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Discussion Starter · #1 ·
I'm going to look at some 9c1s tomorrow or Friday morning and was wondering if someone could tell me how to verify the cars in question are the 5.7 version and not the 4.3.

I know this has probably been asked a great number of times but I haven't been able to find any info.

Any help will be greatly appreciated as my truck finally gave up the ghost (temporarily at least) and I can't afford to keep renting this car I'm driving for a long stretch.
 

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Vin should be "P" for LT-1, "W" for L-99 IIRC, true dual exhaust, both external coolers, LT-1 on SPID sticker in trunk are the most obvious. LT-1 should have GU4(3.08) rearend indicated on the SPID sticker as well. Try to find a G80 Posi also. Major power difference. If it gets down to an argument, the number 327 is stamped on the block of the LT-1's. Good luck.
 

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Just a bit of a clarification here, all 9C1's came with the dual external coolers. Also that and other things like the true dual exhaust should not be used to determine what engine is in a car as those can be added to the L99 powered vehicles quite easily. Easiest ways is to look at the VIN, SPID sticker(if available), and underhood stickers. If the 8 character in the VIN is P then unless you have a very unscrupulous seller it should be the LT1 engine in the car. Another sure fire way, ans fbi9c1 stated, is to check the engine block stamping though that may be hard to see without getting under the car. But the best thing to do is to find a car you like and don't skimp and get a bad car that needs lots of work either mechanical or body work as it is really easy to sink lots of money real quick into our cars, basically start with a good car and work from there rather than trying to make a t*rd into a diamond. - Peter
 

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Discussion Starter · #5 ·
Just a bit of a clarification here, all 9C1's came with the dual external coolers. Also that and other things like the true dual exhaust should not be used to determine what engine is in a car as those can be added to the L99 powered vehicles quite easily. Easiest ways is to look at the VIN, SPID sticker(if available), and underhood stickers. If the 8 character in the VIN is P then unless you have a very unscrupulous seller it should be the LT1 engine in the car. Another sure fire way, ans fbi9c1 stated, is to check the engine block stamping though that may be hard to see without getting under the car. But the best thing to do is to find a car you like and don't skimp and get a bad car that needs lots of work either mechanical or body work as it is really easy to sink lots of money real quick into our cars, basically start with a good car and work from there rather than trying to make a t*rd into a diamond. - Peter
Where would I find the SPID sticker? VIN I know how to find. Never heard of the SPID though.

The biggest thing I'm looking for is the mechanical condition. Second would be as little rust as possible. I've already researched replacement body panels so if need be I can replace any of those a little at a time.

I'm already budgeting for all the regular maintainance stuff to be taken care of as soon as I get the car. Most (if not all) fluids changed. Stealth brake bolt mod and new brake pads and stuff like that.

Now I just have to go find a decent one that runs good and get to work.
 

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