Bobby G

iTrader: (13)

I am doing a LQ4 swap in a 1980 Trans am and I am picking up parts for it and I was told that the fuel line on a ls6 intake will hit the truck coils. Can anyone who has done this swap verify this is true or not? thanx

gofastwclass

iTrader: (2)

It's true but there are several options... Move the coils, use an aftermarket fuel rail, tweak the factory fuel rail, etc. You're doing a custom install so you will have to get creative in areas.

garys 68

iTrader: (1)

I've put LS1 intakes on LQ engines. You'll need to bend the fuel line about 1/4". The steam vent tube will need to be bent too. The water pump outlet will also hit the TB.

c6matt

iTrader: (1)

a 08+ truck or a stock LS1 f car waterpump will fix that

Bobby G

iTrader: (13)

I have the f body water pump

Isolde

iTrader: (4)

I've successfuly tweaked the LS1 fuel rails to clear the truck coils. It's not a big deal.

Bobby G

iTrader: (13)

woulds ls2 coils work without modifying the fuel rail

01cherryreds10

iTrader: (9)

If you are using a returnless rail setup the truck coils won't clear, the LS1 coils do though.

Bobby G

iTrader: (13)

Are the ls2 coils the same as trucks, can anyone send a pic of there modified fuel rail to rguadagn@rochester.rr.com, thanx

Fahrenschnell

iTrader: (1)

Ok.....I just did this an hour ago.....truck coils fit fine.....just take a box wrench and bend the fuel line inlet toward the rear of the motor until you have clearance.....Took me 30 seconds to do....

bend slowly and gently and it will be fine.

Seth

Bobby G

iTrader: (13)

thanx, ill try it, any way you can send a couple of pics so I can see it?

Isolde

iTrader: (4)

I'm sure I can get you a pic tomorrow. I don't recall what year my rails are from, but they are from an F-car. I think I have both styles of truck coils. If so, I can do a pic of each.

Bobby G

iTrader: (13)

That would be great

Isolde

iTrader: (4)

These first 4 pics are the triangle coils I had when I did the bending.

Isolde

iTrader: (4)

Since it can point to either side, I flipped it around, and found it makes no difference. Neither did swapping coil packs from side to side. To me, a pack is 4 coils plus the bracket. I tried to be thorough for ya:


With the block sitting where it is, this side made it easier for me to get a closer pic:

Note the 3 tiny kinks, from using the 13 mm box-end wrench in 3 places. This is better than just 2 sharper kinks.

Isolde

iTrader: (4)

Now switching from triangle coils to round coils, the bending would need to be slightly upward, or else modify the bracket. The difference is less the coils themselves, more the different brackets. These brackets seem to move the coils upward and inward.



Note that I got my coils and brackets as assemblies, as GM put them together. I never removed any coil from any bracket, of what's shown above. My triangle coils came with my '01 LM7, no idea whether pickup or Suburban or what, 2wd or 4wd, et cetera.
My round coils came with my '01 LQ4, again, no idea what it was installed in.

Bobby G

iTrader: (13)

Wow great information thanx now no worries