rpm torque or turbo response on a 200 cid engine when the intake valve doesn't close until somewhere after 81 degrees ABDC when the piston is almost half way up the cylinder no matter what the external components are doing or the tune-up. Agreed. Only minor improveme...
by guhfluh
Sat Nov 21, 2020 4:45 pm
Forum: Turbo, Supercharger, and Nitrous
Topic: turbo 200 build
Replies: 194
Views: 52949

Re: turbo 200 build

Adding a second wastegate will not help. At all. Even if you call it a throttle body.
by guhfluh
Fri Nov 20, 2020 10:24 pm
Forum: Turbo, Supercharger, and Nitrous
Topic: turbo 200 build
Replies: 194
Views: 52949

Re: turbo 200 build

My thoughts: I wouldn't be concerned about overspeeding the turbo at the boost and RPM you run. Boost onset could possibly be improved if wastegate control type is poor. If it is being controlled by the HP, a properly set up solenoid and proper (solenoid)tuning, it won't get better on gas unless the...
by guhfluh
Wed Nov 18, 2020 8:58 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Piston & connecting rods
Replies: 40
Views: 6318

Re: Piston & connecting rods

My experience is that rods usually fail in tension - that is, stretch, not column buckling (compression) or bending. Having said that I do not feel a boosted engine is significantly harder on rods. The rod will fail when the crank is pulling it downward trying to stretch it apart, not when increase...
by guhfluh
Wed Nov 18, 2020 8:20 pm
Forum: Turbo, Supercharger, and Nitrous
Topic: Merrylegs
Replies: 63
Views: 8173

Re: Merrylegs

Thanks Guhfluh. I have never paid attention to autos before. It’s surprising hard to get solid information on them. Who do you suggest I talk to? I'm certainly not an expert on them, but for a 4r70w, Silver Fox Transmission seems to be very knowledgeable and Performance Automatic has a decent reput...
by guhfluh
Wed Nov 18, 2020 9:56 am
Forum: 240-300 "Big Block" Six Performance
Topic: Piston & connecting rods
Replies: 40
Views: 6318

Re: Piston & connecting rods

I saw on another site that the 300 came with forged rods, and those would be better for a boosted build over the longer 240 rods. Is there any truth to that? Are there any part numbers available for those rods? ALL 300 rods and ALL 240 rods are forged. FTF, ever had one fail? What's the comfortable...
by guhfluh
Wed Nov 18, 2020 9:42 am
Forum: Turbo, Supercharger, and Nitrous
Topic: Merrylegs
Replies: 63
Views: 8173

Re: Merrylegs

I decided to spend the 30 bucks on David Vizard's book on porting before I got moving on the head work. I'm still tossing around different tooling options, but it sounds like most people spring for the long nose die grinder with a variable speed control over something like a Foredom set up. Hearing...
by guhfluh
Mon Nov 09, 2020 10:40 am
Forum: 240-300 "Big Block" Six Performance
Topic: Crank/Camshaft position trigger
Replies: 44
Views: 927

Re: Crank/Camshaft position trigger

That RFI issue still exists even with the Holley HyperSpark... https://hosting.photobucket.com/images/cc501/xecute6/sn_fox351w_20200808_124228.jpg Adding aluminum foil looked after the RFi https://hosting.photobucket.com/images/cc501/xecute6/sn_fox351w_20200613_124245.jpg Permeant solution, aluminu...
by guhfluh
Thu Nov 05, 2020 9:38 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Crank/Camshaft position trigger
Replies: 44
Views: 927

Re: Crank/Camshaft position trigger

The crank sensor is VR (of course the important one is VR :roll: ) and the cam is a hall effect sensor. It's a waste spark system so the cam sensor is not needed for operation but it's nice. After reading your link, you definitely need to properly route and shield the VR wiring. It may not be the a...
by guhfluh
Thu Nov 05, 2020 9:15 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Crank/Camshaft position trigger
Replies: 44
Views: 927

Re: Crank/Camshaft position trigger

Thanks guhfluh for your reply. I posted the part about using the TFI PIP signal for coil per spark plug as being a problem because I originally suggested to Nick (the OP) that it would be a good solution. My mistake with an apology No need for an apology. Everything you said was spot on, I was just...
by guhfluh
Thu Nov 05, 2020 11:41 am
Forum: 240-300 "Big Block" Six Performance
Topic: Crank/Camshaft position trigger
Replies: 44
Views: 927

Re: Crank/Camshaft position trigger

The PIP signal from the distributor module is a fully buffered low impedance square wave that should swing almost the same amplitude as the battery voltage. The input to the EFI unit should have a high threshold with several volts of hysteresis. The combination will give a high immunity to interfer...
by guhfluh
Thu Nov 05, 2020 11:35 am
Forum: 240-300 "Big Block" Six Performance
Topic: Crank/Camshaft position trigger
Replies: 44
Views: 927

Re: Crank/Camshaft position trigger

The PIP signal from the distributor module is a fully buffered low impedance square wave that should swing almost the same amplitude as the battery voltage. The input to the EFI unit should have a high threshold with several volts of hysteresis. The combination will give a high immunity to interfer...
by guhfluh
Wed Nov 04, 2020 1:33 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Offy 'C' failed plenum divider
Replies: 32
Views: 828

Re: Offy 'C' failed plenum divider

I have always thought air velocity through the venturi is what affects the fuel ratio. Less velocity, less fuel and leaner. I have found my truck runs much richer without an air cleaner than with it and figured it was restricting airflow and velocity, but not certain that's what is really happening.
by guhfluh
Wed Nov 04, 2020 1:20 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Crank/Camshaft position trigger
Replies: 44
Views: 927

Re: Crank/Camshaft position trigger

Nick This was posted on the Haltech Forum. Not sure if my original suggestion to use the PIP signal is a good way to provide the cam sync signal. It says in Haltech manual the following "Use for Ford PIP distributors. Due to the acceleration of the engine during startup, the unique PIP tooth c...
by guhfluh
Mon Nov 02, 2020 9:08 am
Forum: 240-300 "Big Block" Six Performance
Topic: So, what is actually possible with a LS headed 300?
Replies: 8
Views: 282

Re: So, what is actually possible with a LS headed 300?

If you want to know what the power and RPM could be for a LS head, I'd compare the same bore and stroke LS as the 300. Find a 408 LS with the same head and cam specs you like and that would be the RPM the 300 would make all of its power points at, then multiply the power numbers by 3/4 the cylinders...
by guhfluh
Mon Nov 02, 2020 8:49 am
Forum: 240-300 "Big Block" Six Performance
Topic: Crank/Camshaft position trigger
Replies: 44
Views: 927

Re: Crank/Camshaft position trigger

:beer: :thanks: Sounds like the right one. I was pretty sure no CPS was used for the EECV OBDii for 1996. :hmmm: Guess I was wrong. From what I've heard, it was used only for missfire detection, but it would seem to me to be a greatly missed opportunity to be used for accurate spark in conjunction ...
by guhfluh
Mon Nov 02, 2020 2:05 am
Forum: 240-300 "Big Block" Six Performance
Topic: Crank/Camshaft position trigger
Replies: 44
Views: 927

Re: Crank/Camshaft position trigger

Rather than use the later TFi, you can use the stock Duraspark, and control the spark with an early 1980 to 1985 Crank Position sensor with 3 prongs. (You have to loose a prong for a straight six. The truck and passenger stuff was indexed around that nominal 6-1/2" Crank Position Sensor with f...
by guhfluh
Sun Oct 25, 2020 4:31 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Distributor/Timing/Advance question
Replies: 14
Views: 500

Re: Distributor/Timing/Advance question

You will need a ballast resistor with the points, so they don't burn up. They are only designed to run on 12v when starting, then 6v after.

The points distributor works real well with an electronic conversion like Pertronix and will run on full time 12v after.

I only see the first picture.
by guhfluh
Sun Oct 25, 2020 4:24 pm
Forum: 240-300 "Big Block" Six Performance
Topic: ‘Performance’ mufflers
Replies: 7
Views: 334

Re: ‘Performance’ mufflers

Do you have a tip on the tail pipe? What size and angle if so? A larger tip is just a megaphone and I believe the angle may make it worse. Where does the tail pipe exit with relation to the bed side fender? If it doesn't exit far enough out from underneath the bed, it makes for much worse reverb and...
by guhfluh
Sun Oct 25, 2020 3:45 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 400 hp I6
Replies: 19
Views: 967

Re: 400 hp I6

Effective for its purpose, which was reduced NVH at the lowest price possible. Chrysler of the day even removed the fuel rail pressure test ports to save a few cents per engine. Probably not doing anything appreciable for high power and RPM cap walk, but I've also noticed the same type of flimsy gir...
by guhfluh
Tue Oct 20, 2020 11:09 pm
Forum: Turbo, Supercharger, and Nitrous
Topic: '76 F250 Turbo Build
Replies: 12
Views: 597

Re: '76 F250 Turbo Build

MS3(as well as MS2)code is supposed to be able to decode the signature PIP signal for sequential injection and timing. For the 4.9L, this would be arguably the 1996 model year only, but i have yet to find someone who has used it on the 4.9l, only the more common V8 and don't know if it would cause a...
by guhfluh
Wed Sep 30, 2020 2:23 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Beginner 300 moderate rebuild
Replies: 39
Views: 4001

Re: Beginner 300 moderate rebuild

*Treed. Some was answered. I'm not sure why the head was removed to check the cam, but reusing the headgasket is not recommended with a composite gasket. Sealing of the oil and water ports is the concern, as when torqued then removed, it usually leaves portions of the sealer and or gasket stuck to t...
by guhfluh
Mon Sep 28, 2020 7:12 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Will The Ford 300 Inline Six Start After Sitting For 20 Years? - Engine Power S7, E14
Replies: 14
Views: 707

Re: Will The Ford 300 Inline Six Start After Sitting For 20 Years? - Engine Power S7, E14

I did watch the video of the white engine. It likely will have no special parts inside. No idea about special timing gears as mentioned. Very unlikely it has a forged crank, and no HD manifold obviously. I've disassembled 2 of these, never finding anything that was not pickup truck stock. One had 4...
by guhfluh
Sun Sep 27, 2020 8:39 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Will The Ford 300 Inline Six Start After Sitting For 20 Years? - Engine Power S7, E14
Replies: 14
Views: 707

Re: Will The Ford 300 Inline Six Start After Sitting For 20 Years? - Engine Power S7, E14

I'm betting they'll cheap out on the build again and won't really build it correctly for power. It'll be the same low RPM, low power build they did the last two times at best.

I haven't watched the video yet though...
by guhfluh
Sun Sep 27, 2020 8:21 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Listing of known engine accoutrements needing an entrepreneur
Replies: 22
Views: 1288

Re: Listing of known engine accoutrements needing an entrepreneur

I still do not quite understand the problem. Roller vs roller, solid mechanical vs hydraulic. Both are utilizing link bars, not v8 factory dog bone and spider retainer. Both utilize the factory oil passage in the block for oiling. No reduced base circle cam is used to allow for a factory hydraulic r...
by guhfluh
Sun Sep 27, 2020 7:23 pm
Forum: 240-300 "Big Block" Six Performance
Topic: ATI/Fluidampr on a 300
Replies: 7
Views: 750

Re: ATI/Fluidampr on a 300

sixtseventwo4d wrote:Pioneer offers 2 different balancers for the 300 for use with serpentine. [imagecap]https://www.pioneerautoinc.com/engine/harmonic-balancers/harmonic-balancer-6919[/imagecap]

One should be for 1996 only with the crank trigger and the other for all other years with serpentine belt.
by guhfluh
Sat Sep 26, 2020 4:58 pm
Forum: 240-300 "Big Block" Six Performance
Topic: A whole new type of problem
Replies: 13
Views: 540

Re: A whole new type of problem

P.S. I don't know the exact effect it will have, but the coil internal ohm needs to be matched to the ignitor. V8 coils will NOT always work correctly. I knew this before hand and was still sent the incorrect coil and didn't find out until after install and very, very weak spark. I ended up just buy...
by guhfluh
Sat Sep 26, 2020 4:54 pm
Forum: 240-300 "Big Block" Six Performance
Topic: A whole new type of problem
Replies: 13
Views: 540

Re: A whole new type of problem

The Load-o-matic 240 distributor should be rock steady without any vacuum applied, as it only gives any advance above base with a properly functioning and unique to the 240 Autolite 1101 carb. If it's ever run to either manifold or ported vacuum, it will not give the proper timing. It has to have ve...
by guhfluh
Wed Sep 23, 2020 9:58 pm
Forum: 240-300 "Big Block" Six Performance
Topic: A whole new type of problem
Replies: 13
Views: 540

Re: A whole new type of problem

Curious if this is a 240 or 300, what actual distributor model is and how the Pertronix part number was matched to the distributor. I purchased mine quite a few years ago, but it was a bit of a process to verify for certain I ordered the correct one. I had a couple of issues with mine for a 68 300 A...
by guhfluh
Wed Sep 23, 2020 9:57 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Listing of known engine accoutrements needing an entrepreneur
Replies: 22
Views: 1288

Re: Listing of known engine accoutrements needing an entrepreneur

THE FRENCHTOWN FLYER wrote:There is no provision on the block for a hydraulic roller tappet.

I'm not sure I understand what provision it is that would be needed that wouldn't be with a mechanical roller?
by guhfluh
Wed Sep 23, 2020 9:15 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Listing of known engine accoutrements needing an entrepreneur
Replies: 22
Views: 1288

Re: Listing of known engine accoutrements needing an entrepreneur

BigBlue94 wrote:
Schneider offers custom roller cams as well. Though i believe only solid lifter rollers, not hydraulic.

I've often wondered why that might be. Anyone have an idea why?
by guhfluh
Wed Sep 23, 2020 6:11 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 238* @ .050" Crane, what comp?
Replies: 7
Views: 441

Re: 238* @ .050" Crane, what comp?

I'm assuming you mean mine? I'm just dreaming, theorizing and contemplating, but... End goal dream would be port injected lower EFI manifold with box top and single entry throttle body. Home ported 240 head, deshrouded, possible Manley Pro Flo 1.94/1.60 SBC valves, Harland rockers. Bottom end would ...
by guhfluh
Sat Sep 19, 2020 11:53 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 238* @ .050" Crane, what comp?
Replies: 7
Views: 441

Re: 238* @ .050" Crane, what comp?

Thanks. I understand it's not a "turbo cam" I am just daydreaming and looking to learn. I've been poking numbers into online calculators and the specs just don't seem to add up to the Crane catalog claims of 11-12.5:1 static CR and 6500rpm, unless race gas and a high flowing head. That's w...
by guhfluh
Sat Sep 19, 2020 5:47 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 238* @ .050" Crane, what comp?
Replies: 7
Views: 441

238* @ .050" Crane, what comp?

Anyone actually use the Crane cam H-238/3347-8 (500641) .539”/.539” 238/238 294/294 108deg?

Curious what compression should be best for it in a N/A build on 93 octane. And again if a turbo application.
by guhfluh
Mon Aug 31, 2020 2:30 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Cylinder heads valves and rockers
Replies: 71
Views: 11952

Re: Cylinder heads valves and rockers

That is soo excellent that you have a machinist that understands the Ford six and was able to sit down with you and plan this project according to your needs. The Q-Jet arrangement will be interesting and should work well. sdiesel will be happy to hear about using the Q-Jet. It's one of his ongoing...
by guhfluh
Sun Aug 30, 2020 2:15 pm
Forum: 240-300 "Big Block" Six Performance
Topic: looking for best in class towing for a gas 6
Replies: 120
Views: 3892

Re: looking for best in class towing for a gas 6

If you look at the 4.9 intake and exhaust manifolds they are held to the head with washers that straddle both manifold flanges. We talked about making the exhaust flange so it contained both the intake and exhaust port holes where it would be bolted to the head using all the head bolts (Studs) and ...
by guhfluh
Fri Aug 14, 2020 10:58 am
Forum: 240-300 "Big Block" Six Performance
Topic: Good Mileage Carb/Intake Combination with Offy DP or Clifford 4V
Replies: 37
Views: 2219

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

Um, my highway mileage is around 20 and drops to 17-17.5 on the interstate at 75mph, yet my factory gears are none of those listed. ;) Those numbers are for 8.8 and 10.25 ford and most dana axles. 9" are slightly different. What ratio do you have? Your 4sp OD helps a lot in the milage dept. 3....
by guhfluh
Thu Aug 13, 2020 11:12 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Good Mileage Carb/Intake Combination with Offy DP or Clifford 4V
Replies: 37
Views: 2219

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

Um, my highway mileage is around 20 and drops to 17-17.5 on the interstate at 75mph, yet my factory gears are none of those listed. ;)
by guhfluh
Tue Aug 11, 2020 11:07 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Adding a knock sensor bung
Replies: 19
Views: 1318

Re: Adding a knock sensor bung

Xstacy is correct that a head bolt stud will work, but so will any other boss on the block. The closer to center block and bore the better and away from anything else that is a noise maker. The oil port on early blocks that turned into the knock sensor boss on the later blocks could theoretically be...
by guhfluh
Tue Aug 11, 2020 10:07 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 300 Rebuild
Replies: 153
Views: 23901

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. Ok....
by guhfluh
Thu Aug 06, 2020 4:44 pm
Forum: 240-300 "Big Block" Six Performance
Topic: My build and soon to come Dyno
Replies: 29
Views: 2357

Re: My build and soon to come Dyno

Sorry guys but my Dyno has been called off, just not going to have enough miles on the fresh rebuild to feel comfortable enough to have a beat on . I'll Circle back around when I get some good miles on her to schedule another dyno I'd say, as long as the rings are seated and the cam is run in, it's...
by guhfluh
Sat Aug 01, 2020 4:48 pm
Forum: 240-300 "Big Block" Six Performance
Topic: My build and soon to come Dyno
Replies: 29
Views: 2357

Re: My build and soon to come Dyno

Nice build. I see a problem with your hot air intake choice though, more so because it's a van. It's good for fuel economy, but not for peak HP/TQ and fighting detonation. If you can get it air from outside the bay somehow, you'll be better off in that aspect. I'm interested in seeing your results. :)
by guhfluh
Sat Aug 01, 2020 4:43 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Beginner 300 moderate rebuild
Replies: 39
Views: 4001

Re: Beginner 300 moderate rebuild

Next phase while we wait for camshaft and then the machine shop... we are moving onto replacing the exhaust system I have read what I could on this forum and FTE about mufflers and cats... we've ordered the Dynomax super turbo muffler with 2.5 off centered in and 2.5 centered outlet. Its aluminized...
by guhfluh
Thu Jul 23, 2020 1:37 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Adjustable cam gear
Replies: 46
Views: 3536

Re: Adjustable cam gear

If you unshroud the chamber you can pull as much as 6 cc out of the chamber volume. When you convert to studs you will also need pushrod guide plates. You will also need hardened shaft pushrods designed for guild plates. I would still retard the cam to increase the margin on the tune-up. It is a 67...
by guhfluh
Thu Jul 23, 2020 12:26 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Adjustable cam gear
Replies: 46
Views: 3536

Re: Adjustable cam gear

Guhfluh, what will the rest of the build specs be for the short block and head on this combo? :nod: Well, it's off topic but, nothing out of the ordinary for now because I lost income. It looks like it will just be a stock 95 bottom end, a Felpro 1024 gasket and my 240 home ported head. I need to g...
by guhfluh
Thu Jul 23, 2020 10:21 am
Forum: 240-300 "Big Block" Six Performance
Topic: Adjustable cam gear
Replies: 46
Views: 3536

Re: Adjustable cam gear

I understand and agree. I am stuck with my Comp 268H for now, which supposedly has a problem with high DCR and detonation at low-midrange RPM. I also have a turbo that is pretty well matched to that RPM as well - a Holset HE351CW - the combination of the two should compound the issue as well as stre...
by guhfluh
Wed Jul 22, 2020 9:51 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Adjustable cam gear
Replies: 46
Views: 3536

Re: Adjustable cam gear

...I have the adjustable Cloyes set and was actually contemplating retarding it the 8* from where I'm at now advanced, just to see how much it'll affect the power curve... I can tell you right now it will rotate the torque curve around the torque peak, with the peak torque amount and rpm changing v...
by guhfluh
Tue Jul 21, 2020 9:04 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Adjustable cam gear
Replies: 46
Views: 3536

Re: Adjustable cam gear

Cloyes gearsets had an advance keyway and a retard keyway. From conversations I see here it seems everyone wants to advance their timing - nobody has said they want to further retard their timing. Ergo, it would seem to me the most logical way to re-engineer a gearset would be to put in three keywa...
by guhfluh
Mon Jul 13, 2020 9:51 am
Forum: 240-300 "Big Block" Six Performance
Topic: MPG – Torque – Cruise speed and gear ratio hypothetical?
Replies: 25
Views: 3782

Re: MPG – Torque – Cruise speed and gear ratio hypothetical?

For what it's worth, I have similar gearing and drag to your van. I have 3.73 gears in the Dana 60, I believe 245/70R16 tires and the same gear ratios in the T170 as the RUG. I believe pmuller's comment is spot on with needing to change the transmission. Higher gears will reduce highway mileage and ...

Go to advanced search