F150 with stock 240 Question

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old28racer
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F150 with stock 240 Question

Post #1 by old28racer » Fri Jun 01, 2018 11:03 pm

May have a chance to pick up a 1969 F150 with a stock 240 motor. I only want to make a couple of small motor improvements at this time as I may in the future install the 300 I am currently building.

The changes I have though about are.

1-- Change the point distributor to a pertronix system
2-- Change log exhaust to dual EFI manifolds & dual exhaust system.
3-- Install 2x1 carb adapter & a Autolite 1.08 2100 carb

Would these changes make a mild motor improvement or open to suggestion?
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Re: F150 with stock 240 Question

Post #2 by Fordman75 » Fri Jun 01, 2018 11:17 pm

Yes they will help. But the carb & adapter to the stock intake will be a much smaller improvement. When compared to a aftermarket intake with the same 2V carb. But it is still better then the stock 1V carb. If you can also take a die grinder and open up the intake and the adapter throat some that will also help flow more air.

The EFI exhaust manifolds will give you the best improvement of your list, when added with a freer flowing exhaust system.

Oh yea and a 69 would be a F100 not a F150. :thumbup: Those are some cool trucks. Makes me miss my old 72 F100's and the 1970 F100 I had.
Ted

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Re: F150 with stock 240 Question

Post #3 by woodbutcher » Sat Jun 02, 2018 9:17 am

:hmmm: You could also go to the DS2 ign system very easily too.JMHO,the DS2 is much better than the Pertronix.More reliable too.
Good luck.Have fun.Be safe.
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Re: F150 with stock 240 Question

Post #4 by bubba22349 » Sat Jun 02, 2018 9:20 am

X2 DSII is a better system and parts are easy to find everywhere. Good luck :thumbup: :nod:
A bad day Drag Racing is still better than a good day at work!

I am still hunting for a project car to build but with my current low budget it's not looking so good. My Ex- Fleet of Sixes these are all long gone! :bang: 1954 Customline 223 3 speed with O/D, 1963 Fairlane project drag car with BB6, 1977 Maverick 250 with C4, 1994 F-150 a 300 with 5 speed.

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Re: F150 with stock 240 Question

Post #5 by old28racer » Sat Jun 02, 2018 6:44 pm

Well guys I am a bit new to this DS2 Ing system stuff and health wise I don't do wrecking yards any more. Does anyone have some pictures of the parts needed and can they be purchased on line along with the harness?

Fordman75 -- type O, she is an all white F100 240 w/3 speed on the column. The column shift 3 speed may not be stock, not sure?

I think grinding out the 2x1 adapter & intake hole will work fine for what I have in mind for this 240 motor. I did the same thing to a
Chevy :( 194 L6 and installed a Holley 94 to it, ran real nice, not a lot of power but a nice around town setup.
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Re: F150 with stock 240 Question

Post #6 by old28racer » Sat Jun 02, 2018 7:11 pm

Another idea that that came to mind. As I don't have a 240 intake laying around but I do have a EFI lower intake tube setup from my 1992 300 build that I was going to build into a 2x2 plenum Autolite 1.08 2100 carb setup. Completing the 300 is a ways down the road so maybe I will go ahead and build the intake.


Question is will two Autolite 2100 1.08 carbs be to much for a basic stock 240? I will still do the Ign, efi exhaust and dual mufflers & pipes upgrades to go along with it.
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Re: F150 with stock 240 Question

Post #7 by Fordman75 » Sat Jun 02, 2018 7:24 pm

The DSII is my favorite set up. Here's a picture that shows everything except the coil with the horse shoe connector.
Image


That wiring harness is a mess of wires. It makes it look a whole lot more complicated then it actually is. here's a diagram that covers the wiring. You can make your own harness pretty easily if you need to.

Image




The 3 on the tree was definitely an option for that truck. My Bahama blue 72 F100 shortbox came stock with the 240/ 3 on the tree. But one of the previous owners converted it to a floor shift, with some cheap aftermarket shifter. It liked to jamb up on me between gears when I would go to shift right in the middle of an intersection! :roll: Once I beefed up the shift arms on the transmission and did a bunch of adjusting on it. I finally got it working right.

2 1.08's will work fine on the 240.
Ted

54 Ford F100/F150 4x4
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Re: F150 with stock 240 Question

Post #8 by old28racer » Sat Jun 02, 2018 10:34 pm

Fordman75 -- Ted thanks for the DS2 parts picture and the wiring drawing. I think I would build the harness from the drawing, it looks straight forward. Can the major parts be purchased on line? The old bones don't do wrecking yards like they used too.

I am glad to hear that you feel if I mildly make the changes I have listed that the 240 will be able to handle two 1.08 carbs and not over carb it. I really thought that the motor would need more cam or more compression or rocker ratio or a combination of the three to be able to run dual 2100 carbs.

Tom
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Re: F150 with stock 240 Question

Post #9 by THE FRENCHTOWN FLYER » Sun Jun 03, 2018 9:49 am

If you're going to modify the stock intake I'd just use a Rochester 2GC carb - they are smaller with a tighter bolt pattern.
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Re: F150 with stock 240 Question

Post #10 by woodbutcher » Sun Jun 03, 2018 9:55 am

:hmmm: DS2 parts should be available at just about any parts store.As I said they are very reliable.The two DS2 setups that I have used(both used by the way and free too)I have put over 200,000 miles on them with ZERO problems.With one exception.Mother nature killed one ign box with a close strike by a lightening bolt to a power transformer.Little hint when installing the ign box.Run an extra ground wire from one of the mount screws to the firewall or some other good grounding spot for a little extra insurance.
Good luck.Have fun.Be safe.
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Re: F150 with stock 240 Question

Post #11 by Harte3 » Sun Jun 03, 2018 11:40 am

THE FRENCHTOWN FLYER wrote:If you're going to modify the stock intake I'd just use a Rochester 2GC carb - they are smaller with a tighter bolt pattern.


That was an option for me when I was planning my build...modifying the stock intake to accommodate a Rochester 2GC or two of them.
'83 F150 300, 0.030 over, Offy DP, Holley 4160/1848-1 465 cfm, Comp Cam 260H. P/P head, EFI exhaust manifolds, Walker Y Pipe, Super Cat, Turbo muffler, Recurved DSII, Mallory HyFire 6a, ACCEL Super Stock Coil, Taylor 8mm Wires, EFI plugs.

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Re: F150 with stock 240 Question

Post #12 by old28racer » Sun Jun 03, 2018 9:41 pm

[b]Harte3 -- FTF --- [/b] If I modify the stock log intake and build my own 2x1 adapter could I use a Holly 94 carb in place of the Rochester 2GC as I have two fresh 94's on my shelf?


woodbutcher -- Thanks for the DS2 information. As I am not up on the DS2 system can you list the main parts that I would need to purchase to build a running unit (I will build my own harness).
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Re: F150 with stock 240 Question

Post #13 by old28racer » Sun Jun 03, 2018 11:15 pm

Well guys after a little research on Small & Big base 2GC carbs it is clear that even the small base with around 278 cfm is is a better choice than one of my 94 that flow about 155 cfm.

The Big base 2GC carb flow 352/381/423/435 cfm dependent on the venture size.

What would be the cfm size to run on the mild modified 240 we have been talking about?
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Re: F150 with stock 240 Question

Post #14 by woodbutcher » Mon Jun 04, 2018 9:25 am

:D Check out post no 7.That shows everything but the coil.Then there is the wiring diagram to build your harness.
Good luck.Have fun.Be safe.
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Re: F150 with stock 240 Question

Post #15 by Fordman75 » Mon Jun 04, 2018 1:12 pm

Distributor from 78-81 ( pick a year and anything 300 powered for a model, like F150 )
Distributor cap spacer
cap/rotor and correct plug wires
Ignition module with blue strain relief
coil ( if you can find a replacement horse shoe connector also get that too ) .
Ted

54 Ford F100/F150 4x4
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Re: F150 with stock 240 Question

Post #16 by old28racer » Mon Jun 04, 2018 11:19 pm

[b]Fordman75 [/b]-- Ted thanks for the numbers and years. The wiring drawing shows most of the parts and looks like a new harness should be straight forward. Just a couple of things to clear up.


1. What is a "horse shoe" connecter? Is it the one making the distributor?


2. Is the 1.1 ohm resister required?


3. Will any 45,000 - 65,000 Hi Performance coil work with the DS2 module?
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Re: F150 with stock 240 Question

Post #17 by pmuller9 » Mon Jun 04, 2018 11:31 pm

old28racer wrote:1. What is a "horse shoe" connecter? Is it the one making the distributor?

https://shop.broncograveyard.com/Igniti ... gKra_D_BwE
old28racer wrote:2. Is the 1.1 ohm resister required?

Yes

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Re: F150 with stock 240 Question

Post #18 by old28racer » Tue Jun 05, 2018 4:16 pm

pmuller9 -- Thanks for the horse shoe connecter information. I looked at their site and they did not state if they carry both male & female ends and I was unable to find any 4 prong connectors listed. Will call and check.


OK guys if I do make a modification to the 240 OEM log intake manifold and go with FTF suggestion on using a Rochester 2GC carb are there any adapters that will work for this combination or are close? If not I will make my own out of pc 1" thick aluminum plate and tapper the 2bl side to the 1bl side for a smooth flow. I will also open up the stock log manifold 1bl hole as much as possible as Fordman75 suggested.


Keep in mind that this is not a full out performance upgrade, just a little better 240 until I put my 300 street motor in. I think the next thing will be the EFI exhaust manifolds, Dual 2 1/2" exhaust with some good flowing mufflers, this setup will work well with the 300 when the change is made.


I think the DS2 module, coil & distributor will be the last change.
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Re: F150 with stock 240 Question

Post #19 by Harte3 » Tue Jun 05, 2018 5:38 pm

Do a bit of searching on the Small Block Forum. There should be considerable discussion and photos of sb log intakes that have been modified to accommodate 2v carbs.
'83 F150 300, 0.030 over, Offy DP, Holley 4160/1848-1 465 cfm, Comp Cam 260H. P/P head, EFI exhaust manifolds, Walker Y Pipe, Super Cat, Turbo muffler, Recurved DSII, Mallory HyFire 6a, ACCEL Super Stock Coil, Taylor 8mm Wires, EFI plugs.

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Re: F150 with stock 240 Question

Post #20 by bubba22349 » Tue Jun 05, 2018 6:56 pm

old28racer wrote:pmuller9 -- Thanks for the horse shoe connecter information. I looked at their site and they did not state if they carry both male & female ends and I was unable to find any 4 prong connectors listed. Will call and check.


OK guys if I do make a modification to the 240 OEM log intake manifold and go with FTF suggestion on using a Rochester 2GC carb are there any adapters that will work for this combination or are close? If not I will make my own out of pc 1" thick aluminum plate and tapper the 2bl side to the 1bl side for a smooth flow. I will also open up the stock log manifold 1bl hole as much as possible as Fordman75 suggested.


Keep in mind that this is not a full out performance upgrade, just a little better 240 until I put my 300 street motor in. I think the next thing will be the EFI exhaust manifolds, Dual 2 1/2" exhaust with some good flowing mufflers, this setup will work well with the 300 when the change is made.


I think the DS2 module, coil & distributor will be the last change.


It's an Easy Peasy swap once you have the parts and harness made. These harness plugs can be gotten at NAPA and other auto parts stores too. Only other sorce is to find good used plugs to use. Good luck :thumbup: :nod: Edited

4 Pin Ignistion Control Module Plug Echlin EC127, Standard S-629, or BWD PT5540, works perfectly on ICM.
https://www.napaonline.com/en/p/ECHEC127

3 Pin Ignistion Control Module Plug. I haven't found a sorce for a new 2 Pin plug, but these 3 Pin Plugs can also be used for the 2 Pin Ignistion Control Module Plug. Just by using the two top side by side pins and wires skipping the bottom wire. By modding the plug nubs it can be used on the Distribitor too. Echlin EC72, Standard S-698, BWD PT5619
https://www.napaonline.com/en/p/ECHEC72
A bad day Drag Racing is still better than a good day at work!

I am still hunting for a project car to build but with my current low budget it's not looking so good. My Ex- Fleet of Sixes these are all long gone! :bang: 1954 Customline 223 3 speed with O/D, 1963 Fairlane project drag car with BB6, 1977 Maverick 250 with C4, 1994 F-150 a 300 with 5 speed.

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Re: F150 with stock 240 Question

Post #21 by old28racer » Tue Jun 05, 2018 8:39 pm

bubba22349 -- Thanks for the part numbers, I will check my local NAPA store to see if they have both the male and female.


As I do not have a 240 OEM log intake manifold to look at can you tell me if the 1v carb to intake is a 2 or 4 bolt setup?

Transdapt has both.
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Re: F150 with stock 240 Question

Post #22 by Fordman75 » Tue Jun 05, 2018 9:32 pm

2 bolt.
Ted

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Re: F150 with stock 240 Question

Post #23 by bubba22349 » Tue Jun 05, 2018 9:39 pm

old28racer wrote:bubba22349 -- Thanks for the part numbers, I will check my local NAPA store to see if they have both the male and female.


As I do not have a 240 OEM log intake manifold to look at can you tell me if the 1v carb to intake is a 2 or 4 bolt setup?

Transdapt has both.


Hi Old28racer, you won't need the other plugs they will come all installed and ready to connect on the Ignistion Control Module as well as the Distribitor unit. The stock log intake has two studs there are two different spacing's center to center. The early models were narrower somtime in later about early 1970's they went to a wider spacing. Good luck :thumbup: :nod:
A bad day Drag Racing is still better than a good day at work!

I am still hunting for a project car to build but with my current low budget it's not looking so good. My Ex- Fleet of Sixes these are all long gone! :bang: 1954 Customline 223 3 speed with O/D, 1963 Fairlane project drag car with BB6, 1977 Maverick 250 with C4, 1994 F-150 a 300 with 5 speed.

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Re: F150 with stock 240 Question

Post #24 by Shorty » Tue Jun 05, 2018 11:05 pm

I have run a MSD blaster coil with my other wise stock ds II ignition for a few years now with no problems. One benefit is it uses ring terminals rather than the horseshoe connector which I much prefer, I have been caught stranded with a loose/faulty connection with the horseshoe, but the ring terminals never seem to come loose
85 F150 on 78 bronco frame C6 np205 welded dana44 front, trussed posi nine inch rear. EFI exhaust manifolds into one 2 1/2" rolls on 35x12.5x15 Maxxis Trepador.

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Re: F150 with stock 240 Question

Post #25 by old28racer » Wed Jun 06, 2018 11:10 am

bubba22349 / Shorty / Fordman75 -- Thanks to all for the help and information.
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Re: F150 with stock 240 Question

Post #26 by old28racer » Thu Jun 07, 2018 12:48 am

OK guys, if I was to build my own adapter to fit the 1969 F100 240 intake manifold and mount an Autolite 2100 carb to it. This is a stock 240 motor that I will make the modification to that are listed above in this thread. I will open up the OEM log intake as much as I can, any comment on how big I can go?


Would you use a 1.08 (287 cfm) or a 1.14 (300 cfm) carb for this setup?
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Re: F150 with stock 240 Question

Post #27 by Fordman75 » Thu Jun 07, 2018 1:32 am

With a stock intake I don't think you need more then the 1.08. But either will work with some tuning.
Ted

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Re: F150 with stock 240 Question

Post #28 by old28racer » Thu Jun 07, 2018 5:12 pm

Thanks Ted for the reply. The 1.08 are much harder to find and might have to run 1.14 as there seems to be a few more of them on line to purchase. I may even try one of the China 2100 1.14 knock offs just to see if they are do able. At $90 it will not kill the bank.
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Re: F150 with stock 240 Question

Post #29 by Fordman75 » Thu Jun 07, 2018 6:12 pm

I wouldn't touch the knock offs with a 10 foot pole. :lol: The knock offs are usually just different enough to where the jets and other tuning parts from the originals won't interchange with them. Makes tuning more difficult. Just because a new part is cheap does not mean it's good. For me I'll stick with the originals. $90 would get me 2 to 6 original 2100's carbs, maybe even more if I'm patient.

The 1.08's should not be hard to find. They are the most common size of any of the Autolite 2100's. But heck any size will work. You could run a 1.33 on it. It will just take some tuning to get it right. So if you want to run a 1.14 run it.
Ted

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300, NP435 4spd, NP205 transfercase

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Re: F150 with stock 240 Question

Post #30 by old28racer » Thu Jun 07, 2018 8:12 pm

Ya I know where you are coming from, OEM :)

$90 might buy you 5 0r 6 1.08 / 1.14 in your part of the country, but not in CA.
If you can find one at pick & steel they get $50 for a single core. Wrecking yards have been well picked over out this way. :mrgreen:

Know any of your buddies out your way that might have a 1.08 or 1.14 for sale?

Double strike out on my 300 motor build as my machine shop found two cracks in the 1992 EFI head that came with the block earlier this year and today my buddy in MN dropped the news that the 240 head he has and I was going to buy has a crack in it also. :bang:


There may be a lot of ford 6 stuff back there but as you know CA is Chevy SB & BB area. If they are inline 6's they will be Chevy 250 & 292. Until my buddy started talking about changing his slant 6 dragster to a 300 ford that was the first time I had heard about 240 & 300 ford motors. That is way I am excited about finding the 1969 Ford F100 with a 240 & 3 on the tree. Hope the deal works out.
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