So I'm looking at building a street truck at some point and I want to run something different than everyone else's v8.

I have been reading around on turbo builds for the 300 and its got my creative juices flowing.

So my thought for a turbo 300 6 is pretty simple. Kinda pricey but simple in my mind at least. Everything I have read its straight forward to get a turbo mounted to the engine, I was looking at either the 6.5l Chevy diesel or maybe a t3/t4 hy35 turbo running into an intercooler. And air flow ratio, boost, and egt gauge to monitor it all.

It's seems the tuning and getting everything to run in perfect unison that's the pig of it. After reading all these really cool builds that people have done with efi and ended up fighting the electronics the whole way because of the limitations of the stock system and the megasquirt (most common one I have read people using). All eventually getting it to work but after a lot of time tuning.

So my original idea to get around that was go away from efi with a blow-thru carb easy and simple correction. But, now I'm stuck tuning a carb to try and match the boost correctly and I'm not a carb wiz so tuning would be fairly time consuming and difficult for me.

This is where my mind branched into something even more different. Run a turbo into a Holley Avenger EFI 550-400 conversion kit (That's the pricey part lol)

The Holley system is designed to support 200-400hp, it's self tuning (even for boost and NOS). It will optimize air fuel ratios on the fly in real time all the time come with all the necessary upgraded parts to convert and is designed to operate in the exact power ranges that a turbo 300 would.

Here's my quandary though, it can't be that simple. I'm looking for someone to shoot holes in my idea and sound board with me so that I can perfect it or scrap it if it's not possible.

 

It's entirely possible but what your gonna want to do is run forged internals with dished pistons to compensate for the boost

You could slap a turbo on it as is and it'll run but for how long is the question something WILL let loose

The amount of dish on the pistons depends on allot of factors ie thickness of head gaskets, how many ccs your heads are it's allot of work but can be done with time

I'm in the same boat as you so many people run the same thing either big blocks or built small blocks and some with superchargers

I went with a twin turbo 5.0 for my 90 f150

 

 

That motor looks SICK!!

Yeah I was gonna shoot for 8.5ish compression ratio. From what I read that's what the best would be. And I was looking at running hypereutectic pistons

 

Hypereutectic pistons are not suitable for a forced induction engine. Forged or reap the whirlwind later.
All cast pistons are brittle and will not take abuse, pressure and detonation like a forged piston.

 

Reason I was going with them was because to my knowledge no one makes a forged piston for the 300. I could be wrong, I would like to be wrong. I would rather run forged pistons.

 

Have you guys read about the stock 4.9 with an industrial sized turbo in the Maverick?

10 second car btw... Spent $5k on the entire car.

http://www.hotrod.com/cars/featured/ccrp-1108-1971-ford-maverick/

 

I believe if you talk to a few piston manufactures you might be able to get some custom made pistons (and be forged).
Of course that would be a bit on the pricey side but I am almost sure the whole build is going to be a little pricey.
Trav

 

Any piston company will make whatever you need.

 

Flatlander Racing has a kit with forged pistons. about halfway down on this page.
https://www.flatlanderracing.com/hpkits-ford.html

 

is there any other issue that I might be missing that would inhibit this setup from working?

 

Tuning is gonna be the critical part.

 

Love it! Best description of a 300 I've ever heard..."at WOT it sounds like a UPS truck on acid."

 

Not sure if you realize this but that EFI system only works on 4 barrel carb intakes. Not sure if the older 300s got 4 barrels.
Other then that I can't personally think of anything.
Trav

 

yeah I know it runs on a 4 barrel platform. which leads me to think of a new question.

I know the 2 heads are different EFI compared to the Carb. That being said does a 4 barrel intake mate up fine with the EFI head? I know like on the 460's the intake ports are different. Does the 300 have any issues like that, dont think they do but dont know or sure.