When i bought my '87 SC the lady told me the engine was not the original engine, i have no rpo codes because the console was replaced with a console from an '84 berlinetta with a v6, i checked the rpo codes on here this is how i know they're different cause the VIN comes out as an '87 SC with an 8 cylinder. Is there anyway to check if my engine is an LG4 or one of the 305 4bbl H.O. engines?? Thanks for your help.

 

take ur vin number and go to the vin number thinger on this site it should say what engine u have becuz i did mine and it said i had an lg4 , the vin decoder thinger is right below the rpo decoder in the third gen home page.

 

i checked out the VIN number on here it came up as an '87 SC with an 8 cylinder but the lady said its not the original engine is there anyway to know if its an LG4 or the 305 4bbl H.O. (don't know the engine code for that one).

 

If its not the original engine, you'd need to get the block casting numbers to determine what it is. Chances are its a Lg4 or equivelant. Just about every Camaro I've ever seen that had the motor changed by a shop ended up with a GM goodwrench or another remanned 305 LG4 clone.

 

The thing that makes me wonder is that some of my friends have cars within the 190-200 horsepower range and i can beat them and they're good drivers, which makes me think its not an LG4, the only mods i have are a flowmaster catback.

 

All 1987 carb engines are LG4's, so you dont have the H.O. engine. However its possible you have a 350. The only way to know is to get the block casting numbers off the back of it by the distributor.

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1991 Camaro Z28
5.7L 5-Speed (originally 305)
317 RWHP, 418 RWTQ
13.23 @ 107.62 MPH
Southern California
Member: SoCal 3rd Gen F-Bodies
Member: SoCal F-Bodies
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