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How do I know if I have an LT1?
To identify a GM LT1 engine, check towards the front of the passenger side of the engine block where there is a machined pad with an 8 digit ID number. In order, the engine code identifies assembly plant, month, day, and engine suffix code. 10125327 is the casting number of all 92-97 LT1 and LT4 engines.
How can you tell the difference between LT1 and LT4?
The rocker arms also have a roller tip. The LT4 has 1.6:1 and LT1 has 1.5:1 Rocker Ratio….
| Specification | LT1 | LT4 |
|---|---|---|
| Crankshaft | Cast iron | Cast iron with undercut and rolled fillets |
| Cylinder Heads | Cast Aluminum, 2 valves/cylinder | Cast Aluminum, 2 valves/cylinder |
What year is LT-1?
1992
The LT1 Engine was used in Corvettes from 1992 to 1996. The LT1, named as a nostalgic nod toward the ever-noteworthy LT-1 of 1970’s fame, began its time under the hood during the 1992 production year.
What does the LT1 stand for?
There isnt no real meaning. GM named our motors the LT-1, after the old 2nd gen Lt1 motors. The old LT1 350 chevy small black was a powerfull motor. So GM felt the LT-1 lived up to that. Same thing with the LS-6.
Is a LT1 a 350?
In 1992 General Motors introduced the LT1, a high-performance 350 cu in (5.7 L) engine based on the Chevy small block V8 and named as a tribute to the original LT-1.
What motor is an LT1?
The 6.2 liter V8 LT1 engine is produced by General Motors for use in performance vehicles and sports cars. It is part of GM’s Gen V Small Block engine family and was first introduced in the C7 Corvette (2014-2019) followed by the sixth-generation Chevrolet Camaro (2016-2023).
What LT engine do I have?
Much like with LS engines, the easiest way to be sure which LT engine you have is to check the 8th digit of the Vehicle Identification Number (VIN).
What’s the difference between the LT1 and the LS1?
The LS1 received a massive upgrade to the cylinder block. The block material was changed from cast iron to aluminum. This helped reduced weight a huge amount, but it also increased heat dissipation. This is important since the LS1 made way more horsepower than the LT1 did.
What kind of head does a Corvette LT1 have?
All LT1s featured a cast iron cylinder block, with aluminum heads for Corvettes and Camaros, and cast iron heads for all other models. If you are ever in the market for an LT1, find a Corvette LT1.
Why did General Motors make the LT1 Small Block?
In 1992, General Motors created the all new LT1 small-block. The LT1 used a reverse-flow cooling system that cooled the cylinder heads first. This allowed for higher compression ratios which increased power output compared to its predecessors.
What’s the difference between a LS1 and a Y block?
Horsepower creates heat, and cast iron holds heat in much longer than aluminum does. The LS1 is also a Y block design. This increased the strength of the block greatly. Chevrolet increased the size of the camshaft core on the LS1. This allows for much higher lift camshaft profiles without harming the camshaft bearings.