h3 ls1 swap finally completed!!

[rocketgti]

Its been almost a year since I last posted about this nightmare crazy dream I wanted to make happen and I can say finally shes back on the road this week. I'm planning to do a build thread now that shes done and I finally have a life back outside of the garage. I have hundreds of photos to go over and notes to comb through...so be on the look out here soon. The low down basics 2007 base h3 with a freshened ls1 6.0 salvage drop out decked 799 corvette heads corvette cam trailblazer ss ecm & pcm programing harness and mounts from current performance and a whole lot of alpha parts....my budget goal was 4-5k (ha!) took more like 8k all said in done (it was not so much the amount endlessly flowing freely out the pocket book but the fact of telling the wife i need more is what hurt most)...the only things drop out engines will drop into nice and easy into is money pits...engine was in and out 4 times, tranny was in and out 5 times and I still got a few details I want to work out. Was it worth it? hell yes!! I can't wait to get it down to the track to see what the 1/4 mile time looks like. Been itching for the right ass to pull up next to me at a stop light to lite up. here's the teaser photo wanted to post a video but I'm having trouble holding the phone... W.O.T. requires two hands on the wheel and a lot of attention...more to come!

 

[rsc]

Alright, man! Congratulations! :thumbs:

 

[woodwardsh3]

Great job

 

[derian06]

Congratulations!! Interested to see the build thread

 

[06 H3]

Awesome!

 

[06 H3]

Welcome to the DIY v8 swapped club

 

[3Hummers]

Can't wait to follow your thread.

 

[amrg]

Congrats!

 

[Pappibri]

Looks good sitting in there. Can't wait to see your run

 

[citiboy]

Awesome build!

 

[CaseyS]

Welcome to the swap world. Getting the engine mounted is barely a quarter of the work. The detail work is what takes time and figuring out how to make it work. Same goes with the engine. That's barely half the cost. All the little parts, hardware, clamps, hoses, fluids is what adds to the pocket book. Every day is something new to order!

 

[SedonaBound]

Sounds like it evolved into quite a project. I've been wondering when someone would drop a 'vette engine into an H3 and I'm eager to see you add details to the thread.

 

[Synthetickiller]

This is awesome. Congrats on sticking with it & knocking out this awesome upgrade.
Please update with your 1/4 mile time & the power out put if you can get it on a dyno.

 

[amrg]

0-60 would be great! How much power does ur engine have on paper?

 

[rollerlocked]

Sweet giblets another swap beat me to the punch...

Can you tell me if this is the correct orientation and positioning for the current performance mounts?

I was wondering if you are suppose to use the bracket on the driver side?

 

[mantracker]

Thanks, in advance for the engine swap details. It takes a lot of time to post it.

 

[e0308jr]

Congratulations

Sent from my DROID X2 using Tapatalk 2

 

[rocketgti]

that looks right...leave em loose on the block because you will need to trim the tabs and push/pull it around some...i was able to get mine in with the truck intake and not have to wack away at the firewall...if I remember correctly both sides of the motor mounts on both sides of the truck had to be trimmed.

 

[rocketgti]

say rollerlocked the ls truck manifolds will not work in the hummer you will need to get the hummer h3 alphas ones and the heatshields are no longer available so wrap them up...I have a supplier I found for the flanges the alphas are different and no one has gaskets or flanges.

 

[rocketgti]

0-60 comes on fast...hell, 110 comes on fast...will try and get out to the track next week and find out exactly...as far as power numbers guessing around 375-400. I'm pretty sure that GMs rating on the stock 6L was like 345 and the trailblazer ss was 365. so in theory I'm running a tuned ss.

 

[rollerlocked]

Thanks for the info, I was told my engine was an LH8 out of a 2008 hummer and it came with the stock exhaust manifolds , so those are suppose to be out of a hummer h3 , do the manifolds look wrong to you?

 

[rocketgti]

never mind yea it looks to be from a h3...the manifold flange on the drivers side is the giveaway....sorry for the scare...i didn't use that bracket or any part of the factory bracket. bolted the CP mounts directly to the block.

 

[rocketgti]

Heres a short list of stuff one would need to get to do this…I got all my notes and stuff so this list is not complete but just wanted to give an idea in case you wanna run it by the ole lady to see if shes gonna kick your ass first ( I personally took consistent harsh painfully brutal beatings for some time now over this).
2006 Trailblazer SS parts : ecm, pcm, tcm, accelerator pedal, throttle body, O2 sensors, maf, knock sensors
2009 alpha parts: exhaust manifolds, accessory bracket, power steering pump& pulley & lines, a/c lines, transmission cooler lines, transmission bell housing, oil pan, transmission input shaft, transmission bolts, coolant hoses, s- belt
Other stuff: current performance harness mounts and programing, torque converter, transmission dip stick, electric fan , throttle body adaptor plate, intake plumbing and air filter
Worth notating make friends with the following: a guy who has a lift, knows GM transmissions and a really good exhaust guy. I’m lucky, my best bud is mr goodwrench.