Experiences swapping an FE in an early bronco

[Dylancahill55]

Ok, I made it here. I read through the thread real fast. It seems there are some poo poo ers. I can say that my rig is amazing and a ball to drive. I have never had overheating problems, just running electric fans. It is big and heavy, but my rig handled that plus heavy bumper and winch just fine. I will try to help. Getting ready to go to a rigs and coffee.

What did you run for headers and exhaust?

 

[Broncobowsher]

So as of now the engine specs are std bore 406 ci
C6aer heads with factory adjustable rockers
Comp 270s solid lifter cam. I like the 282s but I think it’s alittle much. I drove an f100 that had it in a 427 and it was great but in a 4x4 just alittle more torque in the bottom will be good. F427 intake Shooting for right around 9.5-1 compression to keep it pretty pump gas friendly. I’m going to make headers for it not sure if they’ll be chassis style or fender wells yet. Np435,205 trans and t case. I’ve got the twin stick setup with a gear banger shifter for the 4 speed.

Those heads are going to be really small for a 400+ engine. They were small heads when on an under 300 cubic inch engine.

 

[Dylancahill55]

Those heads are going to be really small for a 400+ engine. They were small heads when on an under 300 cubic inch engine.

C6aer heads are a poor man’s 428 cj head. They’re gonna be ported with big valves as well

 

[bmc69]

Those heads are going to be really small for a 400+ engine. They were small heads when on an under 300 cubic inch engine.

??? Those are my favorite FE head to build with, short of having some 427 heads. I think you've confused those with another casting.

I've got some well-built C6AE-R heads on the 428 2x4V engine that's going in one of my boats. Roughly 500HP..give or take a few.

 

[bmc69]

So as of now the engine specs are std bore 406 ci
C6aer heads with factory adjustable rockers
Comp 270s solid lifter cam. I like the 282s but I think it’s alittle much. I drove an f100 that had it in a 427 and it was great but in a 4x4 just alittle more torque in the bottom will be good. F427 intake Shooting for right around 9.5-1 compression to keep it pretty pump gas friendly. I’m going to make headers for it not sure if they’ll be chassis style or fender wells yet. Np435,205 trans and t case. I’ve got the twin stick setup with a gear banger shifter for the 4 speed.

F427 intake eh?. I've got one those sitting on a 352-4V PI engine for the time being. Not sure if its going to stay there...

 

[Dylancahill55]

F427 intake eh?. I've got one those sitting on a 352-4V PI engine for the time being. Not sure if its going to stay there...

I got it for helping a buddy fix his car awhile ago. Otherwise I’d probably buy a performer rpm or even the dual quad

 

[Broncobowsher]

Sorry, not well versed in the FE, had small block on my head.
Any small block head from '66 will choke on big cubes. That was what I was thinking.

 

[Timmy390]

I've got a set of C8ae-h 14 bolt heads. Nothing special but I got a set

Tim

 

[Robertkrafts]

That's what I was running in my '69 trail rig. It worked out very well....routine breakage excepted...

 

[73azbronco]

Sometimes the hardest and most expensive way of doing something starts with already having the wrong part to start with, even if "free"

as in, the most expensive car I ever bought was a cheap BMW.

 

[bmc69]

as in, the most expensive car I ever bought was a cheap BMW.

My most expensive car bought cheaply was an Audi 100LS. Shew...ate me alive trying to save that thing from the junkyard end it so richly deserved.