Conversions & Swaps LSX Engines in Non-LSX Vehicles
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89 iroc 5.3 swap

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Old May 5, 2011 | 08:50 PM
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Default 89 iroc 5.3 swap

gettin' work done!









on the way back to my shop










jack making racecar noises




homemade harmonic balancer installation tool


we got some more work done. you can see here i have my intake/fuel rails, ect mocked up for some pictures and clearance checking











exhaust is builted











back on the ground




Last edited by thirdgenbum; May 5, 2011 at 09:54 PM.
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Old May 5, 2011 | 09:35 PM
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congrats, looks real nice. lucky to find a third gen so rust free. is the 5.3 stock?
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Old May 5, 2011 | 09:47 PM
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the 5.3 is stock. it has a set of 317 heads on it that someone put on it along the way. we honestly don't even know if it runs. but i checked out the bottom end and it looks basically good. no weird debris hanging out or anything. the price was right though, so we picked it up.

most all the thirdgens in GA are rust free like this
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Old May 5, 2011 | 09:50 PM
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Originally Posted by thirdgenbum

most all the thirdgens in GA are rust free like this
chicago is not so forgiving...
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Old May 6, 2011 | 04:39 PM
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Hey what paint are you using for this application, on the heads and covers that is. thanks
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Old May 6, 2011 | 04:56 PM
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Originally Posted by thirdgenbum
the 5.3 is stock. it has a set of 317 heads on it that someone put on it along the way.
Are you going to run some boost on it? If not you might benefit from running some stock heads to get the compression back up...
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Old May 6, 2011 | 08:51 PM
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no boost. i realize the scr is down with the larger chambers of the 317's. it's what we got, and this is only to set the car up. he's planning on going to a larger engine later, so this isn't the end result. once the car is up and running, we'll look at doing an iron 5.7, or a 6.0 or something with some better heads alltogether.

thanks for the concern though
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Old May 6, 2011 | 08:52 PM
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Originally Posted by heviwate
Hey what paint are you using for this application, on the heads and covers that is. thanks
dupont engine paint, be sure to clear over the silver...otherwise it'll make a mess
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Old May 7, 2011 | 10:55 AM
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Default 5.3 swap

Nice ride . I installed a 5.3 in a 57 belair . I have two wires on the harness I don't know where they go . One is marked SES and the other is marked TCC . Can you help please . Henry
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Old May 7, 2011 | 12:34 PM
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ses goes to the service engine soon light. the tcc probably needs a switched ground source or something for the torque converter clutch. this would be probably from the brake light switch or cruise control cancelation switch on the brake, which would tell the torque converter clutch to disengage if you hit the brakes thus allowing you to decelerate without stalling the engine.

what kinda harness are you running?
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Old May 12, 2011 | 11:33 AM
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pulled the engine out this morning to get some more stuff done. notched the k-member for ample oil pan clearance. i was going to just grind it a bit, but decided it'd be better to notch it. tomorrow we'll be laying the wiring in the engine bay. get the fuel system stuff all done early next week and maybe fire it up soon after that





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Old May 12, 2011 | 11:45 AM
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Good job
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Old May 12, 2011 | 12:15 PM
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That is some nice work there. I just picked up a free rust free '87 that I don't know what to do with but you are giving me some ideas .
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Old May 13, 2011 | 05:52 PM
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got a decent amount done today. got the engine/trans reinstalled, and got the wiring harness installed. this harness was from my car when i had efi so it was pretty much already modded. i had to mod his engine bay harness, but that only took about 20 mins or so. exhaust is back on, and we put the battery in and have power in the car again for the first time in nearly 2 years. we're at a stand still till we get some more stuff for the fuel system in. not too bad for a days work though.

here's a picture of the wiring and stuff. we'll make it cleaner as we go

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Old May 13, 2011 | 08:01 PM
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Why did you have to notch the k member? It looked like it fit?
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Old May 13, 2011 | 08:29 PM
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piece of mind. also helps servicing transmission if need to be. it was way too close for comfort in my opinion. and coming from a guy that's already had one of these pans shatter...i don't want anything near that pan if it doesn't need to be.
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Old May 17, 2011 | 07:03 PM
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well we got a little closer today. the wiring is mostly in and done. i just need to run a signal wire to the MIL and a brake switch for the TCC and the wiring should be done. it's a bit of a mess still, so i still gotta loom it all back up. we did determine that the fuel pump has gone bad over the last year and a half of sitting. hopefully the gas hasn't gone bad too. jack said he put sta-bil in it, we'll see, lol. we also put together a list of stuff that needs to be purchased or addressed still. it's pretty extensive unfortunately. jack has run out of funds at the moment so we're at a stopping point till he can get some money up. such is hotrodding though!

here's some pics as it takes a break till more funds hit:




the car now has no ac and the 5.3, where it used to have ac and a tpi 305...sits up real high in the front now.



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Old May 17, 2011 | 09:55 PM
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I loooooove those cars. GOOD LUCK!!!
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Old Jul 8, 2011 | 12:50 AM
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ok, we got a little more work done over the last two days. the fuel lines are now run. the fuel pump ended up not being bad, just disconnected, lol. the CAI is loosely mounted where it will be. we got the relay block hard mounted where it will be. the transmission has been serviced, and the cooler is in. the exhaust is all back on, hopefully for the last time. tomorrow jack is supposed to pick up hoses, plugs, wires, etc. we should be ready to fire it up this weekend!

here's a couple shots from this evening:








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Old Jul 8, 2011 | 05:52 AM
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Looks good. I always loved the dark red IROCs. Why did you ditch the AC though?
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