#8 coil touching firewall - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Ipafrank · 02-18-2020, 08:46 AM

5.3 installed in my 66. Everything fitting great, went to install coils on right side and #8 coil is tight to firewall. Can't bolt up or get wire on. Anyone else run into this issue? Looking for a fix,don't want to adjust firewall. Drivers side fits perfect.

bigmoe · 02-18-2020, 10:06 AM

Are your motor mount adapter plates adjustable? Mine had 4 positions and I had to use the 3rd position away from the firewall to clear the passenger side coil. I still had to remove the last mounting stud. Mine is a Gen IV 5.3.

prodjay10 · 02-18-2020, 11:09 AM

Just got to make the motor go forward. I had this and pretty much did what bigmoe did.

Or you can buy some custom coil brackets.

**nsb29** · 02-18-2020, 11:35 AM

I don’t have a picture of mine right now I had the same problem remove the last mounting stud but still didn’t have quite enough room so I shortened the bracket between 7 and 8 I already had the motor mounted and the driveshaft installed

Ipafrank · 02-18-2020, 12:25 PM

Sounds like a good idea with the bracket mod.My perches are in the rear holes. Have DD plates and am in the 4 th hole closest the firewall. Motor is as far forward as I can get it. Wasnt impressed when I seen coil touch. Trans and shifter all bolted up.

**nsb29** · 02-18-2020, 03:30 PM

Yeah that’s how I felt with the driveshaft and everything all in and ready to go but I intentionally set my motor back as far and as low as possible Not thinking about the coil’s

**derotoreut** · 02-18-2020, 09:28 PM

I installed a 5.3L LM7 in my '70 K10. Definitely tight to the firewall. I didn't want to slide everything forward because it would've affected front and rear driveshafts (besides being a PITA). First I removed the rear mounting coil stud. Then I decided to change my coil brackets totally. Went with ICT Billet coil mounts. Not that it made a big difference, but I think it helped some.

**dayj1** · 02-18-2020, 10:58 PM

Quote:

Originally Posted by Ipafrank

5.3 installed in my 66. Everything fitting great, went to install coils on right side and #8 coil is tight to firewall. Can't bolt up or get wire on. Anyone else run into this issue? Looking for a fix,don't want to adjust firewall. Drivers side fits perfect.

Here’s some brackets that I ran across a while back if you’re looking for a bolt on solution. http://www.brphotrods.com/products/E...cal/index.html

02-18-2020, 08:46 AM	#1
Ipafrank Registered User Join Date: Jun 2019 Location: Niagara Falls, Ontario,Ca. Posts: 9	#8 coil touching firewall 5.3 installed in my 66. Everything fitting great, went to install coils on right side and #8 coil is tight to firewall. Can't bolt up or get wire on. Anyone else run into this issue? Looking for a fix,don't want to adjust firewall. Drivers side fits perfect.

02-18-2020, 10:06 AM	#2
bigmoe Registered User Join Date: Oct 2014 Location: Brandon, Manitoba, Canada Posts: 995	Re: #8 coil touching firewall Are your motor mount adapter plates adjustable? Mine had 4 positions and I had to use the 3rd position away from the firewall to clear the passenger side coil. I still had to remove the last mounting stud. Mine is a Gen IV 5.3. Attached Images

02-18-2020, 11:09 AM	#3
prodjay10 Registered User Join Date: Jun 2016 Location: Phoenix AZ Posts: 429	Re: #8 coil touching firewall Just got to make the motor go forward. I had this and pretty much did what bigmoe did. Or you can buy some custom coil brackets.

02-18-2020, 11:35 AM	#4
nsb29 Senior Member Join Date: Feb 2014 Location: new smyrna beach fl / 29 palms cal Posts: 1,727	Re: #8 coil touching firewall I don’t have a picture of mine right now I had the same problem remove the last mounting stud but still didn’t have quite enough room so I shortened the bracket between 7 and 8 I already had the motor mounted and the driveshaft installed __________________ Hand made A/C vent manifolds for 64-66 trucks adapts any aftermarket A/C to OEM vent

02-18-2020, 12:25 PM	#5
Ipafrank Registered User Join Date: Jun 2019 Location: Niagara Falls, Ontario,Ca. Posts: 9	Re: #8 coil touching firewall Sounds like a good idea with the bracket mod.My perches are in the rear holes. Have DD plates and am in the 4 th hole closest the firewall. Motor is as far forward as I can get it. Wasnt impressed when I seen coil touch. Trans and shifter all bolted up.

02-18-2020, 03:30 PM	#6
nsb29 Senior Member Join Date: Feb 2014 Location: new smyrna beach fl / 29 palms cal Posts: 1,727	Re: #8 coil touching firewall Yeah that’s how I felt with the driveshaft and everything all in and ready to go but I intentionally set my motor back as far and as low as possible Not thinking about the coil’s __________________ Hand made A/C vent manifolds for 64-66 trucks adapts any aftermarket A/C to OEM vent

02-18-2020, 09:28 PM	#7
derotoreut Roto Reuter thats the name... Join Date: Feb 2010 Location: Darien, NY Posts: 1,853	Re: #8 coil touching firewall I installed a 5.3L LM7 in my '70 K10. Definitely tight to the firewall. I didn't want to slide everything forward because it would've affected front and rear driveshafts (besides being a PITA). First I removed the rear mounting coil stud. Then I decided to change my coil brackets totally. Went with ICT Billet coil mounts. Not that it made a big difference, but I think it helped some. Attached Images __________________ ~ Dan My 70 K10 SWB build:http://67-72chevytrucks.com/vboard/s...d.php?t=782232 My 71 SWB build:http://67-72chevytrucks.com/vboard/s...d.php?t=651394 1970 SWB Fleet K10 4X4, 5.3L LM7, 4L60E, Dakota Digital RTX, Vintage Air, Ididit tilt 1971 SWB Fleet C10 - Original SWB Arizona truck, new custom restoration project "Kick out your motor and drive while you're still alive - kick it out!" - Heart 1977



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