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1993 383 Lt1 w/ CC306 Cam & 12:1 CR

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Uploaded by on Aug 25, 2008

Here is my 383 Lt1 w/ high compression and lightweight rotating assembly. Took about 6 weeks for us to build in the garage from start to finish.

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Autos & Vehicles

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  • I love the beefy sound of that thing. The Chev smallblock has to be the world's best sounding V8.

  • With LT1's, detonation is handled by the computer (Knock Module/Sensor) retarding the timing when it senses a knock and loud exhaust, noisey valvetrain, or anything else that sounds like detonation will falsely trigger the computer to pull the timing. With a 12:1 cr - what octane were you using!!?? Also, were you using the LT4 knock module? Just curious - Nice Car.

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  • is that an actual LT4 intake, or did you just paint it red? So many try and say they have LT4s, but in reality they only built like 6000+ LT4's. Looks good and sounds sweet!

  • is that an actualy LT4 intake, or did you paint it red?

  • @LT1Fanatic1 you are right by all means about the knock sensor picking up lots of noises to pull timing down, but lucky for the LT1, they used reverse cooling. Not like the vortecs, they just turn the water pump backwards. Some people think thats the same thing. The block of an LT1 is completely different than a standard SBC. They pump water straight up into the heads from the waterpump. Cooling the combustion chambers first. this helped alot with predetonation. Even stock they were like 10:1.

  • @LT1Fanatic1

    You would be suprised what comp you can run on the street these days. 12:1 is pushing it , but with the right cam (bleeding off compression) the right aluminum heads and good tuning skills. 11.5:1 is no problem.

  • the sound of Heaven....awesome

  • yeah dude, so much compresion for pump gas...

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