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Search found 332 matches

by American Thunder
Thu Mar 26, 2009 10:58 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 300 is not a performer
Replies: 66
Views: 8319

tj300 wrote:
2.)Manual or auto tranny. What's your gearing in the rear differential?


I swapped in the mazda 5-speed from an F150, I run the stock 3.55 gears and 31" tires on 16" jeep wheels. (And my Bronc is loaded with parts, tools, and random junk I've managed to collect back there)
by American Thunder
Thu Mar 26, 2009 8:58 pm
Forum: 240-300 "Big Block" Six Performance
Topic: How many miles does your 300 have?
Replies: 37
Views: 7227

cougeuph wrote:
Pistons replaced with steel.


I dont think they've used steel pistons in about 80 years??
by American Thunder
Thu Mar 26, 2009 8:54 pm
Forum: 240-300 "Big Block" Six Performance
Topic: weighed my 300 engine today..
Replies: 15
Views: 9244

Back when I was younger,(and my back was still in one piece) I walked into the machinist shop carrying a bare 302 block in each hand by the main cap. raaah!
by American Thunder
Thu Mar 26, 2009 8:47 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 300 is not a performer
Replies: 66
Views: 8319

tj, ignition timing and air/fuel ratio can make your motor scream like heck or run like a complete pig. (or a chevy) Generally, the state of tune is more important than adding speed parts. So many people spend all kinds of time bolting on stuff, and then skip the most important part.. TUNING! My bon...
by American Thunder
Wed Mar 25, 2009 10:11 pm
Forum: 240-300 "Big Block" Six Performance
Topic: running cold
Replies: 11
Views: 1333

I like to use that permatex contact adhesive spray, to glue the thermostat in place with the gasket onto the housing. This way, it can't slip around and cause trouble.
by American Thunder
Wed Mar 25, 2009 9:57 pm
Forum: 240-300 "Big Block" Six Performance
Topic: rpm
Replies: 49
Views: 7292

The valve stems are only about 1.91" center to center (tape measure, no caliper handy) On a canted valve Boss head? Also, on my crossflow head I moved the valve guides. Ah, that's exactly the model I used in the program. Aluminum motorsport BOSS 302 heads, (with improved exhaust ports, which are fa...
by American Thunder
Wed Mar 25, 2009 8:29 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 300 is not a performer
Replies: 66
Views: 8319

I once had a 72 GMC with a 307 and a 3 on the tree regular cab 8' bed and power nothing. It weighed in at 3650 IIRC. 4700 is practically F250 territory in a 1980. The 1972 F250 I had with a 360 FE, cast iron trans and case, and 40" mudders weighed 4500-4600, but it didnt have a bed on it. What's an...
by American Thunder
Wed Mar 25, 2009 8:23 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 300 is not a performer
Replies: 66
Views: 8319

StrangeRanger wrote:Nope. That's the price in British Pounds Sterling.

9" ratios are typically 3.00, 3.25, 3.50 etc. not 3.14. I think you're reading some other line besides ratio off the tag


I have an original set of 1960 Thunderbird 9" 3.10 gears in my Mustang. I wonder if they're still available? hmm
by American Thunder
Wed Mar 25, 2009 8:10 pm
Forum: 240-300 "Big Block" Six Performance
Topic: rpm
Replies: 49
Views: 7292

Image

Oh yeah, and the 300 from heck. Like to rev it??
by American Thunder
Wed Mar 25, 2009 6:36 pm
Forum: 240-300 "Big Block" Six Performance
Topic: rpm
Replies: 49
Views: 7292

That was my catchphrase back when I did a lot of performance engine work.
"Horsepower - it's all in your head." :)


P.S. As much as I love the 302s, a 300hp 300 would beat down a 300hp 302. I wouldnt be surprised if it beat a 300hp 351W, too.
by American Thunder
Wed Mar 25, 2009 6:34 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 300 is not a performer
Replies: 66
Views: 8319

If I recall, my 4x4 Bronco weighs about 4200 lbs, so a 2wd shortbed F150 should be a little lighter, I'd think. Maybe 3900-4000?
by American Thunder
Wed Mar 25, 2009 6:19 am
Forum: 240-300 "Big Block" Six Performance
Topic: 300 is not a performer
Replies: 66
Views: 8319

Re: 300 is not a performer

Any one expecting a big horse power gain with a few performance bolt ons is in for a big disappointment, especially with an automatic transmission behind it. On my 300 I have the Offy DP intake, 500cfm 4bbl. carb, dual outlet header, true duals, and an MSD ignition upgrade. Originally, my engines o...
by American Thunder
Tue Mar 24, 2009 10:18 pm
Forum: 240-300 "Big Block" Six Performance
Topic: rpm
Replies: 49
Views: 7292

On Dyno2000 software: http://i4.photobucket.com/albums/y149/americanthunder68/300stock.jpg Stock 300 http://i4.photobucket.com/albums/y149/americanthunder68/300portedheadcccam4bbl.jpg 300 I'm going to build http://i4.photobucket.com/albums/y149/americanthunder68/300portedheadhotcccam4bbl.jpg Pretty ...
by American Thunder
Tue Mar 24, 2009 4:03 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Pics of 300 build
Replies: 31
Views: 4379

I painted my timing cover with clear coat after I bead blasted it, so I used a black sharpie to do the marks. :)
by American Thunder
Tue Mar 24, 2009 10:16 am
Forum: 240-300 "Big Block" Six Performance
Topic: Pics of 300 build
Replies: 31
Views: 4379

Looks good, now all it needs is some dark camo stripes. :D
by American Thunder
Mon Mar 23, 2009 9:47 pm
Forum: 240-300 "Big Block" Six Performance
Topic: running cold
Replies: 11
Views: 1333

If the t-stat was in backward, I think it would get very hot, since the heat from the motor side wouldnt reach it.
Perhaps the stat is defective and opens too soon?
by American Thunder
Mon Mar 23, 2009 9:44 pm
Forum: 240-300 "Big Block" Six Performance
Topic: weighed my 300 engine today..
Replies: 15
Views: 9244

mutt wrote:now thats interesting....I knew those Brit 4's were massive lumps, but that they are only a tad lighter than a big six is astounding.
What does (for instance) a 289 similarly attired wiegh??


As far as I know, a 289/302 complete, weighs about 550 lbs.
by American Thunder
Mon Mar 23, 2009 9:42 pm
Forum: 240-300 "Big Block" Six Performance
Topic: efi 300
Replies: 14
Views: 2056

The GM 2.5 is a short stroke engine designed to be pollution friendly and super cheap to produce. Ok, but I've replaced too many cracked heads on them for various people to be much impressed. There is a stroked marine version (3.0L???) that I would consider as possibility in a small pickup. Some gu...
by American Thunder
Mon Mar 23, 2009 9:39 pm
Forum: 240-300 "Big Block" Six Performance
Topic: cross flow 300 head for sale
Replies: 10
Views: 3394

It's a shame it's not aluminum. I'd feel a lot more comfortable owning a 1300 dollar ultra rare piece that was easily repairable if it ate a valve or something and got some damage.
by American Thunder
Mon Mar 23, 2009 9:35 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Little Ranger with a big six....
Replies: 72
Views: 22484

How's the acceleration?
by American Thunder
Mon Mar 23, 2009 8:21 am
Forum: 240-300 "Big Block" Six Performance
Topic: Broken Motor Mounts?
Replies: 29
Views: 3821

If you use rubber on the motor mounts and poly on the trans mount, or vice versa, you might break the bellhousing.
by American Thunder
Sun Mar 22, 2009 11:23 pm
Forum: 240-300 "Big Block" Six Performance
Topic: weighed my 300 engine today..
Replies: 15
Views: 9244

A whole mustang t5 donor car would be nice, to get all the pieces.
Are you swapping the stock rear for an 8.8?
by American Thunder
Sun Mar 22, 2009 9:52 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Pics of 300 build
Replies: 31
Views: 4379

You can't go wrong with haze grey. :D
by American Thunder
Sun Mar 22, 2009 8:48 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Pics of 300 build
Replies: 31
Views: 4379

Check also the Graf Spee......the false bow wave was a common pre radar idea. War 1 saw astounding "Admiralty Disruptive" paint jobs that must have been an incredible amount of work. Sigh. about all the nifty paint I can see is my highlighting the timing marks on the cam gear case.......im a frustr...
by American Thunder
Sun Mar 22, 2009 12:08 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Pics of 300 build
Replies: 31
Views: 4379

Seems the Germans painted up that Bismark of their's SEVERAL TIMES in Her short existence. First Grey,then Black,then the 'Zig-Zag' scheme at one point. Go with the Grey/Gray :wink: . ~OO6. Our Iowa class went through a few different camo paint schemes, too. (one of those camo designs is going on m...
by American Thunder
Sun Mar 22, 2009 12:04 pm
Forum: Fuel Injection - Mega Squirt
Topic: My mega squirt install
Replies: 20
Views: 9409

That's awesome.
Post fuel mileage results when you figure them out?
by American Thunder
Sat Mar 21, 2009 10:15 am
Forum: 240-300 "Big Block" Six Performance
Topic: 83 F150 EFI PUMP
Replies: 7
Views: 916

The Vagrant had a 2300 cc (140 ci) inline Four-banger. Joe My buddy had a pretty quick 355" pro-street Vega, if I recall he went 9.30s on the bottle, and 11.50s on the motor. But he ran cheap gas in it when he drove it on the street, as the compression was only about 8:1. I actually like the cars, ...
by American Thunder
Sat Mar 21, 2009 10:08 am
Forum: 240-300 "Big Block" Six Performance
Topic: Fuel Pump?
Replies: 3
Views: 358

Re: Fuel Pump?

Lazy JW wrote:I like to set the choke about as lean as I can and still get decent cold starting, and definitely make certain that any and all choke heating devices are installed and functioning properly.
Joe


I set mine on the lean side, too. Just enough to get it running.
by American Thunder
Sat Mar 21, 2009 10:05 am
Forum: 240-300 "Big Block" Six Performance
Topic: 83 F150 EFI PUMP
Replies: 7
Views: 916

Lazy JW wrote:IIRC the Vega oil pressure switch only required about 5 PSI to activate.
Joe



HAHA!! I edited my post, and asked this question before I read your response.. I guess my estimate was pretty close.. that's funny
by American Thunder
Sat Mar 21, 2009 9:47 am
Forum: 240-300 "Big Block" Six Performance
Topic: 83 F150 EFI PUMP
Replies: 7
Views: 916

Does the '94 have a fuel roll-over-shut-off switch? I can't remember. If the '94 parts truck had it, then perhaps the switch circuit is open and the computer sees it as the switch being tripped, therefore, it's not sending power to the fuel pump circuit? I like the idea of an oil psi switch, because...
by American Thunder
Sat Mar 21, 2009 9:38 am
Forum: 240-300 "Big Block" Six Performance
Topic: Fuel Pump?
Replies: 3
Views: 358

No. Possibly the float level in the carb. Inertia caused by making a turn doesnt affect the fuel pump, but it does affect the fuel sloshing around in the carb's float bowl. If it's too low, then the sloshing fuel will expose the main jets, causing a lean condition, if it's too high, then the sloshin...
by American Thunder
Fri Mar 20, 2009 9:53 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Anybody have pics of.....
Replies: 19
Views: 3933

Re: stock intake/carter/efi exhaust

I'm planning the same combo for my van but have some questions. How do you supply heat to the carb like the heat valve in the stock exhaust manifold does? What's the recommended muffler setup for two exhaust pipes? Thanks :) I don't have any intake heater on it, and it's a pain in the cold weather,...
by American Thunder
Fri Mar 20, 2009 9:28 pm
Forum: 240-300 "Big Block" Six Performance
Topic: My 1978 Bronco project: A ton of pics
Replies: 31
Views: 6223

The pitman measures as a 3" drop. If I was going to convert a newer truck to a SAS setup, I would definitely use leaf springs. (shackles to the rear, not to the front!) With leaf, you don't need to worry about any trac bars or bump steer, and lifting it is simpler. At some point, if I decide to upgr...
by American Thunder
Fri Mar 20, 2009 7:25 pm
Forum: 240-300 "Big Block" Six Performance
Topic: My 1978 Bronco project: A ton of pics
Replies: 31
Views: 6223

By the way, M / 400 heads modified to fit on a Windsor block or a Boss 302 block make killer street engines - even better than Boss heads. Even better yet, the Aussie 351C 2-bbl head, which is similar in port size and valves as the 351M/400 head, but with smaller combustion chambers, so they yield ...
by American Thunder
Fri Mar 20, 2009 6:25 am
Forum: 240-300 "Big Block" Six Performance
Topic: 240 or 300 connecting rods?
Replies: 20
Views: 4187

IMO Ford could have overcome any problems with our BB6 engines in the course of developing them as lightweight diesels, but they chose to outsource their diesel powerplants. Beancounters? Trade-offs? Image? Bottom line is that most North Americans are pre-sold that V8 (& V10?) motors are the wa...
by American Thunder
Thu Mar 19, 2009 6:31 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Anybody have pics of.....
Replies: 19
Views: 3933

If I recall, it came off a '84 or '85 F150.
by American Thunder
Thu Mar 19, 2009 4:49 pm
Forum: 240-300 "Big Block" Six Performance
Topic: need some tuning help please
Replies: 8
Views: 1059

I still see so many shot power valves. In fact, the one in my BG on my Mustang just went south.
by American Thunder
Thu Mar 19, 2009 4:42 pm
Forum: 240-300 "Big Block" Six Performance
Topic: My 1978 Bronco project: A ton of pics
Replies: 31
Views: 6223

After reading through this thread, I feel like bolting a 400 crank in a 351W, with narrowed 300 rods, and boss 302 pistons, then bolting on 351C 4bbl heads and a boss 302 intake with spacers!! Then just sit there at a show with the hood up, and watch people lose their minds trying to figure out what...
by American Thunder
Thu Mar 19, 2009 4:38 pm
Forum: 240-300 "Big Block" Six Performance
Topic: My 1978 Bronco project: A ton of pics
Replies: 31
Views: 6223

The original driveline combo in that thing was, most likely, an NP435 trans with a married NP205 t-case behind it. You can find NP435s easy and for relatively little $$$ if you're going to stick a manual back in it. The only downside to the NP435, if you're planning on driving this thing with regul...
by American Thunder
Wed Mar 18, 2009 10:33 pm
Forum: 240-300 "Big Block" Six Performance
Topic: My 1978 Bronco project: A ton of pics
Replies: 31
Views: 6223

NO PLEASE DONT GET ME STARTED!!! THERE IS NO "M" AFTER 400. its just 400. there is a M after 351M because it is a modified 400 block. also so you dont mix up 351W, 351C. I always thought they called it a modified because it combined the induction system and crankshaft bearing dimensions of a small ...
by American Thunder
Wed Mar 18, 2009 10:24 pm
Forum: 240-300 "Big Block" Six Performance
Topic: need some tuning help please
Replies: 8
Views: 1059

Popped power valve in the carb maybe? That'll make it run rich.

Where's your initial timing set at? 10?

How many turns out are the idle screws? I think 1 to 1.5 turns out should be a good starting point.
by American Thunder
Wed Mar 18, 2009 9:56 pm
Forum: 240-300 "Big Block" Six Performance
Topic: My 1978 Bronco project: A ton of pics
Replies: 31
Views: 6223

I also installed the new brake hoses on the front, which came with the lines as one unit. Pretty cool new rust resistant coating they come with, too. Time will tell how rust resistant they really are. ha You can see the white Ford F(650?) in the background of the one pic, that belongs to my brother....
by American Thunder
Wed Mar 18, 2009 9:45 pm
Forum: 240-300 "Big Block" Six Performance
Topic: My 1978 Bronco project: A ton of pics
Replies: 31
Views: 6223

The original motor was a 351M, and it had the usual iron 4 speed and iron transfer case. I'm getting the trans case from the guy, but the original motor and trans were sold. http://i4.photobucket.com/albums/y149/americanthunder68/Bb780029.jpg I made an extension for the factory trac bar bracket, whi...
by American Thunder
Wed Mar 18, 2009 7:48 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Anybody have pics of.....
Replies: 19
Views: 3933

Oh, and I don't have a pic, but I used the '95 EFI throttle cable, too, because the original '83 cable snapped a few weeks ago. The '95 cable is a bit longer, which is good, because it makes a bigger loop, which means less strain on the cable. I cut the top off the old throttle bracket, and welded o...
by American Thunder
Wed Mar 18, 2009 7:43 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Anybody have pics of.....
Replies: 19
Views: 3933

sure do! :) anymore?... http://i4.photobucket.com/albums/y149/americanthunder68/300runninginstalled.jpg I have since bead blasted, primed and painted that ugly ass air cleaner satin black. I got the cleaner assembly for free, and other than the paint, it was in flawless condition, so I cant complai...
by American Thunder
Tue Mar 17, 2009 9:43 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Broken Motor Mounts?
Replies: 29
Views: 3821

haha
by American Thunder
Tue Mar 17, 2009 7:15 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Anybody have pics of.....
Replies: 19
Views: 3933

Image

Does my motor qualify?
by American Thunder
Tue Mar 17, 2009 6:57 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Questions on a burned engine
Replies: 14
Views: 1855

If the paint is burned on the block, I wouldnt trust it.
by American Thunder
Sun Mar 15, 2009 10:25 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Pics of 300 build
Replies: 31
Views: 4379

I always go with dark corporate Ford blue on the block, then bead blast and clear coat the aluminum pieces.
by American Thunder
Sun Mar 15, 2009 8:37 am
Forum: 240-300 "Big Block" Six Performance
Topic: rpm
Replies: 49
Views: 7292

Stock hydraulic lifters pump up and float the valves over 6500, generally, even with heavy valve springs installed. Which reminds me. I found an old operator's manual for a 300 industrial motor. It lists valve lash adjustments, and I'm wondering, do some of the 300 industrial engines have solid lift...

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