Was there an S-10 SS 350 ???
 

I just saw a Chevy S-10, the later body style, for sale and it had what appeared to be factory SS 350 decals. The sign on the window said 350 V8. I thought there were only V6's in the S-10. Was there ever a factory made V8 S-10?

No. They did not.

nope only came with the 4.3l. you can get stickers and badges that say ss 350.

The Chevy s10 had a stock 350 during the years of 1988-2000.Some owners have even been able to install the big-block GM engines such as the 396–454 in3 engines with minor modifications. - See more at: What years did the Chevy s10 have a stock 350? | ChaCha

The only S10 that had a 350 in it from the factory was a one off they built with a vette motor and all wheel drive. It was never released to the public.

The S10 never came with a 350 stock.