Welp, my truck has made it to the older trucks/classics tab, and it's getting to me. I love my truck and drivetrain(m5od is very meh). I plan to 4x4 swap it sometime soon with a ZF5.
My question is, is there a combination of parts on the top end that I can plug and play to give 'er(300 I6EFI) some more juice?(Eg: Cam, Springs, Injectors, Rockers) I'm looking for a solution that won't require aftermarket ECU or flashing the stock computer(Which I don't think is even possible).
Like a combination of injectors that flow just enough to support aftermarket parts to give me some more hrsprs. Check engine light is perma-On from emissions delete, so that doesn't bother me. I just don't want to be dumping excessive fuel with mustang injectors or something.

 

Fordsix.com one member spec'd out a cam a bit bigger than stock that works with OE speed density. Pmuller I believe is his handle. You might be able to tune with EEC Tuner or Tweecer. Quarterhorse is now gone.

Stock camshaft not bad with some Scorpion rockers. That is what I have done and Comp 903 springs. Pretty similar to the other one, just its off seat duration is larger.

Stock EFI manifolds are basically shorty headers and long tube gains 7-9ftlb only...not worth the hassle. High flow muffler and cat always help.

The head can use a good valve job and porting. Lots of tech data over there on where and how to port it.

Do not fear the gear. Decide what you want tire size and consider that before much else.

 

Have you read through Inline Six 200, 250, 4.9L/300 forum and did not see anything? The engine computer is set up expecting to see the stock injector size. There is no reason for the check engine light to be on. All you had to do was leave the solenoids plugged into the harness and put a block off plate between the EGR valve.

 

Sorry, I was hammered. Had trouble navigating to the engine specific forum. But hey, now I know about Fordsix.com, so it worked out. Thanks again, Hitman.
Hindsight, yeah. I left all of my solenoids plugged in, but I can't uncut my EGR pipe. Eventually I might get an EGR delete plug, but meh.

 

Don’t waste your time. The computer needs to “see” movement from the EGR valve. Those things don’t work.

 

it was fairly easy to boost up my last truck - an 81 300 incher, but EFI hmmm...all the answers are about to be carb based

there IS a cam from ISKY, and there IS a head from ford - the uber rare 240 inch head which boosts compression and will be the ONLY thing to do that outside of making new pistons.

you have what 17lb injectors, going to 19 and futzing the ECM to get more flow is about it, otherwise you need a 6 cyl maf invention.

someone did recast the 300 head and port it, but I dont think it gave a compression bump.

 

Back your timing off 4 degrees, run 91 octane and put a 75 wet shot of nitrous on it. Done and no tuning needed.

 

https://fordsix.com/threads/promaxx-...ailable.81945/

That would be Promaxx. Don't know why but it isn't listed on their site. Phone order only.

Flows something like 60CFM over stock and has 74cc chambers. Compared to an EFI head it'll drop compression by a half point I think.

 

You could go crazy like Nick did....

Nick's Crazy Superturbocharged 300 Inline 6

Whitman sampler:

 

I don't think both a super AND turbo are necessary on a tractor engine, but damn is it cool!
I just sent in my first oil sample. Unknown miles on the engine, but it has to be under 200K. Oil is only on the tip of the dipstick by the time an oil change is due, and I don't see leaks or excessive exhaust smoke.

If it turns out the engine's get up and go has got up and left, I wouldn't mind rebuilding it to handle some boost. That one they had on Engine Masters that they pumped 13.5psi through was very wicked. I just like the sound of the straight 6, and can't afford to cummins swap.

 

Make it a turbo setup, and either use a standalone efi setup or a blow through carb.......both are abundant for these old fords and is the only thing i'd consider doing for more power.

 

Yeah, the cost of the Offenhauser intake and a blow-through carb will cost the same as a Megasquirt setup, I wanted to avoid it, but I guess I will read.. and learn. Ugh. But it's going to be worth it. The hard part is building the engine right. And that's only slightly out of my "Eh, good enough." wheelhouse.
I think it will be fun welding and adapting piping to make it it work, as long as the engine can handle it. I'll drop doubloons on air/fuel, Pyro, and a boost gauge.