LTX and LSX Putting LT1s, LS1s, and their variants into Third Gens is becoming more popular. This board is for those who are doing and have done the swaps so they can discuss all of their technical aspects including repairs, swap info, and performance upgrades.

lt1 question

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Old Jun 9, 2009 | 05:13 PM
  #1  
mcgarnicle's Avatar
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From: erlangen, Germany
Car: 1991 Z28 1LE
Engine: LS1
Transmission: T56
Axle/Gears: 3.42
lt1 question

Hello, this may not be the right place for this question, but anyways I have my new engine build plan. The only thing I'm unsure of is what drives the oil pump in a LT1? This seems like a very basic question but I've had trouble finding an answer, without a distributor is there a drive shaft that mounts on the cam drive gear? And would it be able to mount in a gen 1 block? The reason I ask is I am planning to go with a distributor-less ignition system and see it as a simple way to lose the tpi manifold for a simpler lt1 manifold.

Thanks, Kenny.
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Old Jun 9, 2009 | 08:36 PM
  #2  
WhiteBlaze's Avatar
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From: Poconos, Pa
Car: 1984 Firebird
Engine: LT1
Transmission: T5
Axle/Gears: 3.42's
Re: lt1 question

There's a stub shaft that goes in place of the dizzy, so the cam still drives the oil pump.
Can you mount it to a 1st gen block? I would think so, but it would require some machining, I would think...
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Old Jun 9, 2009 | 09:30 PM
  #3  
Klortho's Avatar
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From: Kingston, Tn
Car: 1987 GTA
Engine: LT1
Transmission: T56
Axle/Gears: 9 bolt 3.70 posi
Re: lt1 question

The shaft is held down by a piece that bolts inside the block behind the hole where the distributor would go, if the block is not machined for the bolt you would have to do that (if it is possible)
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Old Jun 18, 2009 | 03:32 AM
  #4  
mcgarnicle's Avatar
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From: erlangen, Germany
Car: 1991 Z28 1LE
Engine: LS1
Transmission: T56
Axle/Gears: 3.42
Re: lt1 question

Sorry for the late reply, I've had family visiting. Thank you both very much I guess I'll be talking to my machine shop about setting it up for me.

thanks again, Kenny
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