Stroker EFI Build for 1995 F350 Towing Application

Stroker EFI Build for 1995 F350 Towing Application

I need a new project and after doing some research I’m intrigued by the idea of a stroked EFI engine.

I really like the results from the engine that Scotty built

http://www.460ford.com/forum/showthread.php?p=1403114

I would like something similar for my F350 so please give me your thoughts and/or ideas.

I have 2 blocks to choose from (I’d really like to remove the stock 460 from my F350 and keep it intact). I have a DOVE-A block and a D1VE-A2B block. Most likely will be bored .030 over.

Thoughts are to use a 4.3” crank with 6.8 rods along with dished pistons to acquire a static compression ratio of 9-1 or 9.5-1 I would prefer to run 87 octane but not ruling out 89 or 93 octane.

Ported fuelie heads and intake (Saw somewhere where one can use a fuelie intake with earlier heads?) I have some D2VE heads that are still bolted onto the D1VE-A2B 460 engine. DOVE heads with a fuelie intake? Wish I hadn’t sold my DOVE heads…

Corresponding Speed Density friendly custom cam and 30# injectors. I need to purchase the injectors from ??? I already have an adjustable billet fuel pressure regulator that’s been in the top of my tool box for many years.

I already have some BIG sewer pipe exhaust however I do need to get some shorty or mid length headers and then connect them to the sewer pipe.


The ultimate goal is not to make a lot of Horse Power but to make a stupid amount of torque.

What say you????

I'd do a 545 4.5 stroke and keep the EFI heads and intake.

Keep the compression down to 9:1 and get a nice hydraulic roller ground up.

Upgrade the injectors and get the computer redone.

Dave,

Appreciate the input.  My tow truck engine would be larger than my race car engine

What size injectors would I need for a 545? 36# or 42#? Who could burn a chip for my 'puter?

What about that 521 combo Lem built a few years ago for a guy's tow truck?  Made good numbers but I don't remember what heads he used...

Any sense in upgrading to MAF while you're at it?

Their are some calculators for sizing injector out their and I'll look and see if I can find an old contact of Mine to get the computer reworked.

John,

Link?   Was it carb or EFI?

Could convert to MAF but I'm not real familiar with the process or tuning.

Found it

https://www.429-460.com/t21825-521-pump-gas-engine

Looks to be a SCJ headed carb engine. Nice build but not applicable.

Thanks

dfree383 wrote:Their are some calculators for sizing injector out their and I'll look and see if I can find an old contact of Mine to get the computer reworked.

Thanks Dave,

I'm still in planning/contemplating mode so no big hurry.


After doing some more research, seems that the stock fuel pump(s) may have trouble at a certain power level? Since I have 2 tanks, I would need larger pumps?

Would it be possible to install one large pump where the fuel lines run together?

Damon, here's the 502 Lem built for a F350. Badass for 9.25 compression. I'm going to do something similar to this for my Econoline but maybe use FAST EFI.

https://www.429-460.com/t2925-502-f350-engine

Expected Hp Level= Inj size in pounds per hour X number of cylinders X .5 x .9

.5 is BSFC of a NA engines.
.9 is maximum duty cycle of injector

(40 X 8 / .5) x .9 = 640 x .9 = 576 HP

Too small and you can run too lean.

Too large and you will have idle troubles.

You better do more thin kin g...
What ECM do you intend to use...? One that has a transmission control with all the drive train inputs, I hope.
This kind of modification would be a lot easier to accomplish if you could find an entire California version of MAF for the 460 trucks and just get a matching Air Flow Meter for the injectors size you intend to use.
It would then be a pretty straight forward thing and tuning will not become a big issue.

Pro-m makes a engine management system for fuel injection. A mass air system, lap top programable. They have a video on there web site, looks like a good system.

Randy,

I'd like to keep the truck ECM as is however it is speed density so that would be a limiting factor. I have the E4OD transmission as well.

Wow that Pro-M stuff is expen$ive!


Holy moly, the 502 that Lem built for a customer is damn impressive! If only I could get those kind of numbers for my F350 with EFI...

At the HP levels you are considering the factory fuel rails and regulator should be fine. If you try to use a billet regulator then you will have to make custom fuel rail as none are available off the shelf. Factory injectors were laid back at an angle not straight up like most.

Fuel system wise I would upgrade the fuel pump and fuel filters.

Remember now that most fuel is E10 and you may have some crap buildup from that unless you have been using the rare pure gas LOL.

Source of injectors: No need to get fancy here. I heard there was a Ford guy in Ky that sells Ford Racing Parts. A set of injectors from them will be just perfect.

Sent you a PM with some more thoughts.