5.7 or 6.1

[sutie]

hey ya'll, im new to the site and absolutly love it, ive allready gotten a ton of information that im use by reading all the posts. i have a little delema though, ive got many more plans lined up for my f-body, but for me to go any further, i need to know my engine size, i just bought the car on my recent return from i raq, i know it has an LS1, but which size? the car has many mods to it, but im ready to install a crank and switch underdrive pullys, is there any hints ya'll can give me on how to find out weather i have a 5.7 or a 6.1? thanks for all the help!

[andrew rs]

If its stock, aka no stroker or bore or possible a new block then it is 5.7. 346 cubic inches to be exact.

[sutie]

its suppose to be a crate LS1 or a built one. how can i tell if it isnt stock, it dynos at 412 RWHP.

[LS2Tuner]

If it's a LS1 it's 5.7L.
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