Mounting EFI and Ignition ECU's in engine bay

[crash340]

Team, due to limited space under my dash in my Cuda, I want to mount both ECU's in the engine bay. My current intention is the relocate the battery to the trunk and mount the ignition on the inner fender where the battery used to be, right in front of it in the header panel is a hole so air will flow into the engine bay around it. I then want to mount the EFI ECU up on the firewall where the original Ignition used to be. Now there are many who say, too hot, too wet etc. first of all I don't wash my engine down or drive the car in heavy or even moderate rain so water ingress won't be an issue, as for heat, I drove the car for a good hour yesterday in 90 deg temps, I pulled up and hit those locations with a heat gun to check temps in those locations, the battery was 132 deg and the OEM ignition box was 128 deg.
Do you guys think that is too hot for the ECU's??

[dodj]

I don't know the spec automotive ign's are built to, but 128* would be considered excessive for industrial PLC's/electronics. Cooler would be better.
Is there a reason you don't want to put them in the trunk/boot?

[GoodysGotaCuda]

There is plenty of room inside the car, if you look in the right places. 

[cudabob496]

heat shortens life of electrical components.
maybe there is a temp spec for your ECU from the manufacturer.
also, you could put some type of heat shield device, or insulation, on it?

[JoeGrapes]

I have the Edelbrock E Street EFI and I mounted all the electronics inside the glove box attached to the top wall. There still is plenty of room in the glove box for stuff and I can get at any of them if I need to. I ran all the wires thru a rubber grommet on the firewall. Unless you really look carefully you can hardly tell that it's not a carb.

[dodj]

There is plenty of room inside the car, if you look in the right places. 

Will the kick panel fit over that Goody? Or do have to trim a little?

[GoodysGotaCuda]

Will the kick panel fit over that Goody? Or do have to trim a little?

It will lightly curve the kickpanel out toward the carpet. I just have to dock the corner for the wiring to get by. It should be unnoticeable.

[1 Wild R/T]

Theres also space next to the parking brake..

[crash340]

There is plenty of room inside the car, if you look in the right places. 

Goody, you have vintage air to start with and how are you going to mount the OEM kick panel? I have factory items that intend on staying factory fit inside the car

[crash340]

Theres also space next to the parking brake..

Wild, no room there on my car there is an airbox there, non AC car.

[crash340]

Glove box is an option for one of the two items, drilling a 2 inch hole through the firewall is not big on my list of things to do due to me trying to minimize holes cutting mods to the body that are not easily reversed as teh car is a numbers matching original car ( all of the dealer paperwork, window stickers etc, yes, Im putting a 408 in it, it now has a D60 in it however, if I one day need to sell it, I will have all the original drive train for it and it can be easily put back to OEM specs, that means its worth more)
So, Im trying very hard to avoid cutting holes in firewalls, kick panels and so on, mounting in the trunk is an option but not highly recommended by the ECU makers

[dodj]

mounting in the trunk is an option but not highly recommended by the ECU makers

Wonder why. Electronic signal wise, a ten foot run of cable makes no difference.
How about mounting the ecu up where the battery was? Probably cooler than the firewall?

[crash340]

Dodj,

I was going to mount the FAST ignition ECU where the battery is and the EFI ECU up in the same location as the old ignition box on the firewall, yeah, I asked the FAST techs both on line and at SEMA about mounting in the trunk, they didnt say no but they said find a place to mount it closer to the engine

[dodj]

I asked the FAST techs both on line and at SEMA about mounting in the trunk, they didnt say no but they said find a place to mount it closer to the engine

I would follow their advice. they know their equipment better than me!
I would put it in front of the engine rather than behind though.
 

[shawge]

There is plenty of room inside the car, if you look in the right places. 

  That's where I put a ms3pro, relays, and fuses.

Under the seats - front or rear - is another option.