LTX and LSX Putting LT1s, LS1s, and their variants into Third Gens is becoming more popular. This board is for those who are doing and have done the swaps so they can discuss all of their technical aspects including repairs, swap info, and performance upgrades.

truck block users

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Old Jul 15, 2009 | 06:30 PM
  #1  
BlueZee28's Avatar
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From: O'Fallon, MO
Car: 1991 Z28 convertible built 3/1/1990
Engine: Cammed 6.0L LSX
Transmission: T56
Axle/Gears: custom Ford 8.8", 4.10 gears
truck block users

I know that in order to use the truck coils and an fbody intake manifold, you have to bend the fuel rails slightly to clear the coil packs. But what about using an aftermarket set of rails like Pro. Products and the truck coils?
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Old Jul 15, 2009 | 06:44 PM
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Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
I moved the coil down on the bracket and out of the way.
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Old Jul 16, 2009 | 02:35 AM
  #3  
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Car: 91 Red Z28 G92 Spohn Suspn
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Re: truck block users

Originally Posted by BlueZee28
I know that in order to use the truck coils and an fbody intake manifold, you have to bend the fuel rails slightly to clear the coil packs. But what about using an aftermarket set of rails like Pro. Products and the truck coils?

Actually im gonna be using a truck intake manifold, just going to mod the hood to clear it.
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Old Jul 16, 2009 | 08:09 AM
  #4  
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From: 39.84N 105.11W
Car: '89 Trans Am GTA
Engine: WAS 350 - now L92 (alum. 378/6.2L)
Transmission: WAS 700R4, now a built T56
Axle/Gears: 3.27 9-bolt
Re: truck block users

I'm relocating the coils... (Sorry, I know that's not much help...)
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Old Jul 16, 2009 | 02:18 PM
  #5  
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From: O'Fallon, MO
Car: 1991 Z28 convertible built 3/1/1990
Engine: Cammed 6.0L LSX
Transmission: T56
Axle/Gears: custom Ford 8.8", 4.10 gears
Re: truck block users

Can you show me some pictures of how to relocate the coils? Did you have to drill new holes for the bolts?
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Old Jul 16, 2009 | 02:27 PM
  #6  
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From: Ontario, Canada
Car: 1991 Trans Am GTA
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Re: truck block users

I just bent my stock LS1 fuel rail like you said. Also, don't forget to use truck plug wires with truck coils! I was a dumb dumb and bought some used LS1 fbody wires and they are too short! Good thing they were only 10 bucks
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Old Jul 16, 2009 | 11:00 PM
  #7  
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From: 39.84N 105.11W
Car: '89 Trans Am GTA
Engine: WAS 350 - now L92 (alum. 378/6.2L)
Transmission: WAS 700R4, now a built T56
Axle/Gears: 3.27 9-bolt
Re: truck block users

Originally Posted by BlueZee28
Can you show me some pictures of how to relocate the coils? Did you have to drill new holes for the bolts?
Well... I don't have any pictures, but (AFAICT) there are only three things that you need to keep track of when doing that:


1) Making sure that your plug wires reach from the coil to the plug (which is determined by where you mount the coils & how long the plug wires are);

2) Making sure that the control wires reach to the coils (lengthening wires is pretty straightforward, & you can either remove the modular connectors altogether, work the originals into your design, or buy replacements);

3) Physically mounting the coils. If you set each coil on it's side, rather than laying it down flat, it's pretty easy to stick a properly-sized bar through each mounting hole so that they're all aligned in a row - and, if you use a properly-sized bar of "all-thread" through each mounting hole, then you can place locking nuts at intervals along that threaded rod so that the coils have room between 'em (good heat dissipation/less concentration of heat with them spread apart) and so that the coils are placed where the plug wires will reach their respective spark plugs... (That's how I figure it anyway, & I'm gonna give it a try...)

Now - depending on how it's done, this may not be the "prettiest" way to do it, but since I was already thinking of bending up a piece of sheet aluminum on each side of the engine to deflect exhaust heat away from the coils anyway (I have a small sheetmetal brake), it's not any kind of stretch to extend it a couple more inches & mostly just cover them up to a large extent. (Although if someone wanted to, I'm sure that you could make it look really sharp too...)

And best of all, it's not one of those things that requires you to spend $150 to do!
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Old Jul 17, 2009 | 10:07 AM
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Re: truck block users

You can also extend the coil harness to whereve you need it to go, and either buy long wires, or make custom wires with a wire kit.

Its more work, and more money, than what rumble was describing, but if it gets things where you want them, its worth it. Ive given thought to this, but couldnt come up with a good place to hide the coils. 4th gen guys usually tuck them under the cowl. I thought about mounting them behind the dash...but that would be easier with the motor out which hopefully wont happen any time soon. haha.

J.
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