Search found 603 matches

by F-250 Restorer
Tue Aug 07, 2018 9:11 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Which manifold studs?
Replies: 6
Views: 248

Re: Which manifold studs?

I used to sell the stud kits. You can find all you need at Hillcofasteners dot com. Get grade 8, 3/8" stude with the coarse threads into the head, and fine threads for the intake/exhaust. Use anti seize on the stud threads in the head. Use a crimp nut for the exh/intake with the oem thick washe...
by F-250 Restorer
Wed Jul 25, 2018 7:58 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Frying dizzy contact photo
Replies: 7
Views: 318

Re: Frying dizzy contact photo

I was surprised to see that the rotor is almost centered on the contact @ 20* advanced.

Image

I also found a great write up on rotor phasing: http://www.junkyardgenius.com/ignition/ ... ing01.html

Thanks, Pmuller9
by F-250 Restorer
Tue Jul 24, 2018 6:01 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Electric Fan Options
Replies: 5
Views: 290

Re: Electric Fan Options

I'll have to send out a thank you to hart3. I guess all the research that I did for the book I wrote about efans taught me a thing or two. I won't go too much into detail because it seems that you've Artie made up your mind to use an aftermarket fan. I myself, like so many others on the forms that y...
by F-250 Restorer
Mon Jul 23, 2018 6:55 pm
Forum: 240-300 "Big Block" Six Performance
Topic: A sad note regarding Acc. motion cams
Replies: 1
Views: 185

A sad note regarding Acc. motion cams

I just wanted to post an update regarding the Canadian company accelerated motion. They made cams for the Ford three hundred and two forty, and I found some of their profiles very attractive and considered purchasing one couple years back. Recently I tried to visit their website and noticed that it ...
by F-250 Restorer
Mon Jul 23, 2018 11:44 am
Forum: 240-300 "Big Block" Six Performance
Topic: Frying dizzy contact photo
Replies: 7
Views: 318

Re: Frying dizzy contact photo

Hello Pmuller: Thanks for the reply. It took a while b/c I had to read a bit about rotor phasing. I will try to get to the garage and set it up with a marker and mark the r. position relative to the contack @ 20* btdc. I'll try to post findings this evening. BTW, the Blondie cam engine will soon be ...
by F-250 Restorer
Sun Jul 22, 2018 4:49 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Frying dizzy contact photo
Replies: 7
Views: 318

Frying dizzy contact photo

So this has been going on for ages. I run a ds2 dizzy with msd 6a digital box, and a summit coil. I have to change the cap and rotor twice a year. This photo is a high dollar brass contact cap. Luckily, I simply cash in the warranty and exhange for a new one. This is now beginning to annoy me. I enj...
by F-250 Restorer
Sun Jul 15, 2018 11:37 am
Forum: 240-300 "Big Block" Six Performance
Topic: Just making sure my cam is in fact defective
Replies: 1
Views: 165

Re: Just making sure my cam is in fact defective

A photo is worth a thousand words.
by F-250 Restorer
Sun Jul 08, 2018 3:17 am
Forum: 240-300 "Big Block" Six Performance
Topic: Isky lifters and Crower cam--compatible?
Replies: 1
Views: 163

Isky lifters and Crower cam--compatible?

I've heard bad things about the Crower lifters. Does anyone know any issues that might occur, other than warranty probs, that could happen with this coupling of brands?
by F-250 Restorer
Sat Jun 30, 2018 3:23 am
Forum: 240-300 "Big Block" Six Performance
Topic: My big block build
Replies: 11
Views: 531

Re: My big block build

The best thing you can do is to educate yourself about the 300 by reading forum threads about each aspect of a build. Then you know the answers without relying on someone else's preference or misinformation. Knowledge is power. Knowledge builds power. Foolishness throws a bunch of parts together wit...
by F-250 Restorer
Fri Jun 29, 2018 11:52 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 3X2 EFI EXH. Manifolds
Replies: 14
Views: 508

Re: 3X2 EFI EXH. Manifolds

Ever heard of cerakote? They have a 2000° DIY coating. It has to be heat cured though. Here's a link to the black color https://www.cerakoteguncoatings.com/finishes/C-102Q/graphite-black/ [/quote] Ha, thanks for the link. I had forgotten about them. I think I'll try them for the headers. The shortie...
by F-250 Restorer
Thu Jun 28, 2018 7:08 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 3X2 EFI EXH. Manifolds
Replies: 14
Views: 508

Re: 3X2 EFI EXH. Manifolds

That is a big bite for header coating! I guess I'll wait for the DIY ceramic coating to come out. I remember when you could buy 'pearl' by the bag (which was ground up abalone shell) to add to your automotive paint for that iridescent look. Too bad it's not like that with a ceramic power additive. I...
by F-250 Restorer
Wed Jun 27, 2018 2:27 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 3X2 EFI EXH. Manifolds
Replies: 14
Views: 508

Re: 3X2 EFI EXH. Manifolds

Thanks. I checked with another calculator. Max hp would be just over 300hp. I run a hedman header now, have for 10 years. Using the efi's would be to keep the heat down. But, once I try to cut off one runner of the first efi manifold and weld it shut, I'll better know what I'm getting into. Of cours...
by F-250 Restorer
Tue Jun 26, 2018 11:30 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 3X2 EFI EXH. Manifolds
Replies: 14
Views: 508

3X2 EFI EXH. Manifolds

I thought it would be fun to take 2 sets of the efi manifolds and make an exh. system that uses 3 of the manifolds that exit into one single pipe, diameter to be determined. I know this is a learning project with the welding of cast iron, etc., but I love the lack of heat, stability, dependability, ...
by F-250 Restorer
Thu Jun 07, 2018 3:51 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 300 torque build 85 Bronco
Replies: 51
Views: 2560

Re: 300 torque build 85 Bronco

I have the same intake. I was going to weld up a 90* hose bib for the coolant, but like the ones you have. Where did you find them? I assume those are Clifford headers. They are nice, however, they will seal in your starter. I switched to a much smaller efi starter to avoid that problem. Also, after...
by F-250 Restorer
Mon Apr 16, 2018 12:44 am
Forum: 240-300 "Big Block" Six Performance
Topic: Best sound. From exhaust
Replies: 11
Views: 875

Re: Best sound. From exhaust

On the other forum, FTE, down in the basement where they keep the inline 6 forum, do a search. There was a long-running thread about exhaust systems. It had a lot of vids with exhaust sounds of various systems, single, dual pipes, diff. mufflers, straight pipes, glass packs, etc. The thread starter ...
by F-250 Restorer
Fri Aug 25, 2017 1:44 am
Forum: 240-300 "Big Block" Six Performance
Topic: My Ford 300 High Performance Engine Build
Replies: 25
Views: 5817

Re: My Ford 300 High Performance Engine Build

My 3-2-1 headers merge into a single 2.5" megaphone. About the same cross sectional area as two 1.75" outlets. Making about 550 hp na. Frenchtown Fly: I wonder how much it would make if it wasn't restricted like that. If you posted the above to respond to my note about the two 1.75" ...
by F-250 Restorer
Wed Aug 16, 2017 12:12 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Recommended carburetors for mild upgrade
Replies: 38
Views: 3807

Re: Recommended carburetors for mild upgrade

I don't know why Offy began writing that on their intakes. I suspect it is because the newer ones may be made in China, and so there are some quality concerns regarding the porosity of the casting.
by F-250 Restorer
Sun Aug 13, 2017 2:22 am
Forum: 240-300 "Big Block" Six Performance
Topic: Recommended carburetors for mild upgrade
Replies: 38
Views: 3807

Re: Recommended carburetors for mild upgrade

Kevin, are you still making or are you willing to make, those heat plates? Just wondering. I may make it myself as I've got some good steel plate stock and the necessary tools, but I'm just fairly certain yours look better than mine will. Cutting the thick plate stock is really a pain for my setup ...
by F-250 Restorer
Sat Aug 12, 2017 3:46 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Big Block Chevy Roller Rockers
Replies: 7
Views: 1053

Big Block Chevy Roller Rockers

I am hoping this thread will be used for the benefit of others. I am concerned with fitment and exact measurements with the 1.6 big block Chevy roller rockers. I would like to hear from someone knowledgeable, who has used, or is using, the bbc r.rockers, and who can explain the differences between t...
by F-250 Restorer
Thu Aug 10, 2017 9:09 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Recommended carburetors for mild upgrade
Replies: 38
Views: 3807

Re: Recommended carburetors for mild upgrade

The Edelbrock 500 cfm, 1403, with electric choke will work fine, as will the Holley the other member mentioned. The Holley 1848, 465 cfm, works well too. Summit Racing also makes, or, I should say that Holley makes it and sells it through Summit, a 500 cfm carburetor that is a copy of the legendary ...
by F-250 Restorer
Tue Aug 01, 2017 12:43 am
Forum: 240-300 "Big Block" Six Performance
Topic: EFI Head Combustion Chamber Size
Replies: 2
Views: 542

Re: EFI Head Combustion Chamber Size

I have an interesting tidbit that may help someone looking for a solution about how to lower compression on a build gone wrong with too compression. A forum member somewhere had a efi head. I believe he relied on info from Clifford, rather than measuring and running the numbers himself to calculate ...
by F-250 Restorer
Sun Jul 30, 2017 2:01 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Cam bearing size differences!!!
Replies: 11
Views: 1505

Re: Cam bearing size differences!!!

THE FRENCHTOWN FLYER wrote:All cam journals for all model years are the same. Its the block bearing shell bores that changed.


Then it must be possible to purchase cam bearings with various OD's?
by F-250 Restorer
Wed Jul 26, 2017 1:13 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Cam bearing size differences!!!
Replies: 11
Views: 1505

Re: Cam bearing size differences!!!

Currently I'm working on a book about e-fans. When that is published I'd like to begin a book about the 300, the tractor engine that went mainstream, then fizzled out. I have all this info in files. I simply need to organize it and fill in a bit here and there. The problem with that is the problem w...
by F-250 Restorer
Tue Jul 25, 2017 9:16 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Cam bearing size differences!!!
Replies: 11
Views: 1505

Cam bearing size differences!!!

I found this info long ago. I thought it may help those doing a rebuild. If I remember correctly, it was about 1985 that Ford changed the length of their valves too. I'm sure someone will chime in here with the exact year. 1985-87 Ford 300 CID (4.9L) Engines The Form Motor Company has revised the ca...
by F-250 Restorer
Wed Jul 19, 2017 2:29 pm
Forum: 240-300 "Big Block" Six Performance
Topic: My Ford 300 High Performance Engine Build
Replies: 25
Views: 5817

Re: My Ford 300 High Performance Engine Build

A very nice engine. The EFI manifolds exit at 1.75". Several sites I've checked show that max HP for dual 1.75" is 220 hp. I found that running a 3g alternator required a double v belt to to prevent belt slippage/squeal. You may find otherwise. Here is a photo of a friend's hotrod with a h...
by F-250 Restorer
Wed Jul 05, 2017 9:18 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Street 300 L6 Motor
Replies: 205
Views: 18735

Re: Street 300 L6 Motor

[/quote] I have built a few motors nearly identical to your concept. I used the dual EFI exhausts and I think they will RPM better than the HD single. With good head work it will meet or exceed your 200 hp objective and pull strong to 5000 rpm. ...[/quote] What would be interesting is whether those ...
by F-250 Restorer
Mon Jul 03, 2017 8:53 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Street 300 L6 Motor
Replies: 205
Views: 18735

Re: Street 300 L6 Motor

Your build sounds interesting. But with a flat top piston won't it be difficult to keep the c.r. to 9.0:1? You should also consider the dynamic c.r. I believe you need to be under 7.5 to avoid pinging. You might want to consider using the early 300 rod. That will allow you to use a 351 W piston, whi...
by F-250 Restorer
Mon Jul 03, 2017 6:01 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Spark Plug Tech
Replies: 8
Views: 1319

Re: Spark Plug Tech

I thought someone might actually have a chart or graph showing the various plugs available for the 300, and the different heat ranges for each, and when to use which, according to the mods you have.

But that was wishful thinking. This engine has been out of production for 20+ years.
by F-250 Restorer
Sat Jul 01, 2017 2:37 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Spark Plug Tech
Replies: 8
Views: 1319

Re: Spark Plug Tech

Here is a photo link. https://goo.gl/photos/d5MgFSYJXY1iAsn26 These are stock autolite plugs for a 78 300. The center electrode is now pointed. I wonder what causes that. Edit: I think I found the answer: Appearance & Symptoms: The insulator will have a glazed white appearance and may have small...
by F-250 Restorer
Fri Jun 30, 2017 8:58 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Spark Plug Tech
Replies: 8
Views: 1319

Spark Plug Tech

I am installing a new MSD 6A (digital), and have going through the ignition system so all the components are good--wires, cap and rotor, coil, and last I changed the plugs. I was a bit perplexed by the plugs. The center electrode was worn and had become pointed. They had between 40-50k miles on them...
by F-250 Restorer
Mon Jun 26, 2017 9:21 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Clifford shorty Headers on a stock 240 L6 in a Econoline van
Replies: 12
Views: 1745

Re: Clifford shorty Headers on a stock 240 L6 in a Econoline van

Regarding the Clifford header flange being thinner than Clifford intake flange: I found the same issue using an Offy intake with the Hedman header. To deal with it I took the oem thick washers, clamped them in vise grips, and ground down one side until they sat flat. After 8 years and never a leak. ...
by F-250 Restorer
Sat Jun 24, 2017 9:44 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Eugene's 6 into 1 header
Replies: 16
Views: 2985

Re: Eugene's 6 into 1 header

What is the diameter of the collector?
by F-250 Restorer
Tue May 09, 2017 11:11 am
Forum: 240-300 "Big Block" Six Performance
Topic: Low performance offenhausen duel plane
Replies: 18
Views: 4953

Re: Low performance offenhausen duel plane

Hello. Generally, if you want a response from readers, it is best to ask a question.
by F-250 Restorer
Mon May 08, 2017 2:00 am
Forum: 240-300 "Big Block" Six Performance
Topic: 300" L6 Piston & Head Information
Replies: 57
Views: 6421

Re: 300" L6 Piston & Head Information

I skimmed much of the posts, so if this has been covered I'm sorry.

To the list of heads, the 240, 300 carb, and the 4.9 efi, I think you need to add one. In 82 Ford made a 300 carbed head with odd ridges in the c.chambers that cut down the cc volume to about 72cc. I have one.
by F-250 Restorer
Sat Apr 29, 2017 1:25 am
Forum: 240-300 "Big Block" Six Performance
Topic: Ignition Selection Help
Replies: 16
Views: 2043

Re: Ignition Selection Help

Pmuller9: Check out the Crane ignition boxes. I've read some good reports about them online. I called MSD today to arrange sending in my unit to have it repaired. I was on hold for 33 minutes. Called another person (had to call accounting to speak to a living person, since there is NO CUSTOMER SERVI...
by F-250 Restorer
Thu Apr 27, 2017 4:24 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Ignition Selection Help
Replies: 16
Views: 2043

Re: Ignition Selection Help

From what I just saw with a quick Google search is that the Summit box is made by MSD/MALLORY/HOLLEY in the same facility and identical to a comparable unit... Food for thought. Thanks. But I only read one guy (on the HAMB) who mentioned that he toured MSD and they were constructing the Summit boxe...
by F-250 Restorer
Thu Apr 27, 2017 1:24 am
Forum: 240-300 "Big Block" Six Performance
Topic: Ignition Selection Help
Replies: 16
Views: 2043

Re: Ignition Selection Help

Pmuller9, I will ck the advance as you mentioned. I'm removing the Summit box, after I check the advance. I'll send the msd in and have it refurbished by msd. I rather surprised by the lack of performance with the summit box. All the specs show it as putting out greater energy than the msd, yet the ...
by F-250 Restorer
Sat Apr 22, 2017 3:35 am
Forum: 240-300 "Big Block" Six Performance
Topic: Ignition Selection Help
Replies: 16
Views: 2043

Re: Ignition Selection Help

Yes, I tried that. It wouldn't start.

I'm wondering if Summit got the instructions wrong about which wire to cut for a 6 cyl engine. I guess I could run with 24* advance, which is where it wants to run, but that can't be right.
by F-250 Restorer
Fri Apr 21, 2017 9:34 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Ignition Selection Help
Replies: 16
Views: 2043

Re: Ignition Selection Help

Exactly. Without touching the dizzy. MSD was at 8btdc. With the Summit box it is at the advanced edge--off the edge-- of the timing index mounted above the harmonic balancer. I can't be sure since it is off the chart, but I'm guessing 16-18 btdc. And, it seems slugish, lacks pep, as though it needs ...
by F-250 Restorer
Fri Apr 21, 2017 3:39 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Ignition Selection Help
Replies: 16
Views: 2043

Ignition Selection Help

For years I ran an MSD 6a analog box with an MSD street blaster TFI coil: https://www.summitracing.com/parts/msd-8227/overview/ I should mention that I use a DuraSpark2 distributor. But the MSD died and I thought I'd try the Summit box. They had two choices. One was a bit less power, the other a bit...
by F-250 Restorer
Mon Apr 17, 2017 12:13 am
Forum: 240-300 "Big Block" Six Performance
Topic: Intake/Exhaust Manifold studs
Replies: 5
Views: 994

Re: Intake/Exhaust Manifold studs

Or ... check Hillco dot com. I used to sell the stud kits, and got all my fasteners from them.
by F-250 Restorer
Thu Apr 13, 2017 3:18 pm
Forum: 240-300 "Big Block" Six Performance
Topic: DUI Distributor Data?
Replies: 2
Views: 689

DUI Distributor Data?

After smoking my MSD, I've been researching various ignition systems. I'm quite surprised to find zero data regarding the Performance Distributors' DUI. Getting the millijoules of spark, or volts to coil from them is as difficult as getting a straight answer about whether their stuff is made in Chin...
by F-250 Restorer
Sat Apr 08, 2017 11:33 am
Forum: 240-300 "Big Block" Six Performance
Topic: Classic Inlines Cheap Performance Ignition
Replies: 2
Views: 911

Classic Inlines Cheap Performance Ignition

I was reading about ignition systems at gofastforless dot com, and came across a great, inexpensive ignition system ... for $25! Then I found that Performance Distributors, the co. that makes/sells DUI distributors, sells the same module, painted, with a nice sticker on it, for $139! This is the sys...
by F-250 Restorer
Fri Mar 31, 2017 8:52 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Tall valve cover
Replies: 10
Views: 1878

Re: Tall valve cover

Contact CNC dude here on the forum. He makes a spacer that sits under the v.cover.
by F-250 Restorer
Sun Mar 19, 2017 1:20 am
Forum: 240-300 "Big Block" Six Performance
Topic: Power by Ford Studebaker truck
Replies: 62
Views: 7072

Re: Power by Ford Studebaker truck

Thanks for the link, J.R. Yes, I checked that site when I had the R11. I seem to remember them coming on Ford trucks up until 67-68ish. I've often wondered if I could have used it (the OD tail piece) like this (http://classicbroncos.com/ebbarn/overdrive.html) behind a C6, as you see they have done b...
by F-250 Restorer
Thu Mar 16, 2017 1:43 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Power by Ford Studebaker truck
Replies: 62
Views: 7072

Re: Power by Ford Studebaker truck

What a good looking truck. I like it. Many of the old Studebakers (not sure about the trucks) had the Borg Warner three speed overdrive transmissions. It was quite an interesting trans-- gave the driver a high and a low to each gear. I had one, and wanted to use it behind my 300, but parts were like...
by F-250 Restorer
Thu Mar 09, 2017 3:13 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Screw In Rocker Studs
Replies: 18
Views: 2579

Re: Screw In Rocker Studs

I would add, that if a shop is installing the studs, make sure they are ARP. I had my shop buy them and install them, and the tops of three of the studs sheared off. I consider it a miracle, on par with the parting of the Red Sea, that my engine didn't suck a valve. Since changing to ARP studs I've ...
by F-250 Restorer
Sun Mar 05, 2017 7:57 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Screw In Rocker Studs
Replies: 18
Views: 2579

Re: Screw In Rocker Studs

Now, what if someone were to keep using stock style rockers and locknuts, but install screw in studs, would machining down the pedestals still have to be done? It looks to me that there's plenty of room with how far the stock rockers sit up on the press in studs. The bosses still need to be machine...
by F-250 Restorer
Mon Feb 27, 2017 3:36 pm
Forum: 240-300 "Big Block" Six Performance
Topic: I accidentally bought the old style offenhauser 360 intake
Replies: 20
Views: 2612

Re: I accidentally bought the old style offenhauser 360 intake

I believe what the op is trying to say is that the plenum has a divider that rises all the way from bottom of the intake to carb mounting surface. The mounting surface is divided into four holes, as is all the new DP intakes.
by F-250 Restorer
Sun Feb 26, 2017 10:01 pm
Forum: 240-300 "Big Block" Six Performance
Topic: I accidentally bought the old style offenhauser 360 intake
Replies: 20
Views: 2612

Re: I accidentally bought the old style offenhauser 360 intake

Well, I question that reasoning. The C type Offy is used with the carb oriented with the primaries toward the grill, and it works fine. Perhaps the rear three cylinders run slightly leaner than the front, but certainly nothing to be concerned about, or there would have been an uproar all over the fo...

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