Lq4 built and started!......somethings not right
01-31-2020, 07:02 AM
#102
TECH Junkie
Join Date: Jun 2014
Location: At the dump with a clutch
Posts: 3,135
Received 781 Likes
on
571 Posts
My cam specs are 218/222 on a 110+3 .587/.578 nothing major.
LY6 rods and pistons.
NNBS intake manifold
8.1l injectors
ls3 throttle body
pac racing springs
trunnion rocker upgrade
milled heads .030
comp cam push rods
shorty headers
How much horsepower you think this motor will make?
2600-2800 stall converter
4l80e
Ah man that sucks but nothing on these trucks is really hard to work on especially if you have already messed with everything at least once.
LY6 rods and pistons.
NNBS intake manifold
8.1l injectors
ls3 throttle body
pac racing springs
trunnion rocker upgrade
milled heads .030
comp cam push rods
shorty headers
How much horsepower you think this motor will make?
2600-2800 stall converter
4l80e
Ah man that sucks but nothing on these trucks is really hard to work on especially if you have already messed with everything at least once.
Not sure what It will make but my Tahoe is had a little smaller cam and similar bolt ons. Its snappy and has a ton of torque. Should get those big tires moving well.
01-31-2020, 08:00 AM
#104
Launching!
Thread Starter
It did smack the head a couple times. That was the one with the bad rod bearing. Pictures are somewhere in this thread. Installer error.
got a new rod installed on that piston and waiting on new crankshaft now.
got a new rod installed on that piston and waiting on new crankshaft now.
01-31-2020, 10:36 AM
#106
long as you take your time, dont have any distractions (ball game on tv, kids wanting something, wife sending you out) you will be fine
make a sheet showing each step then check it off as you go to the next step, use a marker or paint pen to mark fasteners as you torque them. keeping track of whats torqued is very important! make sure things are lined up and you dont force things in place with a hammer (some times a light tap with a rubber mallet is needed on main caps) just make sure bearings are seated properly before you tap anything
these engine are not really hard to assembly dont be in a rush keep track of torqued fasteners, have a quality torque wrench, use a bunch of assembly lube and check clearances on all the main and rod bearings. dont over think it
id take a good look at that piston make sure the top didnt bend or any thing check the top ring gap make sure its not tight
make a sheet showing each step then check it off as you go to the next step, use a marker or paint pen to mark fasteners as you torque them. keeping track of whats torqued is very important! make sure things are lined up and you dont force things in place with a hammer (some times a light tap with a rubber mallet is needed on main caps) just make sure bearings are seated properly before you tap anything
these engine are not really hard to assembly dont be in a rush keep track of torqued fasteners, have a quality torque wrench, use a bunch of assembly lube and check clearances on all the main and rod bearings. dont over think it
id take a good look at that piston make sure the top didnt bend or any thing check the top ring gap make sure its not tight
The following users liked this post:
Nick99Chevy (01-31-2020)
01-31-2020, 12:20 PM
#107
Launching!
Thread Starter
All great advice there! Also buy a good engine stand. I suggest the 2,000lb one at harbor freight. I used the 1,000 and it is part of the reason this happened to me. Its a long story but the 1k stand is scary and I didn't want to rotate the motor unless I absolutely had to.
I checked it. Thankfully everything is good. I dont think it hurt it because the rod was so damn loose lol
long as you take your time, dont have any distractions (ball game on tv, kids wanting something, wife sending you out) you will be fine
make a sheet showing each step then check it off as you go to the next step, use a marker or paint pen to mark fasteners as you torque them. keeping track of whats torqued is very important! make sure things are lined up and you dont force things in place with a hammer (some times a light tap with a rubber mallet is needed on main caps) just make sure bearings are seated properly before you tap anything
these engine are not really hard to assembly dont be in a rush keep track of torqued fasteners, have a quality torque wrench, use a bunch of assembly lube and check clearances on all the main and rod bearings. dont over think it
id take a good look at that piston make sure the top didnt bend or any thing check the top ring gap make sure its not tight
make a sheet showing each step then check it off as you go to the next step, use a marker or paint pen to mark fasteners as you torque them. keeping track of whats torqued is very important! make sure things are lined up and you dont force things in place with a hammer (some times a light tap with a rubber mallet is needed on main caps) just make sure bearings are seated properly before you tap anything
these engine are not really hard to assembly dont be in a rush keep track of torqued fasteners, have a quality torque wrench, use a bunch of assembly lube and check clearances on all the main and rod bearings. dont over think it
id take a good look at that piston make sure the top didnt bend or any thing check the top ring gap make sure its not tight
01-31-2020, 12:23 PM
#108
TECH Enthusiast
I used a 750lb engine stand for my 4.8l and it did the job just fine. You just really had to grab ahold of the block when you were rotating it over. These motors are much heavier then what I’m used to lol.
01-31-2020, 01:24 PM
#110
Launching!
Thread Starter
