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Topic: How to remove a C3 Engine?

in Forum: C3 Engines

How to remove a C3 Engine?

Posted: 3/3/10 5:29am Message 1 of 25
Former Member
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Joined: 3/3/2010
Posts: 94
Vette(s): 1968 convertible

Hello, I am new here – just googled and found you all.

 

Last week I purchased my first corvette, a 1968 convertible in need of a little attention.  The car is beautiful and of course came with it’s fair share of issues – all of which I have addressed except the convertible top linkage and the engine. 

 

This is not a numbers matching car and it has a 350.  I want to remove this engine and replace it with a period correct engine.  I am a DIY guy, but I have never pulled an engine before.  Does anyone have a step-by-step type of post here for removing an engine on a C3 ?   




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How to remove a C3 Engine?

Posted: 3/3/10 8:33am Message 2 of 25
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Mounds View, MN - USA
Joined: 5/24/2007
Posts: 1031
Vette(s): 70 LT1 coupe, 69 350 HP coupe, 69 390HP 427 coupe, 71 LS5 convert, 85 coupe, 93 coupe
There are probably several websites with correct details, but I will give you my version.
Disconnect battery.  Then disconnect all electrical:  Ignition wire, starter wires, alternator, A/C if so equipped, temp sender.
Disconnect oil pressure gauge tube.
Disconnect throttle linkage.
Disconnect fuel line from frame to fuel pump, and return line if so equipped.
Drain coolant and remove hoses, both radiator and heater.
If air conditioned, unbolt compressor and tie up out of the way.
If auto trans, disconnect kick down linkage, and unclip coolant lines from side of oil pan.
Remove flywheel cover from bottom of bellhousing.  If auto, unbolt torque converter from flywheel.
Unbolt six bolts from bell housing to block. 
Unbolt motor mounts.
Support transmission.
Lift engine a little ways and look for whatever I forgot to mention.

Good luck and have fun
Larry



How to remove a C3 Engine?

Posted: 3/3/10 9:06am Message 3 of 25
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Manteca, CA - USA
Joined: 11/20/2005
Posts: 3623
Vette(s): 1978,two tone,Metalic Rootbeer & gold 1975 L48 4 speed
We have the archives under the forums column but I've never noticed a post of that nature (but then I've never looked). The procedure would be the same as with most V8 cars but with the length of the nose, the lift would have to approach from the side because most lifts can't reach that far and due to space restraints I'd leave the tranny in the car. It's pretty straight forward. Disconnect any wiring, fuel line, exhaust, throttle linkage and trans. cable if auto trans., A/C compressor? and secure aside. Unbolt the tranny from the bellhousing or from the back of the motor if Auto trans and remove the inspection plate to unbolt the flex plate. Drain coolant and remove hoses. Remove oil lines from radiator and remove fan and clutch ass'y. to pull radiator. It's more obvious when you're standing over it eliminating obstacles one by one, and I'm sorry for being so brief. A service manual might be more specific, but unless it's a authorized GM I don't get much out of them. Something like a "Haynes" is almost totally useless, too vague, lacking important details. Sorry it's not much, but I hope this helps a little.  


How to remove a C3 Engine?

Posted: 3/3/10 9:14am Message 4 of 25
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Manteca, CA - USA
Joined: 11/20/2005
Posts: 3623
Vette(s): 1978,two tone,Metalic Rootbeer & gold 1975 L48 4 speed
Excellent Larry. Your rendition is more detailed and year specific. I was writing at the same time. I'm glad you beat me to the draw.


How to remove a C3 Engine?

Posted: 3/3/10 9:53am Message 5 of 25
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Hot Springs, AR - USA
Joined: 4/24/2004
Posts: 3236
Vette(s): 69 Conv #'s match 427, TKO-600/.64, 3.36HD-Posi, HT, T/T, PS, PB, PW, SP, Leather, Comp XE264HR & Roller Rockers & Lifters, Air-Gap RPM intake, Holley St Av 770 VS, MSD 6AL+Dist+Blaster SS, K&N, Jet-Hot Hooker Side-Pipes, Steeroids, Al Rad, Spal Fans
[QUOTE=VetteSpecialties]There are probably several websites with correct details, but I will give you my version.
Disconnect battery.  Then disconnect all electrical:  Ignition wire, starter wires, alternator, A/C if so equipped, temp sender.
Disconnect oil pressure gauge tube.
Disconnect throttle linkage.
Disconnect fuel line from frame to fuel pump, and return line if so equipped.
Drain coolant and remove hoses, both radiator and heater.
If air conditioned, unbolt compressor and tie up out of the way.
If auto trans, disconnect kick down linkage, and unclip coolant lines from side of oil pan.
Remove flywheel cover from bottom of bellhousing.  If auto, unbolt torque converter from flywheel.
Unbolt six bolts from bell housing to block. 
Unbolt motor mounts.
Support transmission.
Lift engine a little ways and look for whatever I forgot to mention.

Good luck and have fun
Larry
[/QUOTE]
 
I always pull the radiator, shroud and support.



How to remove a C3 Engine?

Posted: 3/3/10 10:35am Message 6 of 25
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sonoma, CA - USA
Joined: 8/9/2002
Posts: 784
Vette(s): 72 LT-1 AC coupe,69 l-36 coupe

pull hood....I would pull the 4 top rad support bolts, lossen the 2 bottoms leave in and roll the support forward, depending how long the car sits the front fenders might start to sag....disc. tack drive pull the dist....discon head pipes pull manifolds...pull fan and pullies...pull carb, pull clutch link and z-bar... disc. PS pump and lay it to the side....disc ground straps...some guys get the car on jacks and pull the front  wheels and tires...good luck!

 

anips2010-03-03 10:41:57


How to remove a C3 Engine?

Posted: 3/3/10 10:35am Message 7 of 25
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Woodland, WA - USA
Joined: 10/14/2003
Posts: 1171
Vette(s): 1977 T-Top,350,Auto Black Ruby Pearl,Steeroids R&P conversion
If you are using a cherry picker type lift you will need to remove one of the front wheels and place car on ja ack stand. you come from the side at an angle with the lift.


How to remove a C3 Engine?

Posted: 3/3/10 11:28am Message 8 of 25
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Joined: 3/3/2010
Posts: 94
Vette(s): 1968 convertible

 Excellent !  thank you all.

 

I have a friend with an engine crane that I am going to borrow – might be a couple of weeks before I get going.  I will take pictures and notes as I go and pending availability (time is short these days) I will post my own how-to for the benefit of others down the road.

 

Thank you all for the information !   




How to remove a C3 Engine?

Posted: 3/3/10 12:24pm Message 9 of 25
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Oak Creek, WI - USA
Joined: 5/21/2008
Posts: 1965
Vette(s): 1981 Great White Shark. Red Interior, 350/190 hp. PS, PB (SS), A/C CC, T-Tops. Served three years in Active Duty Army, then Retired Air Force after 34 years! Badger State Vettes Car Club. 175,000 Original miles!! Now own a 1998 C-5!
Keep us posted !!  Ghost Guy !!  Love to see the pictures of the progress!! Welcome to the site !
Dan



How to remove a C3 Engine?

Posted: 3/3/10 5:13pm Message 10 of 25
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Bloomfield Hills, MI - USA
Joined: 6/29/2008
Posts: 199
Vette(s): 1975 Corvette coupe, 4 speed manual, 383 ci 9.5:1,Edelbrock dual plane Air Gap intake, Alum Heads,Comp Cam, roller Rockers, PS,PB,Tilt
In the near future I may be able to use your photos, I'm thinking of replacing the engine. May be a crate engine.


in Forum: C3 Engines


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