linemupz28

1. How close to the claimed 345hp should this car be? Its bone stock.

Your "345hp" package car is probably making more like 360-365hp at the crank.

Never know about or heard this, stock ls1's never cease to amaze even in 2013 lmao.

RPM WS6

iTrader: (3)

The "345hp" package included an SLP dual/dual catback and a Blackwing air lid added to an SS with a base rating of 325hp. These items are good for gains that are comparable to any other aftermarket lid and catback.

Since even a base, stock LS1 car is good for about 345-350hp (not the underrated 305-325 figures that GM published), you can figure that any air lid/catback combo is going to be good for another ~15hp beyond a stock/base example.

linemupz28

Since all ls1's are really 350hp and 01-02 car's come with ls6 intakes which are good for 10-15hp over the ls1 intake should'nt the 01-02 slp cars 360-365hp claim im hearing (from the lid and cat-back) be more like 380hp if that is the case?

RPM WS6

iTrader: (3)

Gains on the later model cars come from a combination of exhaust manifold improvements, improved casting process of the 241 heads, and the LS6 intake....not just the LS6 intake by itself. '01-'02 cars were given a milder stock cam (LQ4/9) than '98-'00 though.

There is probably a 5-10hp difference on average between the various years of LS1 cars. You can figure that the earlier models are closer to 345hp and the later ones are closer to 350hp, give or take ~5hp at each end.

murphinator

iTrader: (2)

Your rpo tag shows it is a 1SZ car but it looks like it has power windows and locks

Added by dealer to sell car I bet...

GreenBlood55

iTrader: (1)

1sz indicate anything other then manual windows/locks?

murphinator

iTrader: (2)

1sz is pretty much a stripped car , not many of them if you search it you will find info

RPM WS6

iTrader: (3)

The dealer did not add power options to this car, GM did. The SPID sticker shows RPO 1SD, which is a preferred equipment group that includes power windows, power locks, power mirriors, power seat, etc.

1SZ = Preferred equipment savings, not a stripper car. Mine have this RPO as well, and they also came from the factory with full power options.

oldmano2z

the numbers are not 1sz for stripper car . it is (1sc) i have one none of the power stuff, no cruise ether. bought a 6cyl car for parts. because trhey are basically stripped down too.

GreenBlood55

iTrader: (1)

Are all SS's numbered? If so, how would I go about finding out what number mine is?

NW-99SS

iTrader: (6)

https://ls1tech.com/forums/special-e...d-numbers.html

Midnight02

iTrader: (8)

Congrats on your new ride. Love NBM (although I'm a bit partial).

Gravik

If you have 2 grand, then cam and supporting mods (Springs, push rods, etc), longtubes, and a catback exhaust.