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C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

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Old 04-17-2019, 05:16 PM
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Ranger72
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Default OptiDoc. Thumbs up

Just received my Opti from the Optidoc (Brad). I'll update after I have some free time to install it, but it looks solid. He even included a new vent kit, which I wasn't expecting, but sure am happy about.


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Old 04-17-2019, 06:47 PM
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He does very good work. Dan
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Old 04-17-2019, 10:56 PM
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MatthewMiller
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A friend of mine just had a similar experience for his 95 with Optidoc. He installs it this weekend, but we already know it works because he got the video of the test.
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Old 04-18-2019, 09:13 AM
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95LT1ZF
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For some of you that have had this done, is the rebuild cost a set amount or does it vary based on the condition of the opti? My OEM opti was functioning fine when I removed it last year, but I thought about having it refreshed and keep it as a reserve unit.
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Old 04-18-2019, 09:25 AM
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When I pulled my Opti, it was a reman, so I just went ahead and paid for one of his already reconditioned units. I believe he charges a flat rate on his service of reconditioning your own Opti.
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Old 04-18-2019, 10:18 AM
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vette196
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Originally Posted by 95LT1ZF View Post
For some of you that have had this done, is the rebuild cost a set amount or does it vary based on the condition of the opti? My OEM opti was functioning fine when I removed it last year, but I thought about having it refreshed and keep it as a reserve unit.
Yes Its a set price, but he has options like Ranger mentioned
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Old 04-20-2019, 10:18 PM
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Optidoc > LTCC conversion . Esp the LTCC conversions that use a non mitsubishi optical sensor optispark.

thats whats funny about the LTCC conversions - they still require use an optispark 😂,

Last edited by dizwiz24; 05-27-2019 at 04:33 PM.
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Old 04-30-2019, 05:04 PM
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Sorry for the delay, I thought I could just go to Auto Zone, Pep Boys, Advanced, etc and the two hoses that go to heater core to the water pump. Crazy me in thinking they could even find them in the computer. I ordered them from Zip, got them yesterday and installed today. The car fired right yup and honestly idles better than it has before. Not that I ever felt it was bad, but it sounds better and is definitely more responsive. Is it the new plug wires, the Opti, the mental case of me? Don't know, but it runs nice. The car isn't overheating even after running for 30 minutes in my driveway, but the low coolant light is on. I am hoping it's just air in the system and the light will go off after bleeding and topping off during the next bunch of heat cycles. So far, I give Brad an A+.
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Old 05-27-2019, 01:28 PM
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Update, car is still running great! The low coolant light went off the next morning,
I assume the computer saw too great a difference in temps at different locations and assumed the coolant was low. Once the air was purged, all was well. I've shifted it a bunch of times at around 6100 rpm with no issues. Great job Brad.

Last edited by Ranger72; 05-27-2019 at 01:30 PM.
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Old 05-27-2019, 02:52 PM
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If yours is like my 86, the low coolant sensor is in the radiator. You would find it there about 2"-3" below the radiator filler cap on the passenger side, it's got a green wire on it.
The easiest way I've found to fully fill the cooling system is: take an old antifreeze jug and cut off the bottom to act like a funnel. Duct tape it to the fill neck (cap off). start the car and let it run till the thermostat opens and the coolant level in the radiator will drop a couple of inches. Fill it to the neck with antifreeze, pull off the funnel jug and put the cap on the radiator with the engine still running. All done.

Till doing that, the low coolant light would come and go at times. This resolved it.

Last edited by hcbph; 05-27-2019 at 02:53 PM.
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Old 05-28-2019, 09:29 AM
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The low coolant switch is in the external tank on a LT car. The tanks sometimes need to be removed and flushed out.
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Old 05-28-2019, 09:34 AM
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It turned off the next morning and hasn't come back on since. (it's been weeks). I think I'm clear now.
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Old 05-31-2019, 08:25 PM
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I'm about to go for my first opti. I guess wire, plugs, water pump are in order while all this is apart. 93 LT1-55k on it. I think it got wet when changing all my hoses and was back firing under light load.
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Old 05-31-2019, 10:32 PM
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I did hoses, wires and Opti at same time. It isn't anywhere nearly as difficult as people make it seem.
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Old 06-05-2019, 12:01 PM
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Is there a link to Optidoc. I need to get one ordered.
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Old 06-05-2019, 12:15 PM
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Originally Posted by thatsanicepicture View Post
Is there a link to Optidoc. I need to get one ordered.
sent you a PM
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Old 06-06-2019, 06:56 PM
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I would also be interested in the contact info for OptiDoc if at all possible.
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Old 06-06-2019, 09:00 PM
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Originally Posted by sedgwick24 View Post
I would also be interested in the contact info for OptiDoc if at all possible.
[email protected]
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Old 06-08-2019, 10:10 PM
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Thanks for the quick reply. However I haven't heard back from him yet.
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