LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

LT4 conversion timing chain?

Old Oct 21, 2010 | 10:03 PM
  #1  
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LT4 conversion timing chain?

I am looking at this conversion package, to put on a 1994 Lt1 A4

http://teamcperformance.estore.catal...nLT=2&hdnWN=1&

To my understanding all I have to do is buy a 94 msd opti and everything will work fine correct?
Old Oct 21, 2010 | 10:25 PM
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Do not go that direction. You can make more power for less money. Check out http://www.elliottsportworks.com/lt1.html
You don't even need the intake unless you want it for the looks. These guy are also a good choice http://advancedinduction.com/. Talk to either place about what you wish to do with your car; how much hp your looking for, and they will set you up with a head and cam combo. I think the msd opti is the way to go, but many will say stay with a gm opti. I blew up 3 gm units before I bought my MSD opti, never had a problem with the msd opti. Make sure the opti rotor screws are installed using high strength thread locker; the screws like to come out at high rpms on the msd opti. I would also swap to the vented opti

Last edited by henryz28; Oct 21, 2010 at 10:35 PM.
Old Oct 21, 2010 | 10:32 PM
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^^^^^^^^^^^^^^^^^^^
Plus 1 for the reply!
Old Oct 21, 2010 | 10:43 PM
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The topic (LT4 conversion timing chain) and the question (MSD Opti) is confusing. The whole thing depends on what the nose of the cam looks like. Since you have a 94, as long as the nose of the cam has the correct pilot hole diameter, you don't have to change anything. In any case, there is no requirement with any part that you may buy that would require you to buy only the MSD Opti.

Might want to clarify your question...... and listen to the advice in the post above.

Old Oct 21, 2010 | 10:48 PM
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Ive done tons of research on the LE packages and would love to have one, that site is an example of the lt4 kit, not the price im paying for it, but thanks for the tips!

My question is I have been reading that the LT$ timing chain will not work with a non vented opti like on the 94, so would I have to get an opti like the MSD one for everything to work.
Old Oct 21, 2010 | 11:08 PM
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In order to run a lt4 timing set for a vented opti I think you will need the cam for a vented system, the opti for the vented system and the timing cover for the vented system. You will not need a MSD opti just any vented opti.
Old Oct 21, 2010 | 11:16 PM
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Thanks henryz28, that LT4 package comes with a cam, and the timing chain so to make it work all that would need is an vented opti. (like the MSD unit) sorry if I complicated the question, but thanks for answering!
Old Oct 21, 2010 | 11:21 PM
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You will also need the timing cover.
Old Oct 21, 2010 | 11:23 PM
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ok, thanks!
Old Oct 22, 2010 | 12:46 AM
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Make you life a lot easier...
Like the Henry said go to either Lloyd or Advanced and get a set of nice flowing heads and even intake if you like. Pick up a cam that fits your needs/wants. Then when everything is apart check your timing set. If your gears are intact at best just pick up a new chain for a stock set- they are cheap. I was going to upgrade when I started ready all kinds of horror stories of people snapping chains and gears wearing horribly in GMPP lines. My motor runs to 6500rpm with 8 lbs of boost for a long time now on the stock timing set with no issues.

As far as Opti I have run the MSD for years now with not a single issue- where as before I was going thru GM opti's left and right. Many will say they are junk, but I have had great luck. The cap/rotor set for a 94 is set-up to be vented as well so you won't have the issue of getting a different cam/timing cover etc...I don't see much point in mixing and matching parts if you can get the vented opti for your 94 that bolts on just like the stock one.
Old Oct 22, 2010 | 01:01 AM
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I say sale your lt4 stuff on ebay or somewhere else and then you will have the cash for a LE or advanced induction set up. That is as long as the deal your getting on the lt4 stuff is not for used parts. Just one other option to think about.
Old Oct 22, 2010 | 06:03 AM
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If you have the budget, AI or LE is definitely the way to go and provides substantially more bang for the buck than the antiquated LT4 stuff.
Old Oct 22, 2010 | 06:22 AM
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On a side note- how does the LT4 conversion continue to generate so much interest despite its very high price? It surprises me every time I hear someone wanting to do it and thinks it is the best thing out there....
Old Oct 22, 2010 | 06:26 AM
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Originally Posted by Procharged94Lt1
On a side note- how does the LT4 conversion continue to generate so much interest despite its very high price? It surprises me every time I hear someone wanting to do it and thinks it is the best thing out there....
Because vendors so heavily market it. Its appeal to unwise buyers is high. LT4 sounds cool. 425HP?! WOWIES!!! All the parts are put into a nice package, well photographed, and well advertised.

Companies like AI and LE rely on word of mouth and results as opposed to propaganda.
Old Oct 22, 2010 | 08:19 AM
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Originally Posted by RamAir95TA
Because vendors so heavily market it. Its appeal to unwise buyers is high. LT4 sounds cool. 425HP?! WOWIES!!! All the parts are put into a nice package, well photographed, and well advertised.

Companies like AI and LE rely on word of mouth and results as opposed to propaganda.
I suppose it is rather convenient for someone either new or uneducated. And looking back when I had time to read magazines it did seem like there was an add for the LT4 package on every other page. And I guess if you didn't know any better and went from stock to LT4 it would seem like a huge gain. Its sad really....

I personally would rather spend my money with AI or LE who actually take the time to care about a customer and their individual wants/needs/desires and tries every avenue needed to ensure a happy customer than a product mass produced and is surrounded by hype and clever marketing.

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