C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

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Old Mar 28, 2006 | 08:06 PM
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ok today i replaced my lower radiator hose. I got a 86 auto tranny. The l98 hose was a inch to short so the guy suggested that the L-t1 hose is a bit longer to try it. IT FIT PERFECTLY. How do i know what motor i have pics? info details??? cant find block # either ll
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Old Mar 28, 2006 | 08:15 PM
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You mean what type of engine you have? 86=L98
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Old Mar 28, 2006 | 08:18 PM
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If it looks like this:



It is an L98.
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Old Mar 28, 2006 | 08:20 PM
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http://forums.corvetteforum.com/show...93&forum_id=34


Check out this thread......
Your 86 should have the L98......... exposed runners on the intake... and of course a conventional distributor in the back of the mainfold by the firewall....

LT1 has a box for a intake(more or less).... and the optispark(dist.) is located on the front of the motor below the waterpump, buried down by the balancer





Edit...... dam I type too slow these guys got pics and everything

Last edited by Powerdrive; Mar 28, 2006 at 08:22 PM.
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Old Mar 28, 2006 | 08:22 PM
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Neither of the people you discribe would be me but here goes.
If the intake manifold has round runners from the plenum to the base it is a L98.
If it has no runners and is a one piece "squareish" look, it is the LT1
Hope this helps
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Old Mar 28, 2006 | 08:25 PM
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Originally Posted by Square
If it looks like this:



It is an L98.
Square you might want to correct that alignment on that alternator. That belt and the pivot bolt look way off.
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Old Mar 28, 2006 | 08:54 PM
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Is there anyone smarter?




J/K!
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Old Mar 28, 2006 | 09:11 PM
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Thank you jerred your my new smart person
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Old Mar 28, 2006 | 09:21 PM
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Originally Posted by Corvette Kid NC
Is there anyone smarter?




J/K!
you beat me to it, I was going to say,"Isn't that everyone?"
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Old Mar 28, 2006 | 09:30 PM
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Old Mar 28, 2006 | 09:47 PM
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Originally Posted by Jerris
Square you might want to correct that alignment on that alternator. That belt and the pivot bolt look way off.
Will do. The pic was resized for my page, so that may be skewing things a bit, but I will definitely check it out!

Thanks!
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Old Mar 29, 2006 | 07:38 AM
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Look at your spark lug wires, if they all come from the back of the engine(Towards the windshield) you hav ethe L98. If they all come from the front of the engine(towards the radiater) you have the LT1.
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Old Mar 29, 2006 | 09:21 AM
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Originally Posted by Jerris
Square you might want to correct that alignment on that alternator. That belt and the pivot bolt look way off.
It looks like the AIR pump is at a angle.
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Old Mar 29, 2006 | 10:06 AM
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Title-Cracking me up for the last two days
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Old Mar 29, 2006 | 11:47 AM
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If it takes off like a scalded cat but runs out of steam around 4800 RPM you have the L98, it it pulls to the red line you have the LT1.
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Old Mar 29, 2006 | 11:52 AM
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Originally Posted by jrzvette
If it takes off like a scalded cat but runs out of steam around 4800 RPM you have the L98, it it pulls to the red line you have the LT1.

Oh My ....... This could start something..........
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Old Mar 29, 2006 | 11:57 AM
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Originally Posted by Jerris
Oh My ....... This could start something..........
Oh NO, don't do it. (85-91 L98) (92-96 LT1) thats it!
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Old Mar 29, 2006 | 01:56 PM
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Originally Posted by jrzvette
If it takes off like a scalded cat but runs out of steam around 4800 RPM you have the L98, it it pulls to the red line you have the LT1.
I should have prefaced this with:

85 - 91 L98, 92-96 LT1. Its always possible some previous owner did an engine swap, but...
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Old Mar 29, 2006 | 01:56 PM
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Mine is good from idle to redline lol well in my opinion
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Old Mar 29, 2006 | 02:17 PM
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My Goodyear 85-89 hi-miler hose kit came with 2 lower hoses.

Apparently there is more than 1 L98 lower radiator hose.

This could be due to the upright vs tilted radiator mounting in some model years.
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