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Engine Swap Everything about swapping an engine into your Third Gen.....be it V6, V8, LTX/LSX, crate engine, etc. Pictures, questions, answers, and work logs.

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Old 05-14-2009, 09:46 PM   #1
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Join Date: Jun 2004
Location: Chicago south suburbs
Posts: 454
Car: 1988 IROC-Z28
Engine: L98(383tpi) modified
Transmission: 700R4 rebuilt
Axle/Gears: 3:73 10bolt rebuilt

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Whats the best way to install?

Hey guys,
I'm going to be dropping my engine, and trans in this weekend. I always done the installs in the past separate/one at a time. But a couple of people told its easier to install both at the same time. What are your opinions, suggestions, tips, etc? My engine is already on a stand, trans is on a dolly/cart. My engine hoist has a adjuster bar to tilt up or down.
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Old 05-14-2009, 09:49 PM   #2
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Location: Endicott, NY
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Car: '86 IROC-Z
Engine: 420HP ZZ4 350
Transmission: TH350
Axle/Gears: 4:11's

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Re: Whats the best way to install?

i have always put the tranny on the engine before hand, then put them in the car together. i find that way easier my self.
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Last edited by *86EYEROK*; 05-14-2009 at 09:52 PM.
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Old 05-14-2009, 09:55 PM   #3
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Join Date: Jun 2004
Location: Chicago south suburbs
Posts: 454
Car: 1988 IROC-Z28
Engine: L98(383tpi) modified
Transmission: 700R4 rebuilt
Axle/Gears: 3:73 10bolt rebuilt

Classifieds Rating: (6)
Re: Whats the best way to install?

Do I need to elevate the front end so the end of trans does not hit floor, as its alot longer attached engine/trans?
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Old 05-14-2009, 10:02 PM   #4
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Car: '86 IROC-Z
Engine: 420HP ZZ4 350
Transmission: TH350
Axle/Gears: 4:11's

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Re: Whats the best way to install?

when i did mine...i had the car up on 4 jack stands so the tail of the tranny wouldent hit the floor and so i could hook everything up under the car after it was in. im pretty sure the tranny would hit the floor if the car is not jacked up.
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Old 05-14-2009, 10:19 PM   #5
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Join Date: Jun 2004
Location: Chicago south suburbs
Posts: 454
Car: 1988 IROC-Z28
Engine: L98(383tpi) modified
Transmission: 700R4 rebuilt
Axle/Gears: 3:73 10bolt rebuilt

Classifieds Rating: (6)
Re: Whats the best way to install?

Ok!
Is this a one man job or do I need a helper?
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Old 05-14-2009, 10:27 PM   #6
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Car: '86 IROC-Z
Engine: 420HP ZZ4 350
Transmission: TH350
Axle/Gears: 4:11's

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Re: Whats the best way to install?

i always had my ol man help me..it can be a pain in the azz by yourself trying to get it in yes..the hardest part by yourself is getting the motor lined up with the motor mounts. remember there is alot of weight there.
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Old 05-14-2009, 10:34 PM   #7
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Car: '87 IROCZ
Engine: 395 ZZ4
Transmission: ProBuilt 700R4
Axle/Gears: 9 bolt 3.70s

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Re: Whats the best way to install?

I have done it both ways; I think that bolting the tranny to the engine first, then installing them as a pair is easier in the long run. I have had problems getting the tranny up into the tunnel and on to the pins and then getting the first tranny/engine bolt in.

One tip is to put a hydraulic jack on the floor under the car. When installing the engine/tranny, guide the back end of the tranny onto this jack. The jack must be sitting fore and aft direction. From this point on, the back of the tranny will rest on the jack. You can adjust the heigth of the back of the tranny to help install the whole package.
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Old 05-14-2009, 10:41 PM   #8
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Join Date: Jun 2004
Location: Chicago south suburbs
Posts: 454
Car: 1988 IROC-Z28
Engine: L98(383tpi) modified
Transmission: 700R4 rebuilt
Axle/Gears: 3:73 10bolt rebuilt

Classifieds Rating: (6)
Re: Whats the best way to install?

ok,
is there any concern with weight issue since there is only 6 bolts holding the trans/engine together minus the pins. Like could they seperate, the cowl crack etc?
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Old 05-14-2009, 11:25 PM   #9
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Re: Whats the best way to install?

the torque your engine creates probably puts more stress on those bolts than the weight of the tranny ever could. I pull and install them in one piece whenever possible. I'm afraid this time I'm going to have to go two piece though... can't use jack stands, or a jack to roll under the tranny. UNFORTUNATELY the ONLY place I have to do the install is on a brick patio, with spaces between the bricks :[ so I'm going to have to go ghetto style, and roll the car instead of the engine hoist. talk about a BEOTCH!!!
anyway, if you can get it off the ground so the tail shaft will clear, go with doc's suggestion on the floor jack, you'll be a LOT happier than if you tried to install the engine and tranny seperately
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Old 05-14-2009, 11:29 PM   #10
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Join Date: Jun 2004
Location: Chicago south suburbs
Posts: 454
Car: 1988 IROC-Z28
Engine: L98(383tpi) modified
Transmission: 700R4 rebuilt
Axle/Gears: 3:73 10bolt rebuilt

Classifieds Rating: (6)
Re: Whats the best way to install?

Great thanks for all the info. everyone.
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Old 05-15-2009, 08:39 AM   #11
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Join Date: Nov 2005
Location: Maryland
Posts: 235
Car: 1987 IROC-Z
Engine: 5.7 TPI
Transmission: 700-R4
Axle/Gears: 2.73

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Re: Whats the best way to install?

Quote:
Originally Posted by poomwah View Post
the torque your engine creates probably puts more stress on those bolts than the weight of the tranny ever could. I pull and install them in one piece whenever possible. I'm afraid this time I'm going to have to go two piece though... can't use jack stands, or a jack to roll under the tranny. UNFORTUNATELY the ONLY place I have to do the install is on a brick patio, with spaces between the bricks :[ so I'm going to have to go ghetto style, and roll the car instead of the engine hoist. talk about a BEOTCH!!!
anyway, if you can get it off the ground so the tail shaft will clear, go with doc's suggestion on the floor jack, you'll be a LOT happier than if you tried to install the engine and tranny seperately
Why don't you make it easy on yourself and lay down a couple sheets of plywood board?
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Old 05-15-2009, 09:56 AM   #12
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Re: Whats the best way to install?

I've been thinking of that.... I wonder how thick it would have to be
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Old 05-20-2009, 07:16 PM   #13
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Join Date: Aug 2008
Location: Langley,BC,Canada
Posts: 26
Car: 1987 chevrolet camaro Iroc-z
Engine: 383 tpi
Transmission: built 700r4
Axle/Gears: posi 3:45

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Re: Whats the best way to install?

1/2 " is fine over a somewhat solid underlayment
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Old 05-20-2009, 07:37 PM   #14
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Re: Whats the best way to install?

that sounds easy enough... now I just have to get the plywood AND the hoist :P LOL
I thought of just getting a cheap chain hoist from harbor freight and attaching it to my wifes gazebo :P
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Old 05-20-2009, 07:37 PM
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