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.

Engine Identification

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Old 08-21-2015, 02:26 PM
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Car: 86 IROC-Z
Engine: 97 LT1
Transmission: T56
Engine Identification

I am putting an LT1 in my 86 IROC, and was told the engine I purchased was from a 97 Camaro. Most of the identifying marks agree with that but the heads are 1996, and it has a vented Optispark. Was the dealer correct in telling me it is a 1997 engine?
Old 08-23-2015, 05:28 PM
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Car: 92 Firebird
Engine: Supercharged 6.0
Transmission: T56
Axle/Gears: 8.8 3.73
Re: Engine Identification

Model years begin in august, so yes you can get a 97 that was built in summer of 96. Parts surplus and shortages lead to minor year change overs. For the most part, 96-97's were the same so whats the problem?
Old 08-23-2015, 06:54 PM
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Car: 86 IROC-Z
Engine: 97 LT1
Transmission: T56
Re: Engine Identification

I am looking for the PCM pin out diagram for this 1997 engine. Are the 96 and 97 the same in those PCM connectors? So I know what to look for. Thanks
Old 08-23-2015, 07:12 PM
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Car: 92 Firebird
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Re: Engine Identification

Google it, cant think of a more common search

94-95 are OBDI, same pinout
96-97 are OBDII, same pinout as prev, but a few pins added
Old 08-24-2015, 08:35 AM
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Car: 1989 RS with T-Tops
Engine: 2.8L TPI Swapped to LT1
Transmission: 7004r auto Swapped to 4L60E
Axle/Gears: Stock Swapped to 3.27 Posi 9 bolt
Re: Engine Identification

Doing a 97 Firebird engine in my car I found that shbox.com is the best for the diagrams. Do watch thou some of his diagrams show for a 95, you have to do a lot of rechecking and digging to make sure you get it right.
Old 08-26-2015, 05:02 PM
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Originally Posted by Redwhisper
... and it has a vented Optispark.
Do you mean vented to atmosphere, or has the vacuum/fresh air purge?
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