LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Full tune up

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Old 04-03-2009, 12:52 PM
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Default Full tune up what am I missing?

Okay I have to change the Optispark so while im in there what else should I change. So far the list is.
1.Optispark
2.Plugs
3.Wires
4.Waterpump

Last edited by 1994-B4c; 04-03-2009 at 01:06 PM.
Old 04-03-2009, 01:06 PM
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Originally Posted by 1994-B4c
Okay I have to change the Optispark so while im in there what else should I change. So far the list is.
1.Optispark
2.Plugs
3.Wires
4.Waterpump
Make sure you get a genuine AC Delco/Delphi distributor. Also remove the cap and thread lock the rotor screws before you put it on the car.
Might as well throw on a new coil, it's cheap and easy.
Get NGK TR55 plugs, MSD 8.5mm wires, GM replacement coil. GM waterpump.
Check to see that the rubber is not bulging out of the harmonic balancer, if it is, replace it. You could also replace the water pump shaft seal and the distributor seal.
You could also throw in a 160 degree thermostat while you are at it.
Old 04-03-2009, 01:13 PM
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I'd toss in the TStat as well, if not a 160, at least a new one (which is 180).

I'd say put a cam in it lol

Don't forget to put some RTV on the cap for extra seal insurance, and around the wire harness that goes inside. Also use a nice healthy amount of dialectic grease inside the harness plug.
Old 04-03-2009, 04:07 PM
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dont forget the D1 procharger



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