Re: lq4 6.0 swap into '85 Crew Cab Shorrbed
 

Did the exhaust manifolds have 2 or 3 bolts at the collectors? What type of gasked does it use?

Re: lq4 6.0 swap into '85 Crew Cab Shorrbed
 

These manifolds only had 2 bolt flanges. As for the gaskets, i have a dirt track racing friend that had a machine shop convert him to using Blue RTV for exhaust gaskets. I was pretty skeptical the first time i heard this. But they've used it on multiple setups in their stock car and haven't had a leak one. In the past year i've used it on my '06 and this swap and haven't had a leak either....therefore i'm a believer now. No fabricated gaskets, just Blue RTV, equivilant or better for my exhaust gaskets from now on.

Re: lq4 6.0 swap into '85 Crew Cab Shorrbed
 

very cool build. i shoulda went this route from the start.

Re: lq4 6.0 swap into '85 Crew Cab Shorrbed
 

Hey man great build. I am doing an lq9 in my 89 crew cab now. I was wondering what you did about your temp sending unit to your gauge not working right together and what kind of vss you used?
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Re: lq4 6.0 swap into '85 Crew Cab Shorrbed
 

@ Duramax40:
To be honest, it was trial and error before i found the right combo with the temp sender to gauge. I went to a junk yard and got a bunch of different sensors and gauges. You'll notice some gauges go to 240 and others go to 260. At one point i had a sensor that was over ranging my 240 gauge, so i swapped the gauge to a 260, and its pretty close now. As for the VSS, i used a Dakota Digital VSS. There was an accident there though before i got it right. The piece of square stock they send you to drive the sensor and cable was too long for my setup, so when i tightened it down, it split the sensor completely in half. The sensor should be touching the fitting on your transfer case with no gaps before you wrench it down with the nut. If there's a gap, cut the stock shorter.

Re: lq4 6.0 swap into '85 Crew Cab Shorrbed
 

so by the research i have done supposedly you dont have to buy the adapter that goes between motor and old skool tranny...is that right with using the lq4/lq9? Also what type of fuel system did you use? Part numbers would be excellent. Im about to do my crew cab dually and Im thinking about leaving my 400 in it but the mileage issue your having might have me look for a 4l80.

Re: lq4 6.0 swap into '85 Crew Cab Shorrbed
 

Great build friend. Sent you a pm as well. I have an '84 C10 with a 6.0\TH350 combo and the only thing stopping me from firing it up...is fuel...or fuel lines to be exact.

Re: lq4 6.0 swap into '85 Crew Cab Shorrbed
 

i love my jimmy, but if i found a ccsb for 3k that jimmy would be sent down the road!

Re: lq4 6.0 swap into '85 Crew Cab Shorrbed
 

Its been quite a while since i've done any update on here of where Big Blue is at. It has successfully ran great for 3 years despite how hard i drive it. Last year i took on the challenge to learn how to rebuild a 4l80 and how to use HPtuners. I have successfully rebuilt a 4l80 for a friend and am currently building one with a custom gear set (2.9 1st) for Blue. Also, i recently purchased a turbo kit that will be implemented into Blue. So as these 2 new projects come along, i'll start posting some pics back on here.

Re: lq4 6.0 swap into '85 Crew Cab Shorrbed
 

Nice swap, will be a blast with the turbo. Those 6.0s love boost!

Re: lq4 6.0 swap into '85 Crew Cab Shorrbed
 

Hehe there aren't too many LS motors that DON'T love boost. That being said, yes the ~9.4 comp makes for nice boosting. Even the higher compression configurations are remarkably resilient to abuse. (10.5ish for the LS2 iirc)

Re: lq4 6.0 swap into '85 Crew Cab Shorrbed
 

Any updates/pics of your past year with blue? Love it btw!:metal:

Re: lq4 6.0 swap into '85 Crew Cab Shorrbed
 

I'm guessing your talking about the VSS? If you are, do you need a VSS or can you run it without it On an old trans? I'm running a t5 and am wondering.

Re: lq4 6.0 swap into '85 Crew Cab Shorrbed
 

i'm guessing that he's talking about the .40" spacer that goes between the crank and flexplate. And the answer is no, because the lq4's come with them. There's a good chance the lq9's have the dished flex like the 5.3's since they were generally bolted to the 4l65/70 which had different spacing than the 4l80 which kept it's same spacing since 1991. So with an lq9, you'd probably have to find the .40" spacer and Flat flexplate. I have the part numbers for those if you need them.

Re: lq4 6.0 swap into '85 Crew Cab Shorrbed
 

Haven't had too much time to work on Blue. She stayed the same pretty much through hunting season and has been parked on the side of the garage since. I've done 1 other swap on an '87 Army truck, and am in the process of putting a cam'd 6.0 in a '96 K1500 for a friend. I did however buy some Hummer gray Leather/power seats for her though. They'll be going in just as soon as the '96 is done. I also have the 4l80 i rebuilt with Hi-po clutches and the custom 2.97 1st gearset ready to go in her too.
Been just way busy with everybody else's projects and tuning, tuning, tuning. On another note, my '06 ended up putting down 503HP at the wheels on the dyno after getting the turbo in and dialing her in. I've since re-tuned one other crappily-tuned turbo'd silverado and a freshly installed e-force supercharged c-6 vette.

Re: lq4 6.0 swap into '85 Crew Cab Shorrbed
 

Beast mode