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LT1 intake modified for distributor running TPI electronics?

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Old Nov 14, 2003 | 08:24 PM
  #1  
Zepher's Avatar
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From: Norfolk, VA. USA
Car: 86 Trans Am, 88 Formula
Engine: 95LT4, 305TPI
Transmission: T56, T5
LT1 intake modified for distributor running TPI electronics?

I know that the LT1 intake can be modified for a TPI car with a distributor hole drilled in the back and the water passages and bolt pattern modified.

My question is:
Can an LT1 intake have a distributor hole drilled into it and then use a TPI distributor and a TPI throttlebody with the TPI electronics and ecm on an LT1 engine?

This would elminate the Opti spark and since I am running a 93 ECM, which is almost like a 730 series ECM, it should work, right?

I am just trying to find a way to not use the Opti Spark on my car.
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Old Nov 14, 2003 | 09:31 PM
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Ed Maher's Avatar
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From: Manassas VA
Car: 04 GTO
Engine: LS1
Transmission: M12 T56
Yup. No reason it wouldn't work. GMPP did (and probably still does) sell carb intakes for the LT1 with dizzy holes. So naturally you could run whatever else you wanted as well. Engines are engines
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Old Nov 14, 2003 | 09:38 PM
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From: Norfolk, VA. USA
Car: 86 Trans Am, 88 Formula
Engine: 95LT4, 305TPI
Transmission: T56, T5
Now I just need to get an extra intake and have it drilled and find an SD tpi harness and ecm.
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Old Nov 15, 2003 | 09:32 AM
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From: Savannah, GA
Car: 1997 Jeep Wrangler
Engine: 4.0L
Transmission: 5 speed
Axle/Gears: 8.8 rear, 4.56 gears, 4:1 transfer
You are correct. I have done lots of "distributor only" LT1 intake conversions this year. You will of course need the TPI wire harness and ECM.
Good luck finding a factory SD harness. You might have to go Painless.
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Old Nov 15, 2003 | 09:54 AM
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-So if you do this would you be able to retain factory control of the 460LE tranny?
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Old Nov 15, 2003 | 11:26 AM
  #6  
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From: Norfolk, VA. USA
Car: 86 Trans Am, 88 Formula
Engine: 95LT4, 305TPI
Transmission: T56, T5
Originally posted by regal
-So if you do this would you be able to retain factory control of the 460LE tranny?
I believe you will need a stand alone computer for the tranny.
You might be able to leave the stock LT1 PCM in the car if you are running a 94-97 PCM and just have the tranny wires and a VSS and tach signal hooked up to it.
I have a T56 for my 86.

John, If I find an SD harness soon, I'll be sending you an intake to have it drilled.
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Old Nov 15, 2003 | 12:46 PM
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antoine's Avatar
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From: vacaville,ca
Car: 1988 camaro z28,1997 camaro lt1
Engine: 355 afr 195 heads,tpis big mouth
Transmission: 700r-4 built by me 3-4 z pack
Axle/Gears: 3.42
how do you install the distributor with the motor in.
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Old Nov 15, 2003 | 01:46 PM
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rezinn's Avatar
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If it's in a thirdgen...
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Old Nov 15, 2003 | 08:42 PM
  #9  
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From: Norfolk, VA. USA
Car: 86 Trans Am, 88 Formula
Engine: 95LT4, 305TPI
Transmission: T56, T5
There is plenty of space for it,
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Old Nov 16, 2003 | 08:54 AM
  #10  
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From: Savannah, GA
Car: 1997 Jeep Wrangler
Engine: 4.0L
Transmission: 5 speed
Axle/Gears: 8.8 rear, 4.56 gears, 4:1 transfer
Originally posted by antoine
how do you install the distributor with the motor in.
People running a distributor on a LT1 are not doing it in a 4th gen. There's really no room. Almost every other vehicle has space back there.
I have done the "distributor only" conversions for people with LT1's going in earlier Corvettes, Chevy trucks, Monte Carlos, etc....
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Old Nov 16, 2003 | 09:01 AM
  #11  
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From: Central Illiniois
Car: 89 Formula 350
Engine: 409 nitrous' small block
Transmission: 700r4
Hmm, this brings up interesting possibilites. One question though, does the stock LT1 camshaft have a distributor gear on it, or would you have to swap cams.
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Old Nov 16, 2003 | 06:15 PM
  #12  
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From: Norfolk, VA. USA
Car: 86 Trans Am, 88 Formula
Engine: 95LT4, 305TPI
Transmission: T56, T5
Originally posted by rhuarc31
Hmm, this brings up interesting possibilites. One question though, does the stock LT1 camshaft have a distributor gear on it, or would you have to swap cams.
I believe it does, since there is a small gear that goes into the hole that is in the block to turn the oil pump.
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Old Nov 16, 2003 | 08:24 PM
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From: Charleston, SC
Car: 91 Camaro Vert
Engine: 02 LS1, HX40
Transmission: 2002 LS1 M6
Originally posted by rhuarc31
Hmm, this brings up interesting possibilites. One question though, does the stock LT1 camshaft have a distributor gear on it, or would you have to swap cams.

yeap. thats why you can take a stock Lt1 cam and stab in in a SBC..... a few of the TBI guys are doing that since its a upgrade and used LT1 cams can be had for $50 or less.
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Old Nov 17, 2003 | 02:51 AM
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Car: Check The Sig


looks good here.... here is the link to the intake..http://sdpc2000.com/cart.asp?action=...d=738&pid=2587
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