I have a stock 77 with the 350CID L48. I want to get another set of valve covers maybe Chrome and i see were its list 2 types Short or Tall. What type are on my 77? Picture below is what's on there now.

I'm thinking stock (yours) is short and tall is for higher lift or larger rockers.

Why not just get yours chromed?

I think it's cheaper to just get a set already chromed from Topflight. 

C3 1968-1982 Chevrolet Corvette Small Block Chrome Valve Covers - Short - Black Chevrolet & Red Bowtie Inlaid - Auto Accessories Of America (topflightautomotive.com)

All small blocks were delivered with the short valve  covers. Tall covers are only needed when using roller rocker arms. 

Thank you both!

And they look like cheap, aftermarket valve covers.  I'm not a stickler for originality, but the Corvette valve covers are better looking.

Those finned valve covers you have would polish up nicely, and look almost chromed. I like those valve covers, polished or as cast...I think they look nice on a small block in any car, but...that's just me. 😁

Hello, I totally agree with Mr Apple. A little grease on the elbow, and some #4 steel wool, you'll be proud to lift the hood at any venue! 

Me three.  Polish them up.

Thank you all for the advice, I'll try and polish them up.