Search found 50 matches

by Pinhead
Fri Mar 14, 2014 5:36 pm
Forum: 240-300 "Big Block" Six Performance
Topic: when did they start retarding camshafts?
Replies: 23
Views: 2105

Re: when did they start retarding camshafts?

Pinhead!!! Where you been? Moved back out to central KS and got a REAL job. :beer: Unfortunately (or fortunately, depending on your POV) I've stuck with '98 and newer F150s so I haven't had the pleasure of working with any straight-6's. But after replacing two engines (300-six and a 240-six, both o...
by Pinhead
Fri Mar 14, 2014 9:09 am
Forum: 240-300 "Big Block" Six Performance
Topic: when did they start retarding camshafts?
Replies: 23
Views: 2105

Re: when did they start retarding camshafts?

If I recall correctly, one could replace a 460 cam gear with a 427 cam gear for improved performance. Is there an equivalent swap for the 300-six? The Cloyes 8-1014 timing gear set will let you move your timing 4 degrees each way. http://www.summitracing.com/parts/clo-8-1014/overview/make/ford I wa...
by Pinhead
Thu Mar 13, 2014 3:13 pm
Forum: 240-300 "Big Block" Six Performance
Topic: when did they start retarding camshafts?
Replies: 23
Views: 2105

Re: when did they start retarding camshafts?

If I recall correctly, one could replace a 460 cam gear with a 427 cam gear for improved performance.

Is there an equivalent swap for the 300-six?
by Pinhead
Thu Mar 13, 2014 12:26 pm
Forum: 240-300 "Big Block" Six Performance
Topic: when did they start retarding camshafts?
Replies: 23
Views: 2105

Re: when did they start retarding camshafts?

Getting this topic back to the top...

Say they started retarding the cams in the mid '70s, when did they stop? I am putting in an '81 300 in a pickup and it would be really easy to advance the cam a tooth before I put everything on the front of the engine if it would make any difference...
by Pinhead
Wed Aug 06, 2008 9:46 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Open Headers
Replies: 16
Views: 2029

Generally, dropping the backpressure leans out the motor, which can reduce torque output, (also possibly make it ping, even if you don't hear it) therefore reducing fuel mileage. Sometimes it's necessary to adjust the fuel curve to compensate for the reduction of backpressure, but a motor is *never...
by Pinhead
Tue Apr 15, 2008 1:18 am
Forum: The Falcon's Nest
Topic: Originally advertised gas mileage
Replies: 61
Views: 7062

wallaka wrote:Anyways, how are your projects going?


I drive a '99 F150, 5.4L, 4R70W 4-speed auto, 4x4, 3.55 rear....

And it now averages 25mpg by using tech that "can't possibly work." :wink:
by Pinhead
Fri Apr 11, 2008 3:08 pm
Forum: 144-250 "Small Block" Six Performance
Topic: cherrybomb Glasspacks
Replies: 20
Views: 1762

by Pinhead
Mon Mar 24, 2008 10:13 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Big Six aluminum head update 9-14
Replies: 188
Views: 73941

Me too... Subscribing.
by Pinhead
Mon Mar 10, 2008 8:10 pm
Forum: The Falcon's Nest
Topic: Originally advertised gas mileage
Replies: 61
Views: 7062

He "labels" my posts pure disinformation and then when I add some actual information backing my info, he says "believe what you want." It seems the "snide attitude" is coming from someone else in this thread. It also seems that the thread had taken a turn towards the subject of gas mileage, and "why...
by Pinhead
Mon Mar 10, 2008 4:33 pm
Forum: The Falcon's Nest
Topic: Originally advertised gas mileage
Replies: 61
Views: 7062

I AM an engineer, and for some reason I still think that fuel injection gives higher mpg... weird! I also think that modern efficiencies are approaching the point of diminishing returns for internal combustion engines. 100 mpg? yeah right... Oh yeah, I am in on the conspiracy. SHH! :roll: :roll: :r...
by Pinhead
Sun Mar 09, 2008 4:42 pm
Forum: The Falcon's Nest
Topic: Originally advertised gas mileage
Replies: 61
Views: 7062

Catalytic converters have one purpose and one purpose only: Eliminate NOx emissions. Careful, your ignorance is showing. A catalytic converters primary function is to catalyze the combustion of unburned hydrocarbons in the exhaust. NOx emissions are primarily caused by high combustion temperatures,...
by Pinhead
Sat Mar 08, 2008 4:10 pm
Forum: The Falcon's Nest
Topic: Originally advertised gas mileage
Replies: 61
Views: 7062

The emissions control systems, namely the catalytic converter, is why current US vehicles don't get as good of mileage as they could. "We tune for the catalytic converter." This coming directly from the mouth of a GM emissions engineer. In other words, they're required to dump fuel out of the exhau...
by Pinhead
Sat Mar 08, 2008 1:18 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 500CFM not ENOUGH!!!!
Replies: 30
Views: 3541

by Pinhead
Sat Mar 08, 2008 9:35 am
Forum: The Falcon's Nest
Topic: Originally advertised gas mileage
Replies: 61
Views: 7062

All else being equal, weight does make a difference. However, the point that I was making was that weight isn't the whole story. The 428 Bonneville was extremely underrated at 360 horsepower, and was in a BARGE of a car that was made with... ACTUAL METAL. The emissions control systems, namely the ca...
by Pinhead
Fri Mar 07, 2008 11:00 pm
Forum: The Falcon's Nest
Topic: Originally advertised gas mileage
Replies: 61
Views: 7062

The weight of the cars has nothing to do with it. The modern engine control systems aren't that much more efficient... Only more consistent. My '86 Cougar V6 got 15-16mpg max. My friend's '86 Mercury Mark IV got 32mpg all the time. Can you guess which had more power and weighed more? The Merc. witc...
by Pinhead
Fri Mar 07, 2008 9:50 pm
Forum: The Falcon's Nest
Topic: Originally advertised gas mileage
Replies: 61
Views: 7062

The weight of the cars has nothing to do with it. The modern engine control systems aren't that much more efficient... Only more consistent.

My '86 Cougar V6 got 15-16mpg max. My friend's '86 Mercury Mark IV got 32mpg all the time. Can you guess which had more power and weighed more? The Merc.
by Pinhead
Wed Mar 05, 2008 10:42 pm
Forum: 144-250 "Small Block" Six Performance
Topic: Horse Power
Replies: 14
Views: 1199

The PowerLynz don't make much sense for high-flow, high-power applications but there is some evidence that they can help THERMAL efficiency if one is seeking maximum economy. The theory of getting the puddled fuel back into useful condition (vaporized) seems valid to me. I haven't discarded the Sin...
by Pinhead
Wed Mar 05, 2008 2:49 pm
Forum: 144-250 "Small Block" Six Performance
Topic: Horse Power
Replies: 14
Views: 1199

If you can't achieve a high compression ratio with new pistons, the cylinder head is all that's left. High compression without detonation is the key to efficient horsepower. Plane the cylinder head, "edge" the chamber, cut Singh Grooves, and if you have the ability, add "PowreLynz" (basically screw ...
by Pinhead
Thu Jan 10, 2008 12:32 pm
Forum: 144-250 "Small Block" Six Performance
Topic: mileage vs engine size
Replies: 15
Views: 1263

And my mom's old Falcon with a 200 straight-six got around 30mpg all the time... But our '80s Fairmonts only got around 23mpg.
by Pinhead
Tue Jan 08, 2008 11:17 pm
Forum: Electrical, Audio, and Electronics
Topic: WOW I didn't think the CB whip was that tall
Replies: 2
Views: 662

Are you using an external SWR meter to tune the antenna? If you're having to take 8" off the 102" whip you have a serious problem. 99% of CB install problems are due to a bad or insufficient ground. Once you get sufficient ground and have a good antenna, your range will downright amaze you.
by Pinhead
Tue Dec 18, 2007 2:04 am
Forum: 144-250 "Small Block" Six Performance
Topic: good product or outdated ideas
Replies: 5
Views: 691

They are basically high bleed-out rate lifters. They make for less lift/duration/overlap at low RPM's. I've never personally installed them, but we had an old Ford pickup with them in them and it seemed pretty torquey (how would you spell that??). I didn't know how it ran beforehand, though.
by Pinhead
Thu Dec 06, 2007 8:35 am
Forum: 240-300 "Big Block" Six Performance
Topic: consumption
Replies: 20
Views: 1886

And it only takes roughly 30 horsepower to cruise along at 55mph... So that's 2544*30=76320 btu/h.. 114000/76320=1.49 gallons per hour at 55mph which is roughly 37 mpg. How many vehicles that you know of get that kind of mileage? I that is assuming no waste heat. Not really possible I think. My old...
by Pinhead
Thu Dec 06, 2007 12:11 am
Forum: 240-300 "Big Block" Six Performance
Topic: consumption
Replies: 20
Views: 1886

It's easy, really; the more horsepower you make, the more gas you consume: There are 2,544 BTU per horsepower. There are 114,004 BTU per gallon of gasoline. You do the math... :wink: And it only takes roughly 30 horsepower to cruise along at 55mph... So that's 2544*30=76320 btu/h.. 114000/76320=1.4...
by Pinhead
Tue Nov 27, 2007 5:16 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Sustained RPMs on a Big 6 300 For airplane
Replies: 75
Views: 11959

Another cylinder head porting how-to: http://www.popularhotrodding.com/tech/0 ... index.html

And don't forget DIYPorting.com.
by Pinhead
Tue Nov 20, 2007 5:29 pm
Forum: engine tech
Topic: The new OLD FTF gets a "Duesenberg DOHC 4-valve"
Replies: 230
Views: 83978

Headers are tough enough to seal as it is, without all of that extra weight and leverage pulling them down. What are you going to do to help support that exhaust?
by Pinhead
Fri Nov 02, 2007 12:51 pm
Forum: 144-250 "Small Block" Six Performance
Topic: Heat Soak or Not?
Replies: 16
Views: 1292

My experience probably has no bearing here (since I'm driving a '98 Ranger with a 4-cylinder) but I know my engine runs much better when it's cold. However, it doesn't get as good of mileage. I'm running a Scan Gauge II and am constantly monitoring my mileage. When I first start out the engine has a...
by Pinhead
Wed Oct 24, 2007 10:19 am
Forum: 144-250 "Small Block" Six Performance
Topic: Best spark plugs to use?
Replies: 19
Views: 1589

Has anyone ever used Halo plugs?

http://www.lsgbrisk.com/products/details.aspx
by Pinhead
Sun Oct 21, 2007 2:20 pm
Forum: 144-250 "Small Block" Six Performance
Topic: Best spark plugs to use?
Replies: 19
Views: 1589

What about the Bosch Platinum+2's?

http://www.boschautoparts.com/Products/ ... tinum2.htm
Image
by Pinhead
Thu Oct 18, 2007 3:11 pm
Forum: Aussie Ford Sixes
Topic: What are these intake doohickies for?
Replies: 23
Views: 2361

It's there to keep the manifold temperature steady and is especially helpful when it's cold out. Liquid fuel doesn't burn, and the manifold heat helps to vaporize the fuel that bounces off the bottom of the manifold. Generally the better the carb atomizes the fuel, the less manifold heat you need. h...
by Pinhead
Wed Sep 26, 2007 10:47 pm
Forum: 144-250 "Small Block" Six Performance
Topic: EFI Seminar?
Replies: 31
Views: 2315

I think it would definitely be worth attending.
by Pinhead
Fri Aug 03, 2007 1:42 am
Forum: 240-300 "Big Block" Six Performance
Topic: 300 Head Ports
Replies: 38
Views: 5997

i took very detailed (at least to me LOL) pics of my 300 head i was gunna work on until i found a nasty crack. pics are here: http://fordtruckworld.tenmagazines.com/ew/mygallery.asp?id=5960&album=56234 i have more, but they were before i cleaned up the head and bead blasted it. Is that a sock h...
by Pinhead
Thu Aug 02, 2007 1:53 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 300 Head Ports
Replies: 38
Views: 5997

I wouldn't try to make the ports any bigger. ...it is better to have a port slightly too small than one slightly too big, as overall performance drops off faster on the big side than on the small side. And about the valve guide boss: Unless you know to the contrary, it is tempting to completely cut ...
by Pinhead
Thu Aug 02, 2007 1:31 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 300 Head Ports
Replies: 38
Views: 5997

Ok, you can almost disregard my pictures. The general idea is there, but the execution is all wrong. Read THIS article.
by Pinhead
Tue Jul 31, 2007 1:14 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 300 Head Ports
Replies: 38
Views: 5997

by Pinhead
Tue Jul 31, 2007 12:55 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 300 Head Ports
Replies: 38
Views: 5997

by Pinhead
Sun Jul 29, 2007 8:51 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 300 Head Ports
Replies: 38
Views: 5997

Where is the thermactor boss in the pics??
by Pinhead
Sun Jul 29, 2007 8:03 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 300 Head Ports
Replies: 38
Views: 5997

I've never done any major porting work, but how big of a valve guide do you need? Why not port it like this:

Image Image
by Pinhead
Sun Jul 15, 2007 2:55 pm
Forum: 144-250 "Small Block" Six Performance
Topic: Voltage Regulator Problems
Replies: 7
Views: 702

I'd install a voltmeter and monitor the battery voltage under various loads. Check it at idle with no accessories running. You should have between 13.3 and 14.4v at the battery. Turn the brights on and the voltage should drop slightly, but not by much. Keep turning things on until you see a good vol...
by Pinhead
Sun May 06, 2007 2:20 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Simple Power Upgrades
Replies: 66
Views: 18881

Also, that is far from the optimal setup to add the grooves to. Notice he has dished pistons; this greatly reduces the squish:bore ratio and therefore diminishes the return. As I said before, the groove in itself isn't nearly as much a power maker as it is a power enabler. It allows you to run highe...
by Pinhead
Fri May 04, 2007 11:14 am
Forum: 240-300 "Big Block" Six Performance
Topic: Simple Power Upgrades
Replies: 66
Views: 18881

Image
by Pinhead
Fri May 04, 2007 11:07 am
Forum: 240-300 "Big Block" Six Performance
Topic: Simple Power Upgrades
Replies: 66
Views: 18881

... I've grooved every single B&S engine I've got my hands on. My old long-stroke Tecumseh responded extremely well to grooving and planing the "head" for compression (side-valve engine)... Long, long ago in the dark days before World War Two a gentleman by the name of Sir Harry Ricardo did sig...
by Pinhead
Fri May 04, 2007 1:36 am
Forum: 240-300 "Big Block" Six Performance
Topic: Simple Power Upgrades
Replies: 66
Views: 18881

... Dyno results comparing a grooved engine to a non-grooved engine would show very little difference... Ok, so if it would "show very little difference" then what's the point? Probably the best measure of combustion efficiency is BSFC (Brake Specific Fuel Consumption). Perhaps we will gain gobs of...
by Pinhead
Thu May 03, 2007 9:09 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Simple Power Upgrades
Replies: 66
Views: 18881

Uh huh. Yup. Ya betcha Rolling Eyes And precisely how many of these have YOU modified and run? Dyno results with pictures would be of great help. Verifiable, of course Wink Joe Dyno results comparing a grooved engine to a non-grooved engine would show very little difference. They're not so much a p...
by Pinhead
Thu May 03, 2007 3:28 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Simple Power Upgrades
Replies: 66
Views: 18881

regarding the valves, I want to hear how the lubrication issue is resolved. A moving part in the combustion chamber, without lubrication, is a sticking object waiting to happed. Bit of carbon buildup would seem to me all it would take. Once one of them sticks open or closed, you got an imbalanced e...
by Pinhead
Thu May 03, 2007 2:08 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Simple Power Upgrades
Replies: 66
Views: 18881

I'm currently attending college to be an electronics engineer, work as a mechanic at a bowling ally, and work on cylinder heads and tune engines for friends/acquaintances for extra cash.

Edit: Should've been a mechanical engineer, though...
by Pinhead
Thu May 03, 2007 2:01 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Simple Power Upgrades
Replies: 66
Views: 18881

Maybe, and I emphasize maybe, on a non-PCM driven ignition. The late model EFI 300s have high swirl, fast burn cylinder heads and ignition curves programmed in to match. Any mod which alters either the onset of ignition or the rate of burn is going to either reduce power output, increase emissions ...
by Pinhead
Thu May 03, 2007 1:56 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Simple Power Upgrades
Replies: 66
Views: 18881

i'm a bottom end guy so you guy raised a whole bunch of interesting questions for me, but i have just one.. how would you keed that incredibly thick heavy valve from slamming into the top of the piston with out sawing a 1/4 inch off the top and giving yourself something like 2:1 compression? not me...
by Pinhead
Thu May 03, 2007 1:36 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Simple Power Upgrades
Replies: 66
Views: 18881

Do you guys actually think that the valves would be made/produced/manufactured if they had absolutely no chance of working ? They wouldn't make any money on a big venture like that if they had no way of selling them... The valves are generally 20% heavier than their stock counterparts. They can make...
by Pinhead
Wed May 02, 2007 10:46 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Simple Power Upgrades
Replies: 66
Views: 18881

Nice ad, not. :roll: Even if this crock were true, which point I do not grantyou, there's not much there for an engine which is maximized for 2000 RPM and limits out at less than 4000. That isn't an ad... Which part do you refuse to believe? The only part of the post that would cost anything are th...
by Pinhead
Wed May 02, 2007 9:26 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Simple Power Upgrades
Replies: 66
Views: 18881