300 Inline 6 Cylinder (4.9L) Ford - Offy C-Series and Quick Fuel 450 Walkaround

[@unitedstatesirie7431]

My favorite inline 6 cylinder 4 wheel drive FORD pickup truck motor with manual transmission is the 1982 XL250. Good fuel mileage and plenty of torque for towing a horse trailer !

[@thomaswalz3515]

I've a 78 Econoline with the same motor, 3 speed. It has over 375,000 on it, head's never been off it since new. It was purchased new by an uncle, who willed it to me when he passed in '91. It had 5,600 miles on it. I will have this van for the rest of my life... it is totally stock... runs smooth... but thinking of a light mod like yours. Just put new plugs and wires in it today...

[@flatheadfletch]

Yup. Mine has 269000 miles on it. Daily driver one owner. Never had any internal work and still gets between 14-19 mpg

[@MatthewBerginGarage]

Very nice truck. 👍My favorite engine. All kinds of torgue, smooth as glass, tough as nails.😎😊

[@petersipp5247]

I have a 300 in my '65 F100. I ran 240's before the 300. 39 years on the last 240...I put the efi exh mnflds on. Wow ! the difference in power was stunning ! I have the efi exh mnflds on the 300 again. There are two plain jane mufflers then two short pipes that turn before the pass rear tire ( Less back pressure ). I still use the 1V carb and oil bath air filter. The 300 is even stronger than the 240 ( of course ! ). With this set up I don't need a V-8. All the best, Pete 🙂

[@garcjr]

I got a '91 F150. The only thing I wish it has are glass headlights. Damn nice truck you got.

[@Joseph-dq5wb]

One of the best motors Ford ever produced

[@tywilson7699]

Thank you finally someone who actually showed the vaccumm line setup

[@jamesstephenson352]

Great truck. Hang on to it. I had one like it & sold it after 9 years, still kick my ass for it.

[@MrGarfield4]

VERY nice truck! I too have a 300 six in my 1995 F150, 4x2, 5 speed manual. It goes in tomorrow to stop the oil hemorrhaging... 100 miles per quart. I am getting too old to tackle the oil leaks. Oil pan gasket (botched up by previous owner), porous oil pan, leaking oil pressure sending unit, valve cover gasket, side cover gasket, possibly rear main seal. The PCV valve is functioning ok. The only seal that doesn’t leak is the front cover, and I’ll have them change it while things are apart. Very strong engine, even for 198k. I expect I’ll get another 100k or more out of it. It currently has 198k+ on the clock. I bought it over 12 years ago and it’s a southern truck. Very minimal sheet metal rust, super solid frame. I do not drive it when the roads are snowy or salty (I live in MA and it is not my daily driver). Your truck is a beauty. 👍

[@PhilHewkin]

My buddy had a '96, the last year of the 300 6. It had fuel injection and a 5 speed standard trans, he got 27 mpg hiway.

[@martentrudeau6948]

Great truck, very nice job on the engine upgrades, looks good. The inline six is a smooth running, bullet proof engine, it's a great engine.

[@jamesmooney5348]

Blessing, very much a blessing to get ahold of that truck.

[@flatheadfletch]

I have a 96 F150 short bed XL with 4.9 fuel injection and 5 speed Mazda trans. 260000 miles runs like a champ. Putting ZF-5 transmission in it next week. Yes it has small block bell housing. So stoked about this. Now just need a 78 F250 to swap everything over to !!!

[@chrish5096]

I’ve commented on this video a few times, but I just wanted to say thanks for the idea. I just got mine wrapped up and I put the same manifolds and carb on my 81, and it’s a totally different truck. Definitely no race car, but it really woke that little 300 up!

[@rumrivertriples4073]

Good to hear!

[@zachshipley1689]

Compared to the stock 1 barrel carb, do you still have to floor it just to make it up a hill?

[@rumrivertriples4073]

@@zachshipley1689 it's never really struggled to get up hills if it's unloaded. With a load it labors a little less to get up to highway speeds going up an on-ramp but as you can clearly see, she's no rocketship.

[@zachshipley1689]

@@rumrivertriples4073 Thats good then. I plan on swappin carbs as well

[@chrish5096]

Zach Shipley no. It runs so much better, smoother and noticeable power bump. I have no overdrive in my truck and on the highway with the old carb, it was really working hard to go even 60 mph. Now I look down and don’t even realize I’m doing 70 all the time. The motor really feels like it has a lot more breath. Going up hills and being under load, definetly doesn’t take as much throttle as before.

[@curlylarrymoe]

Beautiful truck!!! I love the ford 300 i6!

[@Nova.1971]

Very well done looks super clean, i'm putting the same carb on my 46,000 mile 250 six!!!!

[@bigdog5389]

I have 1986 with the 300 inline that I just rebuilt. Those motors do really well with an RV cam (LOW torque) with a 2b carb. Very nice truck tho and thx for sharing with us.

[@connected6782]

Glad to hear it. I'm doing a 68 and put an RV cam in it. Still in the build stage.

[@vernulrich2267]

I have pretty much the same set up in my 89 E150. I also upgraded to the HEI distributor. Great looking ride, drive on!

[@rumrivertriples4073]

Thanks Vern, you as well!

[@dennismadigan2023]

Nice build, clean and functional. Going to the drive video now.

[@andrewlloyd8922]

Thanks so much for this video. Looking at doing the same type of upgrade from a single barrel YFA on the inline 6.

[@yeboscrebo4451]

Nice! I have the same setup except I put an Edelbrock carb on mine. I changed to the newer AVS2 carb and it made quite a difference. The annular boosters gave me much crisper throttle response and torque off the line. I also put a Thompson Performance powerblast plate on it which made the last little remnants of a stutter disappear when i hit the throttle. I’m trying my best to get more fuel economy in preparation for a trip from CA to Arkansas. I’m planning on switching from ported to manifold vacuum advance to get more timing at cruise and running an HEI to get that low load cylinder charge ignited as much as possible. I’ve been able to get my ‘72 F350 flatbed from 9 mpg to 18 currently. Next I’ll fiddle a bit more with the timing and put an overdrive unit on it. Should be over 20 mpgs easy!

[@deadcarnahans1932]

Ported and Manifold are the same at cruise. I use manifold for some mysterious reason.

[@rubbersoul3723]

Never had a truck or Ford-of any kind-but dig the truck and video! Rock on!

[@rumrivertriples4073]

Thanks Marc, I appreciate that

[@wakjob961]

God, I love inline 6's.... beautiful truck my friend! Enjoy it.

[@rumrivertriples4073]

Thanks, appreciate it

[@steppydaddy972]

❤❤ Really nice

[@indy69541]

300 sixes are indestructable

[@zyenathalous]

unless you spin them too fast.

[@jamesmooney5348]

Love the 300 in lines.

[@davidalcaraz6003]

Great video nothing fancy just make it work better I like what you have done thanks for the information.

[@danweir2093]

I'm converting my 89 to carb. I had to clearance the type c intake to fit around the EFI exhaust manifold. I'm using a 450 Holley and a HEI distributor .

[@REVNUMANEWBERN]

Are you making a vidio??

[@Mr_PNW]

Very, VERY nicely done! I have a 79 F-100 with the 300 inline and auto. It was a CA truck and in 2004 my son and I dropped in a new long block. I removed most of the octopus that sat on top the engine at that time. I’m sick of these 1bbl YFA carbs failing every couple of years after sitting through our winters, WA state. I came here looking for a solution and really believe this is it. I’m going to reach out to you for a parts list if you don’t mind. I like a number of your upgrades.

[@rumrivertriples4073]

Thanks, feel free to send me a message, I'd be happy to share all that I recall from the swap

[@Mr_PNW]

@@rumrivertriples4073 Wow those offy manifolds are impossible to find and they keep moving the back in stock date further out. Have you heard anything on the Clifford Performance ones?

[@93jake81]

@@Mr_PNW i just got an offy dual plane intake for my 300 from summit a few days ago and it came in 2 days

[@connected6782]

Hey @Mr_PNW and @rumrivertriples4073 , I'm doing a full machine and rebuild on a 300 for a 67 f100 here in SW Washington (wet and cold winters). Putting the head back together today. My intention for build, OE look, and use is almost exactly what you have done so I am very grateful for your video. I already bought my Offy but I was having a hard time deciding on a carb. The Quick Fuel sounds perfect. I would love to talk parts with both of you guys. I have a stock exhaust manifold - don't really want the hassle of headers and I don't think it'll be worth it. How much of a difference will the EFI manifolds make? Your's sounds great - what muffler did you choose? Thanks so much for sharing.

[@jodypaul2695]

I think that QFT carb is a good choice. Nice.

[@americanfreedom6417]

Awesome truck and clean work.

[@Joseph-dq5wb]

Beautiful job dude

[@chadwhite7290]

Hp and tq numbers? I've had 3 f150 trucks. 1995.. 4.9 2006 4.2 2007 5.4 The 4.9 was by far the best

[@scottbrown321]

Great Video. Thanks!

[@mdnghtrdr79]

I put an efi head on my 86 carb 300. The brings the compression up to 9:1. Also, on mine anyway, I can’t run enough timing to make it ping. The carb head would ping readily. I have the timing set for max performance using an hei. I’d like to get the offy intake but they’re hard to come by and $700 at summit.

[@icebrakernh]

Looks great. Keep up the good work.

[@markreynolds3850]

Nice job,enjoyed your video.

[@rumrivertriples4073]

Thanks for the comment, glad you liked it!

[@deadcarnahans1932]

I mounted my carb completely different. The Lokar cable goes over the valve cover then turns back towards the firewall. The throttle plates center over the plenum better also.

[@rumrivertriples4073]

Is your intake a c-series or a dual port? C-series needs the carb mounted in this orientation.

[@deadcarnahans1932]

I have a dual port and also a Clifford intake. Both have carbs mounted as I describe. My carb adapter will install in either position. I am assuming that a dual bowl Holley on a C-series will hit the valve cover.

[@staggdegraaff1531]

Nice truck I have a 78 f150 Ranger xlt flare side 4x4 highboy with a 460 built up to a 514. Keep the old trucks going because the new ones are junk.

[@rumrivertriples4073]

Very nice! Want to trade engines? Ha

[@staggdegraaff1531]

@@rumrivertriples4073 you can build one you need a 1971 Lincoln block D1VE is the beginning of the block number. But when I go out to my garage I'll let you know what books to buy because it tells how to build one. I never built a engine in my life and I went by these books and it works great. But start looking for the that block first. There worth about$1000.00 dollars. But make sure it has the block number or it won't work.

[@rumrivertriples4073]

@@staggdegraaff1531 thanks Stagg, no worries though. I'm familiar with that engine family and already have a plan for how I'd build one, just a matter of not wanting to spend the money on the swap at the moment. Lots of other projects and the F250 is a great reliable cruiser at the moment

[@rumrivertriples4073]

@@Faber-cator why swap out the more economical I6? There really is compelling reason at this point beyond a desire for a more fun driving experience. Like I mentioned I've got enough projects to keep me busy so this will likely stay as-is for a long while.

[@justincarlson761]

I have an 84 ford bronco XLT I believe it's this engine definitely a inline 6 looks alot like trying to find parts new to work on cars got it as a project car any help is welcome!!! Beautiful truck btw

[@rumrivertriples4073]

If it's the original engine in that year Bronco it'd be the same basic engine. Lots of info out there on the inline 6 forums.

[@rosalinosantos2096]

WOW what sweet truck 👍

[@rosalinosantos2096]

I have1986 f150 shortbed with a inline 6, one day I will have my truck clean as yours!

[@charleshollingsworth1583]

Love your truck no chebby crap there.

[@rumrivertriples4073]

Thanks for the compliment. I do have to admit that I enjoy all the makes of trucks from that era including the GM's. Clean old Iron catches my eye no matter what

[@Reesetrain44]

did you know that inline 6 can make it past 480000mi in a 1982 econoline it has but right now is finally getting some well deserved TLC

[@rumrivertriples4073]

They certainly can last a long time but that is like ten lifetimes for this truck. Fair weather driver mainly.

[@zarkeh3013]

Electric Choke that's switched on with ignition switch? get an oil pressure switch that's normally open (no pressure) and wire that ignition source to it and then the choke. then choke activates only when engine is running. some OEM's used the alternator stator to power the choke though it is a lower voltage and electric choke needs to be made for it. anyway, small detail on a nice truck!

[@joesilvasr9733]

TURBO! Very nice truck!

[@rumrivertriples4073]

Thank you! I'll turbo it when my KZbin channel pays for it ha!

[@zarkeh3013]

Turbo is why I went EFI.... years ago and am still saving for the turbo :L

[@aaronbrandes7456]

I like that!

[@Stillayungin]

what is the part number for the lokar throttle cable and for the bracket

[@zachshipley1689]

I need to know as well

[@Derricksgaragetoys]

Hi. So the big question i have and did not see. Do you notice any performance increase after the intake/carb swap?

[@jackleonard8660]

Thanks. Nice work.

[@orinjackson6446]

Love the video

[@johnmuir7304]

Nice truck. 👍

[@haydentrapp326]

Did the full clifford kit on mine recently, comes with an offy intake as well. You were saying that you were able to set fuel air mixure screws to the right place with this carb? The 2bbl webber carb they sent works well, but even with my mixture screws set in all the way it still runs a little bit rich. Not sure what Id need to do for jetting to fix that, might just go with a new carb at some point.

[@WilliamMunny-d8s]

yeah its been mentioned already but this is a dual plane manifold isnt it? or does does offenhauser make 2 diifinline 6 intakes? if its the dual plane , you have your carb 90 degrees out of phase and are basically running 3 cylinders on the larger ports and 3 cylinders on the smaller ports Probly not ideal Your secondaries should both be feeding the larger ports and main 2 bbls feed the 2 smaller ports

[@zyenathalous]

no, this is the type "C" manifold. the carb orientation doesnt matter on this one. yes, offy makes 2 diff intakes for the i6

[@jasonhausenfluck1163]

I have a 65 f100 i put the head from 240 I6 RV cam 450 double Pumper with the long tube headers

[@emidiorossi]

Your primary carburator throttle are feading cylinder 1 to 3, secondary 4 to 6. I know that´s the only way you can place the carb over the manifold or 180 degrees around. I modified mine 90 degrees so primary are closer to the engine, just like Offenhauser clams to set up the carbs.

[@deadcarnahans1932]

I agree. Many videos show these carbs mounted incorrectly. Perhaps they are thinking about working on a V-8. Although I used a Holley 2 barrel, same concept. Throttles are inline with engine and centered over the plenum.

[@gprz843]

Beautiful setup my friend, what adapter or spacer did you use ?

[@BradleyDacel]

How did you move the transmission dipstick tube and put on the intake manifold

[@carlflowers1693]

great info,,,,thx

[@burtbunns2270]

Nice ford ...show quality .,

[@tentinytons8140]

What adapter did you use?

[@donsgamecorner6772]

beautiful

[@rumrivertriples4073]

Thank you

[@bryanmccauley7913]

Great vid. Do you know where 1978 ford f100 temperature sensor connector is located going into the firewall?

[@orlalara]

The ford 300 engine has the temp sender below the intake/exhaust manifolds, towards the back of the engine. It's a pita to get there if everything is assembled. You can see it from below the truck.

[@zyenathalous]

you may have found it by now, but for others wondering, it is located in the wiring loom on DS by brake booster/master

[@briancohen-doherty4392]

Nice 👍

[@chrish5096]

I’ve been interested in a setup like this for a while but now it’s a reality as my old carb is beginning to leak causing my motor not to start as well as the fact that it runs too rich and fouled plugs after only 2500 on my rebuild. Anyway that’s all beside the point. I am going to order and use the same parts, (intake, carb, exhaust manifold) as you did. I shouldn’t need any other items to complete this other then new manifold mounting hardware and gaskets, an air cleaner, and a spacer plate to go between the carb and intake correct? Also did you run into any complications with your installation? Awesome truck I hope to have a similar running engine soon!

[@thomaspodesta9297]

I love it! Where did you get the valve cover breather cap?

[@rumrivertriples4073]

Pretty sure it came from Summit. It was quite a while ago so I'd really have to dig for the part number though

[@FramebyOliver]

@@rumrivertriples4073 ever find the part number

[@rumrivertriples4073]

@@FramebyOliver unfortunately I did not find it in my order history but I can try again soon to find it.

[@sparta123z]

Hello, I love the build and your truck, very clean! I have a 1980 F-150 with the same engine that was given to me by my grandfather before he passed away. I want to keep it going but add a little power and help it run smoother. I'd like to chat with you about your setup and possibly ask where you got your parts so I can order them and start building this. Please let me know if this is something you'd be willing to share with me. Thank you :)

[@rumrivertriples4073]

You bet Ryan, if you're on IG look my up: @Rum_River_Triples Kick over a message, I'd be happy to help any way I can

[@REVNUMANEWBERN]

Been loking for same setup BUT with a EFI and AOD, would sure like to build such but would like to see others info

[@deadcarnahans1932]

I'm doing a 4R70W in my 77 carbureted. Has lower gear ratios and is tunable. I don't mess with AODs anymore. I think the AOD will bog the engine down because it shifts too soon.

[@Maples01]

Stay away from EFI unless you have deep pockets, the computers on them are trash, capacitors leak out and damage the boards, OBD1 is a mechanics nightmare, many electronic switches, rarely show failure with a code scan, so it becomes a replace parts till it runs right

[@Wayz5145]

@@Maples01 What about the ODD2 EIF on a 96 4.9. ? I just bought a 96 and plan on putting the motor in my 1955 F100 and use the EIF and engine wiring harness. Just desmog it.

[@Maples01]

@@Wayz5145 My friend bought a 96 E150 handicap equipped, he put over 400,000 miles on it, that is why I got this one. The 96 has the ignition mounted on a heat sink on the fender away from the distributor, but you can't change the fact the capacitors in the ECM are old and either will have failed, or be ready to, get them replaced, have a restriction plate made for the EGR, you don't want to remove it, just limit the gasses going through, throttle body gaskets are only good for 30,000 miles then they crack and get sucked in, either replace the injectors or have them sonic cleaned, and this engine uses the highest fuel pressure, its to combat vapor lock as the exhaust is by the intake, so it cycles the fuel quickly through the rails to keep it cool, 55PSI is normal, low pressure pump in the tank, collector on the rail followed by a high pressure pump. Remove the smog rail, the plug need be machine thread, not pipe thread, plug up the head, there are available heads without the smog holes, be sure to leak down test it first to look for burnt valve, or valve leaking, I'm still fighting to keep mine running in gear, no vacuum leak found, could be internal like a valve.

[@seanjenkins4665]

I couldn't hear the maker of the heat shield you said you used? Truck looks great by the way!

[@anthonyrood2064]

Raso enterprise

[@bryanmccauley7913]

Ty! I have.

[@shanedarden369]

I'm building one now..... IS THERE A ONE STOP SHOP... that carries all the inline 300 parts... ( I'm having a hell of a time😨) Got an 84 manual F150 step side..

[@rumrivertriples4073]

Summit racing has most of it but I've heard the Offy intakes have been on back order for a while. There are smaller parts that have to come from various specialty vendors like the heat plate (Raso) and some of the other do-dads

[@MrTobytasha]

beatifull

[@russiangrimmreaper88]

Actually need some help converting mine from efi to carb and ideas

[@ajjordan4460]

could you tell me where i can find the intake manifold you used here. Thanks AJ

[@drunkingsailor2359]

Nice,,,,very nice.

[@sorentay]

Thanks for the video XC. I'm doing this intake conversion right now on my '86 and wondering a couple things: 1. What size carb spacer did you use? 2. Do you have a link or part # for the throttle linkage set up you used? Thanks for your time.

[@rumrivertriples4073]

Soren, glad you liked it and found value in the video. I used a 1" thick 4-hole spacer from Summit as well as PN: DP-1000U for my Lokar throttle cable and bracket. Hope this helps. Thanks

[@sorentay]

@@rumrivertriples4073 Awesome! Thanks my friend. Best to you and yours.

[@chrish5096]

Could you tell me a little more about the heat plate to warm the manifold? From what I read online that is a concern when switching to this intake because the exhaust manifold doesn’t heat the intake. Thanks

[@rumrivertriples4073]

It is from RASO enterprises. It allows the coolant from the heater hoses to run against the bottom of the intake and warm it up more quickly/consistently. Seems to work well as the drivability seems better in those first few miles after cold startups

[@chrish5096]

Rum River Triples Gotcha. So basically just helps everything warm up a little quicker. I do greatly appreciate the response. I’m am planning on running an almost identical set up and am using your video as a sort of guide to try and wrap my head around where all of my hoses will be going and what gets shit canned. Thanks again.

[@glennredwine289]

Must be Minnesota or Wisconsin, cant do that in California, sadly.

[@rumrivertriples4073]

Did my accent give it away? Ironically, the truck runs cleaner and gets better mileage now than it did when it was completely stock.

[@glennredwine289]

@@rumrivertriples4073 Yes, the northern.midwest accent. I wonder how a 4.9L running on propane would do. They certainly run clean with no fouling of plugs. They run better with high compression pistons or head decking to raise the compression. Seeing the specs on the Honda GX NG Civic they had compression ratios of 12.5:1. Propane should work pretty well unless its gets SUPER, SUPER COLD liquefies @ -44°F. Natural gas isn't as available as propane. Hard to get a hold of out on the interstates. Fed gov't has a website about this stuff on fueleconomy.gov. alt fuels.

[@jannettesteverson3262]

I'm on the fence myself between 460 or dropping a 300 six I have all the bolt Ons what is your rear gear ratio ?? 4 on the floor non/overdrive? And what's your fuel economy? Mix? and hwy like 60 mph? Mine is a 79 f250 354 rear gear's w/460.

[@user-vq3dc2se5d]

If you do the 460, they aways run hotter in the summer and need a starter cover to keep your starter from heat, 10 mpg 4.9 may be a lot slower bet it pulls great for use 15 17 mpg and run forever

[@reddwarf60]

I'm curious as to why you used the C (Competition) series Offy intake, rather than the 6019-DP Dual Port Offy intake?

[@rumrivertriples4073]

Fair question. I spoke to several inline 6 enthusiasts who had a distaste for the DP manifold on anything beyond a stock rebuild that was mileage focused. I chose the "C" manifold so I'd have an improvement over stock when used as-is, but have room to grow if I ever decide to fully build the rest of the engine down the road.

[@tylercain9838]

did you ever have to change jets or powervalve?

[@junkerjorg]

I have the same setup in an 85 F-150 that someone cobbled together, sans the carb. I think Frankenstein put a 70’s marine Holley on the Offenhauser. Is your carb the QFT-SL-450-VS? I want to order one and see if it makes a difference on my set up.

[@connected6782]

Did you figure out which carb? I'm trying to order one for the same setup.

[@junkerjorg]

@@connected6782 yes, I did end up buying the SL-450-VS Quick Fuel carb from Summit. When I installed it I realized the carb had been sitting backward on the Dual Port Offy intake. The primaries need to face the valve cover on the 300 I6, which makes the throttle face the firewall. That posed another problem for me because I couldn’t get to the throttle cable to route right. The heater box was in the way. Ended up buying the Offy C-Series intake and everything lined out nicely. And man what difference! She’s straight butta now. I did have to adjust timing to get the right idle. But that’s because the guy had it way advanced!!

[@sorentay]

Oh yeah, one more question: Did you use a 4 hole or open spacer?

[@chrish5096]

Soren Tay yes I would like to know this aswell

[@dougtotten1767]

@@chrish5096 you can use either one on the single plane, but if you use a dual plane, it’s better to run the four hole ( just my opinion) BTW, I would recommend turning your carburetor perpendicular to the engine… especially if using a dual plane intake.

[@frankjgornickjr3676]

You never started it😮

[@tomholloway2701]

I'd install a Holly 400cc EFI carb kit with headers.

[@shaneslivka8813]

Beautiful pickup and a helpful video! I am going to try your set up in my 1968. I have a question unrelated to the video topic. I noticed your upper radiator hose enters the radiator on the passenger side. Does your lower radiator hose also hook to the radiator on the passenger side? Do you know your top and bottom radiator hose sizes? Sorry to be a bother, but I am struggling to find a decent radiator for my 1968 and I was thinking about shopping for 1979 components instead. I might share my email if you respond. Have a great day!

[@rumrivertriples4073]

Hey there, I don't have my truck near me right now, but it does have a passenger side lower radiator hose based on digging through some of my older photos. Unfortunately I don't have a good way to measure the hose sizes for you at this time.

[@connected6782]

I have a 67 that I'm building. Did you get your radiator figured out?

[@eighthof8]

Blue good, orange bad

[@davidlynch9245]

Do you happen to have the part numbers or links the the throttle cable extension and linkage you used?

[@rumrivertriples4073]

I posted in the comments of one of these videos. I can dig around and throw it in the description

[@rumrivertriples4073]

Looks like DP-1000U is the throttle cable and bracket I used from Lokar. The firewall bracket is factory.

[@thatguy3428]

Nice truck. How are you liking the single plane? I want to do this to my truck but read the dual port offy is better for stock RPM applications.

[@rumrivertriples4073]

I like it. The dual port would have very likely been better for me since the rest is still stock but I wanted room to grow in case I did a ported head/cam/turbo/etc. down the road

[@leonardgriffin8951]

I'm almost done with my 1994 4.9 conversion from EFI to carburetor. I have the same intake and carburetor but my question is what type of spacer did you use? I currently have a 1 inch with a 4 hole bore and it's not working.

[@deadcarnahans1932]

Why is it not working? Will not fit physically? Or engine will not run properly? I used four hole spacer under my 2V carb after cutting out the four holes and blending it well. Works fine.

[@leonardgriffin8951]

@@deadcarnahans1932 I'm not really sure, I pulled the 4 hole spacer and put an aluminum square bore spacer and it helped. It's a new carburetor but I think it's a bad one. The accelerator pump was leaking and I fixed that with a new diaphragm. It has an acculink tps mounted on the throttle linkage side with a 24 inch lokar cable that all seem to be working. I checked the fuel pressure as I'm stepping down from an EFI fuel pump. The regulator is set at 6.5 and has a return relieving the excess fuel back to the tank. Both bowl levels are about half way and now the vacuum secondary is leaking down the plunger shaft. I think I'm just going to return the quick fuel carb and get a Holley.

[@deadcarnahans1932]

@@leonardgriffin8951 Let me ask this. What transmission are you running? You mentioned the Acculink TPS. I have the same on mine for my 4R70W. I assume you have an aftermarket controller for your transmission.

[@JohnSmith-cf4gn]

Glad to hear it. I would change my 1990 6 cylinder to a carburetor if I could afford it so I have to deal with the BS and all the sensors and whatever. I wished I bought an older one.

[@BrandorT]

i have this same setup on my 84 f350 dually. its runnin like crap, tho.. idk if i have vac leaks or what.. in all fairness, its a pretty worn out motor

[@deadcarnahans1932]

I want to know why some prefer to mount carb North South vs East West. My throttle shaft is parallel to my crankshaft. Rus great.

[@BrandorT]

@@deadcarnahans1932 I believe the offy intake is a dual plane setup and the user must align the carb primaries with the intake primaries.. Sry for the shit explanation, maybe someone will clarify..

[@francocozzo7235]

Hey bud, What is that alternator? Is that the Autolite Louiville L8000 alternator?

[@rumrivertriples4073]

It's a 130 Amp 3G I took out of a Taurus. No idea on the model beyond that to be honest

[@josephtizol9695]

Love your truck. All the forums I’ve been on they seem to recommend the 390 cfm I’ve got a brand new Holley 2bbl 500 cfm I recently bought for my 390…yes I’m pulling a 390 for a 300…why did you choose the 450 over the 390?

[@andyurena9720]

Love your truck! I have a 79 F100 with the same motor. Did yours have a smog pump? Mine currently does but want to got to the Offenhauser setup and am not sure if I can delete it.

[@rumrivertriples4073]

Mine did have the smog air injection pump. You will have to check with your local regulations on whether it is required to retain the OEM emissions equipment to stay in compliance.

[@andyurena9720]

I actually checked out the local laws and I do not have to have the truck smog tested. With that said, what exactly needs to be removed and do I need to cap or run anything different once it is removed?.

[@jerrychacon8814]

My 78,300ci F-150 did not pass visual inspection,smog guy said the egr valve is missing.it never had one when I got the truck,it's federal and manufactured in canada.how can I prove it to the smog guy?

[@rumrivertriples4073]

@@jerrychacon8814 hard saying. Luckily we aren't subject to smog checks where I am.

[@jerrychacon8814]

@@rumrivertriples4073 I did find out were it says if your truck has an EGR or not, on my federal 1978 F series and most trucks there's an emissions sticker on the valve cover, I didn't notice it before as part of the top of the decal was missing,and dirty.mine only says engine:300ci . If you do have an EGR it will specify EGR. Also if your smog guy has older smog test manuels as one smog guy showed me theres no EGR test for my federal f150.

[@jerrychacon8814]

Any issues with smoging it?

[@bigvic1121]

How about a vid of it running?

[@rumrivertriples4073]

I'll try getting a video next time I drive it

[@willwalker5594]

Does it get any better mileage with the new carburetor and intake.

[@rumrivertriples4073]

@@willwalker5594 I have not done a good mileage check yet, but I suspect it will be better than before. It was pig rich before and never "right".

[@duckguide4109]

Link to the headlight upgrade?

[@rumrivertriples4073]

Ask and ye shall receive: www.ebay.com/itm/1978-1979-Ford-F100-F250-F350-LED-Headlight-Kit-/174587133657?_trksid=p2349624.m46890.l49292

[@ebinmaine]

@@rumrivertriples4073 that link didn't work for me. Is there another? Btw... Beautiful truck!

[@philleese9499]

I WANT TO BUY IT

[@michaelatkins9780]

2 barrel carbs need to be installed perpendicular to the engine, otherwise you don't spread the fuel on both sides of the offy plenum on idle and as a result 3 cylinders get more or less fuel. That was probably your issue. 4yrs later you probably know that now. Lol

[@michaelatkins9780]

Left out on idling stumbles.

[@Alwaysbusy300]

kzbin.info/www/bejne/fGTaY6VmZcRnqac some example for you guys follow this way and have a monster 6 cup if you guys need more info on this, just get back on ,this one Chevy opala from brazil that have 6 cylinder engine straight and some mod like 300 ford like just some modifications, balanced, crank,310/320 camshaft, muffler, and just say the original engine was, carb, know have 3x2 fuel injectors and fuel control fueltech, sound amazing the head just get a bit mod porting and big valve just on intake not exoust, mod old and new see if you like ,this one

[@troykelso]

6:53 *snicker*

[@oh_crisis]

Will it pass smog ?

[@rumrivertriples4073]

Thankfully my state does not require smog testing at this time - although with that said it runs FAR cleaner now than when it had the miles of vacuum lines and original 1bbl carb. It used to smoke and run terribly rich. It is far better in that regard now