Search found 627 matches

by F-250 Restorer
Sun Dec 09, 2018 11:32 am
Forum: 240-300 "Big Block" Six Performance
Topic: Does anyone have any experience with the Clifford 6-8 dual carb setup?
Replies: 10
Views: 321

Re: Does anyone have any experience with the Clifford 6-8 dual carb setup?

I find that very interesting that one of the posters has a set of headers that's been going for 15 years. I have been running my Hedman set for 10+ years. Of course the efi manifolds will last nearly forever, but restrict your flow. One tip I would toss in here is to use grade 8 studs and crimp nuts...
by F-250 Restorer
Fri Dec 07, 2018 1:17 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Rod Bearing width, etc.
Replies: 24
Views: 743

Re: Rod Bearing width, etc.

Do I need to remove all those scratches and pits?
by F-250 Restorer
Thu Dec 06, 2018 7:50 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Rod Bearing width, etc.
Replies: 24
Views: 743

Re: Rod Bearing width, etc.

Here you go.

Image

Image
by F-250 Restorer
Thu Dec 06, 2018 1:08 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Rod Bearing width, etc.
Replies: 24
Views: 743

Re: Rod Bearing width, etc.

pmuller9 wrote:Would you post pictures of the polished piston tops.
Thanks

I will try to get a photo up today.
by F-250 Restorer
Wed Dec 05, 2018 1:11 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Rod Bearing width, etc.
Replies: 24
Views: 743

Re: Rod Bearing width, etc.

Are the pistons are hung on rods? The pins need lube and rods will rust quick if left unprotected. I'd wait to clean them until it's time for assy. Then a few drops of oil on the pins on each side. IDK how your shop did it, but I use engine assy lube on the pins. Normally, any piston work is before...
by F-250 Restorer
Wed Dec 05, 2018 1:08 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Rod Bearing width, etc.
Replies: 24
Views: 743

Re: Rod Bearing width, etc.

I mean that the ring groove must be deeper than the width of the rings so the rings aren't help out past the piston sides. I had a set of rings where the oil rings were too wide and wouldn't let the piston go into the cylinder even though the ring end gap was good. The metric rings and piston groov...
by F-250 Restorer
Tue Dec 04, 2018 11:12 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Rod Bearing width, etc.
Replies: 24
Views: 743

Re: Rod Bearing width, etc.

Sorry, guys. I didn't see the last two replies until now. I'll check end gaps. Good to know. Pmuller, what do you mean the ring depths? Can you please explain. I will do what is needed. Oh, and I know this is a silly question, but today I polished the dish on each piston. Although I blew out each pi...
by F-250 Restorer
Thu Nov 29, 2018 11:07 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Rod Bearing width, etc.
Replies: 24
Views: 743

Re: Rod Bearing width, etc.

I bought these rings, sealed power e-251k 30, and they are supposed to be non-filing. Does that mean I still have to check each set? Also, there was no bevel or mark on either the compression nor oil ring. Just to double check, does that mean install as you will?
by F-250 Restorer
Tue Nov 13, 2018 9:38 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Rod Bearing width, etc.
Replies: 24
Views: 743

Re: Rod Bearing width, etc.

I need to bolt the crank in on a couple of bearings, and a couple of rods/pistons as well. I'm measuring the distance from top of piston to the block deck, so I can have the block milled down in order to achieve the compression ratio I need. How many pistons should I install? And should I do one on ...
by F-250 Restorer
Sun Nov 11, 2018 2:17 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Carb head combustion chamber question.
Replies: 70
Views: 1635

Re: Carb head combustion chamber question.

Did I miss something? Isn't the stock chamber 76cc? with a carbed head? I'm just curious how it got to 83cc. You scribed and opened up the chamber a bit...is that what happened? Are you going to mill the head to lower the cc of the chamber and thereby raise the compression ratio?
by F-250 Restorer
Fri Nov 09, 2018 2:36 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Rod Bearing width, etc.
Replies: 24
Views: 743

Re: Rod Bearing width, etc.

I want to clean up the bores a bit. It was newly bored .030 over and honed. It has 1,000 miles on it, and has been sitting for almost ten years. I've kept the bore oiled, but have noticed some milky rust. I wanted to clean it up before putting the engine back together. Should I pick up a ball hone ...
by F-250 Restorer
Thu Nov 08, 2018 6:05 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Rod Bearing width, etc.
Replies: 24
Views: 743

Re: Rod Bearing width, etc.

The pistons rock from side to side so it is best if the ring gaps are closer to the front or the back of the engine. otherwise 1/3 clocking or some other scheme will be fine considering the rings move around the piston over time. At least they start during break-in at a good location. Thanks again,...
by F-250 Restorer
Thu Nov 01, 2018 10:30 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Rod Bearing width, etc.
Replies: 24
Views: 743

Re: Rod Bearing width, etc.

Excellent information. I will check the width. I looked on youtube to find how to install and clock rings, but I'm never sure of the info I get there. I will check my owner's manual too. Back when we used to clock them at 1/3, one ring gap being a third of the way around the circumference of the pis...
by F-250 Restorer
Thu Nov 01, 2018 12:16 am
Forum: 240-300 "Big Block" Six Performance
Topic: Rod Bearing width, etc.
Replies: 24
Views: 743

Re: Rod Bearing width, etc.

Hello, Pmuller9: Nope, it's been on the shelf for quite a while, and I can only find a main bearing. Did you notice that hole in the rod cap in the photo? That worried me, but the shop said it would be okay, although there was only rod with that hole/defect. https://i.imgur.com/22EcQPG.jpg I saw tha...
by F-250 Restorer
Thu Nov 01, 2018 12:16 am
Forum: 240-300 "Big Block" Six Performance
Topic: Rod Bearing width, etc.
Replies: 24
Views: 743

Re: Rod Bearing width, etc.

Hello, Pmuller9: Nope, it's been on the shelf for quite a while, and I can only find a main bearing. Did you notice that hole in the rod cap in the photo? That worried me, but the shop said it would be okay, although there was only rod with that hole/defect.
by F-250 Restorer
Wed Oct 31, 2018 7:45 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Rod Bearing width, etc.
Replies: 24
Views: 743

Rod Bearing width, etc.

This build has been years in the making. This is the 3rd build for me. The first engine I paid someone to build it and it failed in 1000 miles. The second I paid a pro builder to get 10psi at idle with 20/50 oil and a high volume pump. I could just keep running this engine, having to use high octane...
by F-250 Restorer
Wed Oct 17, 2018 10:33 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Tubing diameter, etc.
Replies: 8
Views: 491

Re: Tubing diameter, etc.

I may go with the Y (2 x 2.5 into 3") right off the shorty collectors. That way I'd only be dealing with one pipe through the engine compartment. At the firewall I'll drop it down inside the frame, alongside the trans, and back to the one in/one out flowmaster 2.5, and exit under the right rear...
by F-250 Restorer
Tue Oct 16, 2018 9:18 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 1986 F-150, c6, 2wd, offy, holley 600 - bad mpg
Replies: 17
Views: 1455

Re: 1986 F-150, c6, 2wd, offy, holley 600 - bad mpg

Surely it would be wise to classify mileage claims into rear end ratios. At 60 mph, the guy with the 3.00 rear is going to be spinning far fewer rpm than the guy with the 3.74 rear.
by F-250 Restorer
Tue Oct 16, 2018 7:04 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Tubing diameter, etc.
Replies: 8
Views: 491

Re: Tubing diameter, etc.

If you can do it yourself, you can create a much better y-pipe than a shop will do. For instance, this is the y-pipe I made vs the old one that a shop made. It's 2" pipe, and takes up more room than my 2.5" pipe. Mine also tucks up above the bronco crossmembers and none of the exhaust is ...
by F-250 Restorer
Mon Oct 15, 2018 10:53 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Tubing diameter, etc.
Replies: 8
Views: 491

Re: Tubing diameter, etc.

Have you considered using a dual in/single out muffler to act as the pressure wave termination box, rather than running a Y into a single in/single out muffler? It seems as if it might simplify things. You could "oversize" the muffler (pipe diameter wise) and use a stepped down (pipe diam...
by F-250 Restorer
Mon Oct 15, 2018 7:09 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Tubing diameter, etc.
Replies: 8
Views: 491

Tubing diameter, etc.

Well, I'm changing from the hedman to Clifford shorty headers. I want to simplify that side of my engine. I've been reading about exhaust systems, and was hoping that those who know more than I do might chime in here with some help. It had been my plan to go with the 2.5" about 3' off the colle...
by F-250 Restorer
Sun Sep 23, 2018 1:06 am
Forum: 240-300 "Big Block" Six Performance
Topic: My bad starter adventure
Replies: 7
Views: 425

Re: My bad starter adventure

Cliffords shorty headers can be made to clear starters that way you can change the starter. Will be my choice for headers if I buy more. I've encountered both small and large case starters and both can be changed easily. The large case starter however the power wire must be angled to avoid the exha...
by F-250 Restorer
Sun Sep 23, 2018 12:56 am
Forum: 240-300 "Big Block" Six Performance
Topic: My bad starter adventure
Replies: 7
Views: 425

Re: My bad starter adventure

I ran the hedman headers with a large case starter for 10+ years. I believe it was a rebuilt one, but don't remember for certain. I did not use a heat shield. I am in S.Cal. Gets hot. When the starter went, I used C clamps and a crow bar to 'move' the collectors out of the way enough to remove the s...
by F-250 Restorer
Mon Sep 10, 2018 12:41 am
Forum: 240-300 "Big Block" Six Performance
Topic: v8 Harmonic ballancer on a 300?
Replies: 1
Views: 264

v8 Harmonic ballancer on a 300?

I was at a car show today. I spoke to a friend showing his 300 hotrod. I commented on his Fisher harmonic balancer, and he said he read on this forum about adapting a v8 (I believe he said 351w or c, but not sure)balancer for a 300. I searched, but couldn't find mention of it. Has anyone come across...
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: 962

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: 492

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: 6
Views: 1203

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: 300

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: 492

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: 492

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: 253

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: 240

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: 827

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: 763

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: 763

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: 763

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: 763

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: 98
Views: 6024

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: 1086

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: 8067

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: 4396

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: 4396

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: 1239

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: 4396

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: 611

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: 1750

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: 1750

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: 1750

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: 8067

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: 24447

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 ...

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