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

what year LS1

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Old Sep 17, 2005 | 11:05 PM
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Default what year LS1

I have a LS1 motor that I want to put in my 90 vett. Can anyone tell what year car this engine came in or what year it was made. On the back of the block near the bell housing on the right side it has the following engraved 9802510:112 and on the other side it has the number 12550592 m cast in the alluminum. thank you if you can help.

cal
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Old Sep 17, 2005 | 11:16 PM
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Don't know the exact year but here is waht I have,

12550592...350...97-up...crossbolted block, Gen.III, "LS1", aluminum



If I remember corectly the m indicates Mexico
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Old Sep 17, 2005 | 11:55 PM
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Ask in the C5 section, they know the LS engines.

It doesnt really matter though, an LS1 is an LS1.
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Old Sep 18, 2005 | 01:42 AM
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not true.. there are alot of differences in the different year LS1's.. different computers, intakes, heads, cam, etc.

the 01+ are the best. LS6 even better.



It took a airlid + catback + tune for my 00 to catch up to what my 01 did completely bone stock
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Old Sep 18, 2005 | 10:26 AM
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Default Fuel pressure

What I am worried about is there was a fuel pressur3 change from 98 to 99 I believe.
cal



Originally Posted by vader86
Ask in the C5 section, they know the LS engines.

It doesnt really matter though, an LS1 is an LS1.
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