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MechMan

MechMan

Apprentice
Sep 13, 2018
60
3
8
Long Island NY
#1
I am currently planning on a LS swap into a 83-88 Monte Carlo SS. This project has some time before it is started but I want to do my homwork and get a budget in place. I think I have decided on a LQ4, L92 heads, & a LS3 intake. I was curious was there any advantage to get a LQ9 over the LQ4 and if I can get the motor complete is there anything that i can reuse to cut costs? Obviously I am looking to do fuel injection so I know I will need a wiring harness and PCM.
 
Northernregal

Northernregal

Master Mechanic
Oct 24, 2017
342
609
93
Red Deer AB
#2
I am doing about the same build, the only advantage to the LQ9 would be the flat top pistons for about a half a point more compression, otherwise they are identical.

You can reuse almost everything, except the rockers on the 317 heads, the intake, fuel rails (I think, not totally sure), and the throttle body. There are people reusing the TTY head bolts and gaskets for boosted applications so if you are N/A you should be gold. Torque to 55 ft/lbs seems to be the magic number for the TTY head bolts, but your mileage may vary. Lots of info and youtube knowledge out there if you put in the time to watch like a days worth of sloppy mechanics channel. I prefer sunday when I don't have to wear pants.
 
MechMan

MechMan

Apprentice
Sep 13, 2018
60
3
8
Long Island NY
#3
I am planning on putting on L92 heads and a LS3 intake manifold.
 
Northernregal

Northernregal

Master Mechanic
Oct 24, 2017
342
609
93
Red Deer AB
#4
I am planning on putting on L92 heads and a LS3 intake manifold.
I’m doing L92 heads with the truck manifold. It’s a very potent setup either way, big flow numbers. If my parts order shows up the build will be in my build thread in the next 2 or 3 weeks.
 
MechMan

MechMan

Apprentice
Sep 13, 2018
60
3
8
Long Island NY
#5
Awesome! I look forward to reading it.
 
C

clean8485

Royal Smart Person
Dec 18, 2005
2,246
366
83
Ontario, Canada
#6
I'm not knocking this site at all, because there are good people and good info here, but there is a site called ls1tech.com, and there is alot of information to be found there.
 
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