LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

opti swap in ~2 hours

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Old Jul 6, 2004 | 05:43 AM
  #16  
Nostang 96z's Avatar
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Joined: Sep 1998
Posts: 458
From: Newark, DE.
I changed my opti at the track in 1.5 hours. Very easy. Just took off the acc belt, unbolted the rad support and pushed radiator out of the way, unbolted the hub, unbolted the water pump, and unbolted the opti. Reinstalled the opti and fired it up to make sure everything was correct then bolted everything else back up. So it can be done.

Matt
Old Jul 6, 2004 | 08:01 AM
  #17  
CrAkD X 95TA's Avatar
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Joined: May 2002
Posts: 520
From: Boston, MA
it took me all day but i knew nothing going in so i can see how it would be looked at as easy now. altho a bad headgasket kept breaking my waterpump gasket so i ended up screwed anyway.
Old Jul 6, 2004 | 12:16 PM
  #18  
Pasky's Avatar
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Re: opti swap in ~2 hours

Originally posted by Jesse_Boyer
I'm mostly posting this to see if anyone else has pulled the opti without pulling the rad/fans, etc.

Just curious if anyone else has done it this fast. I was told this should take a TON of time, but I honestly can't see how.

Plan I took (electrical connections and small stuff not mentioned):
drain coolant via drain plug on rad, lower passengers side
remove intake piping
remove throttle body
unhook hoses from waterpump
remove six bolts from waterpump and pull WP (i run an electric pump)
remove harmonic balancer
remove wires/connectors from opti (no ignition wires here, I run the Delteq system)
remove 3 bolts from opti and pull

then, reverse for installation.

Honestly, I can't see how it can take anyone 6 hours... (or whatever the book says it'll take). Perhaps if you remove the rad/fans it would take you a little longer, but certainly not 6 hours.

Thoughts?
Did it myself leaving the radiator on, too, took 45 minutes to replace. People make it seem like a day long project...
Old Jul 6, 2004 | 12:31 PM
  #19  
LWillmann's Avatar
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Joined: Nov 2002
Posts: 1,831
From: Middle Tennessee
I just did my first one this weekend.

I spent two hours working to get everything off the front of the engine (including the coil, seperating it from the stock bracket and mounting a new one to the bracket).

I removed the water pump, crank pulley, passenger side fan only, and then the opti.

I had help getting the seals replaced and getting it all back together. I had difficulty keeping the opti from turning while inserting it into the cam and cover though.
Old Jul 6, 2004 | 02:35 PM
  #20  
Javier97Z28's Avatar
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Joined: Dec 1999
Posts: 3,853
From: Jupiter (NPB), Fl
Yah about 2 hours at the most usually. Only takes a bit longer if you have alot of trouble getting stuck water pump gasket off. I like to make sure it comes off nice and clean.
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