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Search found 178 matches

by Blairsville Ed
Fri Oct 18, 2019 9:37 am
Forum: 240-300 "Big Block" Six Performance
Topic: Holley 5200 carb
Replies: 68
Views: 2016

Re: Holley 5200 carb

Primary idle 50, main 135, air bleed 195 Secondary idle 45, main 130, air bleed 180 AFR numbers are estimated since I have a narrow band O-2 sensor 20 mph 17 to 1 60 mph 15 to 1 My drive to town and back is a mix of highway and city and I get around 15 mpg I don’t drive at constant highway speeds ve...
by Blairsville Ed
Thu Oct 17, 2019 6:05 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Iridium spark plugs
Replies: 9
Views: 211

Re: Iridium spark plugs

I tried side gapping the plugs......I now have a noticeable miss when accelerating from a stop.
Oh well....

Fortunately, Autolite 45’s are cheap
by Blairsville Ed
Wed Oct 16, 2019 8:06 am
Forum: 240-300 "Big Block" Six Performance
Topic: Iridium spark plugs
Replies: 9
Views: 211

Re: Iridium spark plugs

If it’s a zero deck block( actually I’m about .005 beyond zero) would the extra turbulence negate the benefit of an extended tip plug. Also, concerning the stock plugs, I’ve seen #45 and #124 autolite plugs recommended. The 124’s are shorter tipped than the 45’s. And....... side gapping. Any benefit?
by Blairsville Ed
Tue Oct 15, 2019 8:23 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Iridium spark plugs
Replies: 9
Views: 211

Re: Iridium spark plugs

Is there any benefit of getting the firing tip deeper in the combustion chamber?
by Blairsville Ed
Tue Oct 15, 2019 12:10 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Iridium spark plugs
Replies: 9
Views: 211

Iridium spark plugs

Would iridium sparks plugs be better for a point, condenser ignition system since they require less voltage to fire?
by Blairsville Ed
Tue Oct 15, 2019 10:37 am
Forum: 240-300 "Big Block" Six Performance
Topic: Oil pan gasket
Replies: 2
Views: 91

Oil pan gasket

I have seen it posted, that the newer style pan gasket can work on an older pan with some work, but I haven’t seen what kind of work needs to be done.
What should be done to an older style pan to accept the newer gasket
by Blairsville Ed
Sun Sep 29, 2019 8:43 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Holley 5200 carb
Replies: 68
Views: 2016

Re: Holley 5200 carb

If you set both cabs next to each other, with the float bowls facing you, the Holley would have the chock assembly and the primary barrel on the right. The Weber would have to choke assembly and the primary barrel on the left.
by Blairsville Ed
Sun Sep 29, 2019 7:43 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Holley 5200 carb
Replies: 68
Views: 2016

Re: Holley 5200 carb

I’m only working on a Holley 5200. From what I understand, it’s a licensed copy of the Weber 32/36.
The only difference that I have seen online is that the Holley 5200 is a copy that is a reverse image of the Weber.
by Blairsville Ed
Sun Sep 29, 2019 1:38 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Holley 5200 carb
Replies: 68
Views: 2016

Re: Holley 5200 carb

Those would definitely work.
I rechecked the main jets. They appear to be an M-5x.8. That is really close to a 10/32. The 10/32 screws that I have thread into an M5x.8 die but they’re a little loose. M5 is .196 and #10/32 is .190.
So, the Holley air Jets might work as main jets
by Blairsville Ed
Sun Sep 29, 2019 9:25 am
Forum: 240-300 "Big Block" Six Performance
Topic: Holley 5200 carb
Replies: 68
Views: 2016

Re: Holley 5200 carb

There are idle jets, main jets, air corrector main jets and emulsion tubes These are all changeable. And, if you really want to have fun, you can drill out the pressed in idle air jets, then tap it to 10/32 and use Holley jets to fine tune the idle circuit. I have already done this to the primary id...
by Blairsville Ed
Sat Sep 28, 2019 10:44 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Holley 5200 carb
Replies: 68
Views: 2016

Re: Holley 5200 carb

Correct, larger number equals more fuel flow I believe that you need to use Weber 32/36 jets I have read that the Holley jets do not fit I ordered jets from Pegasus for a Weber 32/36 and they fit The ones I ordered from eBay did not fit. It’s important to know that the venturi sizes are 26mm primary...
by Blairsville Ed
Sat Sep 28, 2019 7:16 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Holley 5200 carb
Replies: 68
Views: 2016

Re: Holley 5200 carb

The 140 main and 132 secondary jet is how the carb came to me from an eBay seller. That could be how the Pinto engine ran best. Currently, I’m running a 140 main and a 150 secondary. With these jets, I’m running a little rich. I tried down sizing the idle jets today but it appears that a 50 idle jet...
by Blairsville Ed
Sat Sep 28, 2019 5:51 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Holley 5200 carb
Replies: 68
Views: 2016

Re: Holley 5200 carb

Quadrajet parts They list it as a screw that fits Holley 5200 and Motorcraft 2100 carbs. I’m doing more jetting this week I’ll post the results. Also, I noticed that the accelerator pump is set to operate with the slightest throttle movement. Engine vibration alone could cause extra fuel to be injec...
by Blairsville Ed
Fri Sep 27, 2019 7:37 am
Forum: 240-300 "Big Block" Six Performance
Topic: Holley 5200 carb
Replies: 68
Views: 2016

Re: Holley 5200 carb

Since I have had my Holley 5200, I have been puzzled by the idle mixture screw setting. With a proper idle jet installed, the mixture screw needed to be 4 turns out to get a good steady idle. Internet wisdom indicated that a larger idle jet was needed however, the larger jet ran the off idle mixture...
by Blairsville Ed
Thu Sep 26, 2019 8:33 am
Forum: 240-300 "Big Block" Six Performance
Topic: THROTTLE SHAFT REBUSH - REBUILD, 2100 / 2150
Replies: 35
Views: 900

Re: THROTTLE SHAFT REBUSH - REBUILD, 2100 / 2150

I was a tool maker for 20 years and I ground a lot of step reamers.
The length of the pilot is the problem as most chucking reamers are not that long.
One solution would be a counterbore with a removable pilot. You could use drill blanks for the pilot.
by Blairsville Ed
Mon Sep 16, 2019 9:12 am
Forum: 240-300 "Big Block" Six Performance
Topic: Custom intake manifold
Replies: 15
Views: 517

Re: Custom intake manifold

Has anyone tried this manifold with a single 2 barrel carb?
by Blairsville Ed
Sun Sep 15, 2019 8:59 am
Forum: Steering and Suspension
Topic: F100 caster pull
Replies: 9
Views: 154

Re: F100 caster pull

I know that Ford had equipment to bend or twist these I beams to correct camber and caster. I have read that it takes a 100 ton hydraulic ram to do the bend or twist and that it needs to be at the section of the I beam between the radius arm and the spindle. The fixturing needed to accomplish a cast...
by Blairsville Ed
Sat Sep 14, 2019 8:04 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Custom intake manifold
Replies: 15
Views: 517

Re: Custom intake manifold

Ok... that’s what I needed to know.
It would be a long project with lots of welding.
Thanks for your input FTF!!
by Blairsville Ed
Sat Sep 14, 2019 7:10 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Custom intake manifold
Replies: 15
Views: 517

Re: Custom intake manifold

It’s a nice setup but I am not quite ready for dual carbs.

I would like to know if fabricating a better flowing intake would be beneficial in normal driving conditions, and for a 240, what would be the optimal runner diameter, and the plenum volume.
by Blairsville Ed
Sat Sep 14, 2019 9:49 am
Forum: 240-300 "Big Block" Six Performance
Topic: Custom intake manifold
Replies: 15
Views: 517

Custom intake manifold

1968 F100, 240, 2 barrel, 3.70, quad on the rod Has anyone constructed an intake manifold from scratch? How much does the offy intake manifold improve performance ? I’m considering welding up an intake using round steel tubing but I do not know what diameter tubing would be best, and would a better ...
by Blairsville Ed
Fri Sep 13, 2019 9:12 am
Forum: Steering and Suspension
Topic: F100 caster pull
Replies: 9
Views: 154

Re: F100 caster pull

Yes, I did replaced the I beam pivot bushing. That actually corrected a camber issue. I just re did the king pin bushings. I originally used the nylon bushings on the king pins but they are not very close. I had 1/16 of movement in the king pin bushing when measured at the top of the tire. It also w...
by Blairsville Ed
Wed Sep 11, 2019 8:55 pm
Forum: Steering and Suspension
Topic: F100 caster pull
Replies: 9
Views: 154

F100 caster pull

1968 F100. 240. 3.70. Quad on the rod I’ve got the older style twin I beam, king pin steering. I’ve replaced every bushing on the truck, and I have new tires. Camber is good, toe is good. The truck pulls to the right. Not a terrible amount but enough that I would like to correct it. Caster is : driv...
by Blairsville Ed
Sat Sep 07, 2019 9:59 am
Forum: 240-300 "Big Block" Six Performance
Topic: Holley 5200 carb
Replies: 68
Views: 2016

Re: Holley 5200 carb

I hope your recovering well. Sounds like you have a good doctor.
by Blairsville Ed
Wed Sep 04, 2019 5:52 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Holley 5200 carb
Replies: 68
Views: 2016

Re: Holley 5200 carb

The sync kit is not necessary, it converts the Holley 5200 to a standard 2 barrel where both barrels open at the same time. I installed the kit to compare the performance under a heavier load.
by Blairsville Ed
Mon Sep 02, 2019 6:10 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Holley 5200 carb
Replies: 68
Views: 2016

Re: Holley 5200 carb

Update: I made a sync kit for my 5200. I copied the kits that are currently available online. I think I posted this already, but my opinion of the 5200 is that it will work well if you drive primarily on flat ground without towing or hauling weight. The small primary barrel will give you good econom...
by Blairsville Ed
Sat Aug 31, 2019 8:48 am
Forum: 240-300 "Big Block" Six Performance
Topic: '69 block worth keeping?
Replies: 3
Views: 229

Re: '69 block worth keeping?

Where are located? I might be interested in a good block.
by Blairsville Ed
Tue Aug 27, 2019 9:12 am
Forum: 240-300 "Big Block" Six Performance
Topic: Making a 240 equal to a 300
Replies: 18
Views: 771

Re: Making a 240 equal to a 300

I’m using stock springs currently. I definitely have to increase my knowledge of camshafts. All my previous engine performance work was with 2 stroke outboard motors. Compression was always measured as cranking speed psi. I knew that I could run these engines with 165 psi on 93 octane at 6000rpm all...
by Blairsville Ed
Mon Aug 26, 2019 6:46 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Making a 240 equal to a 300
Replies: 18
Views: 771

Re: Making a 240 equal to a 300

The Erson E270101 cam?
Stock rockers or Chevy Rockers.
by Blairsville Ed
Sun Aug 25, 2019 1:41 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Making a 240 equal to a 300
Replies: 18
Views: 771

Re: Making a 240 equal to a 300

The steeper grades did require full throttle although it seemed that 1/2 throttle worked the same as full throttle. The same thing occurs when I pull my pontoon boat up the ramp. Full throttle is no better than 1/2 throttle.
by Blairsville Ed
Sun Aug 25, 2019 9:26 am
Forum: 240-300 "Big Block" Six Performance
Topic: Making a 240 equal to a 300
Replies: 18
Views: 771

Re: Making a 240 equal to a 300

A very interesting write up, And a definitive answer. A cam and or a higher compression piston in a 240 will not produce the 300’s low end torque. I had to drive from Blairsville, Ga to Knoxville,Tn yesterday. There’s no easy way to get there. You have to cross a set of ridges and valleys with lots ...
by Blairsville Ed
Sat Aug 24, 2019 7:51 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Making a 240 equal to a 300
Replies: 18
Views: 771

Re: Making a 240 equal to a 300

I smoothed out the area around the valve boss. I started by machining the exhaust seats for steel inserts. I used a boring head on my Bridgeport mill. After the seat was cut I used a tool bit with a 1/2” radius to blend the bowl underneath the seat until it just touched the bottom of the bowl. I did...
by Blairsville Ed
Sat Aug 24, 2019 8:56 am
Forum: 240-300 "Big Block" Six Performance
Topic: Making a 240 equal to a 300
Replies: 18
Views: 771

Making a 240 equal to a 300

1968 F100, 240, 3.70, 4 on the tree or some say quad on the rod Is it possible to make the 240 equal to or greater than a stock 300? Specifically, it’s torque, pulling power. I already have the Chevy rockers, efi exhaust, 2 barrel carb, light porting job has also been done. I’m guessing a cam would ...
by Blairsville Ed
Tue Aug 20, 2019 8:25 am
Forum: 240-300 "Big Block" Six Performance
Topic: Quick jetting question Carter YF
Replies: 17
Views: 734

Re: Quick jetting question Carter YF

Carbs can be challenging at times! It this a large Carter YF? 1-3/4” throttle bore? They did make smaller YF’s. Make sure the basics are correct, Float height, float heavy No vacuum leaks Accelerator pump check ball present and seated properly It shouldn’t be running excessively rich with a.104 main...
by Blairsville Ed
Fri Aug 16, 2019 8:28 am
Forum: 240-300 "Big Block" Six Performance
Topic: Holley 5200 carb
Replies: 68
Views: 2016

Re: Holley 5200 carb

I should have taken some pics but I did not. There were some pics on the Ford truck blog showing a guy milling the head. That’s where I got the idea from. I have 2 mounting blocks available if anyone is interested. The one on the left is for a Carter YF, the one in the middle is for the Holley 5200....
by Blairsville Ed
Thu Aug 15, 2019 7:19 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Holley 5200 carb
Replies: 68
Views: 2016

Re: Holley 5200 carb

There’s a 3/8 stud on the opposite side with a backing plate on the bottom. I used standard 1/32 gasket material to seal. No additional sealer was needed. The cutout in the manifold was milled. No welding was needed. The 2 bolt holes are already there, you’ll need to install the threaded inserts. In...
by Blairsville Ed
Wed Aug 14, 2019 8:22 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Holley 5200 carb
Replies: 68
Views: 2016

Re: Holley 5200 carb

I had to reverse the linkage lever on the carb, which put the pin on top. I then made an extension rod for the stock linkage.
by Blairsville Ed
Wed Aug 14, 2019 8:15 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Holley 5200 carb
Replies: 68
Views: 2016

Re: Holley 5200 carb

heres a few pics
by Blairsville Ed
Mon Aug 12, 2019 2:18 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Holley 5200 carb
Replies: 68
Views: 2016

Re: Holley 5200 carb

1968 F100. 240 It’s a 1968 F100 with a 240. I have put in the Chevy rocker arms, milled the deck to zero, milled the head .030, three angle valve job with some minor porting, efi exhaust, milled the intake and made an adapter plate. Gas mileage ... 15-16, the same as I got with the Carter YF. I thin...
by Blairsville Ed
Sun Aug 11, 2019 9:15 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Holley 5200 carb
Replies: 68
Views: 2016

Re: Holley 5200 carb

1958 F100. 240 4 on the tree. 3.70 I’m currently running a Holley 5200. My question is..... has anyone installed a sync kit? It would convert the carb to a standard 2 barrel without the extra cost and work of installing a Motorcraft 2100. Just wondering if anyone has done this and how did it perform.
by Blairsville Ed
Sat Aug 10, 2019 10:56 am
Forum: 240-300 "Big Block" Six Performance
Topic: Quick jetting question Carter YF
Replies: 17
Views: 734

Re: Quick jetting question Carter YF

It runs on the primary up to about 2/3 throttle, then the larger secondary opens. I got the idea from the Jeep website. They’re running a 4.0 inline six, and the guys on the small block side of this blog also use them. Each barrel has a main jet, main air bleed and an idle jet. The idle air bleed is...
by Blairsville Ed
Fri Aug 09, 2019 9:28 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Quick jetting question Carter YF
Replies: 17
Views: 734

Re: Quick jetting question Carter YF

It looks like the Holley 5200 is around 280 cfm. It’s a staged 2 barrel with a small primary barrel. I find that the 240 works well with a light load. The staged 2 barrel has a nice kick when the secondary opens. When you put a load on the 240, like towing a small boat, the bigger carb doesn’t help ...
by Blairsville Ed
Fri Aug 09, 2019 7:54 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Quick jetting question Carter YF
Replies: 17
Views: 734

Re: Quick jetting question Carter YF

I swapped my Carter out last year for a Holley 5200 staged 2 barrel. There’s a lot of jetting choices with the 5200 and I was struggling with the correct mixture, so , I welded in a bung and got a basic narrow band O-2 sensor. You can read these with a voltmeter. It’s not as accurate as a wide band ...
by Blairsville Ed
Thu Aug 08, 2019 5:02 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Quick jetting question Carter YF
Replies: 17
Views: 734

Re: Quick jetting question Carter YF

I have a 1968 F100 with a 240

I spent a lot of time working on the jetting with my Carter YF.
It came with a .104 main jet. The leanest jet I could run was a .102. The metering rod adjustment will not over come a .091 jet. ( in my opinion)
by Blairsville Ed
Sat Aug 03, 2019 9:03 am
Forum: 240-300 "Big Block" Six Performance
Topic: 240 cooling fan
Replies: 7
Views: 587

Re: 240 cooling fan

I went with a 6 blade nylon fan, mounted 7/8 inch from the radiator. Over heating issue cured. In retrospect, I caused my overheating problem by adding a clutch unit to the existing steel fan without adding a shroud. The clutch moves the fan blade away from the radiator which necessitates using a sh...
by Blairsville Ed
Sun Jul 28, 2019 7:13 pm
Forum: Transmission & Drivetrain
Topic: 3 on the tree to a 4 on the tree
Replies: 13
Views: 1030

Re: 3 on the tree to a 4 on the tree

Update with in dash reverse cable mount
by Blairsville Ed
Thu Jul 25, 2019 10:02 am
Forum: 240-300 "Big Block" Six Performance
Topic: PCV valve
Replies: 3
Views: 290

Re: PCV valve

It’s new
by Blairsville Ed
Thu Jul 25, 2019 7:29 am
Forum: 240-300 "Big Block" Six Performance
Topic: PCV valve
Replies: 3
Views: 290

PCV valve

1968 F100, 240, 4 on the tree or quad on the rod

Has anyone had the PCV valves ticking at idle? When it stops ticking the idle seems to improve.
by Blairsville Ed
Sun Jul 21, 2019 7:09 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 240 piston options
Replies: 3
Views: 275

Re: 240 piston options

Has anyone had experience going from a standard piston to a flat top piston. I’m wondering how much the static compression numbers go up.
I’m at 150 psi now.
by Blairsville Ed
Sun Jul 21, 2019 11:04 am
Forum: 240-300 "Big Block" Six Performance
Topic: 240 piston options
Replies: 3
Views: 275

240 piston options

1968 F100. 240 I know that this has been covered somewhere on this board, but I could not locate the info. Which pistons will fit this motor? It has .912 wrist pins. I seen a post that references 302 pistons with different pin offsets. What year 302 pistons ? Compression height? What style piston to...
by Blairsville Ed
Sun Jul 14, 2019 12:03 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 240 cooling fan
Replies: 7
Views: 587

240 cooling fan

1968 F100. 240, 4 on the tree, 3.70 I just finished the ac system and it works well, however, yesterday I had the truck idling with the ac on for about 5 minutes and the temp gauge went up quite a bit. I have the original 17 inch steel fan with an add on clutch. The radiator is new although it’s lar...