Okay first would a LT1 cam be the best choice for a 350 TBI engine going in my firebird.

if so would these valve
springs

http://cgi.ebay.com/ebaymotors/ws/eB...tem=2409609571

be good for the LT1 stock cam in a 350 4 bolt main engine.Or would a ZZ4 be a better choice and if the ZZ4 would be a better choice where can i buy the vavle springs for the ZZ4 cam?

 

Those springs would be fine for a LT1 cam but I think an LT1 cam is a bit too mild in a 350 for me. I have a swap in the making right now too and I'm working on still figuring out exactly what I want in there before I start doing stuff. I was actually leaning towards a ZZ4 cam perhaps but I don't know from experience how the TBI and computer react to it. I'm sure a ZZ4 will need more tuning than an LT1 as well. Cam's are a whole different story in a 350 compared to a 305, remember that, where an LT1 cam was decently stout in a 305 its pretty stock in a 350. Check out some cams from Crane and Comp too and see what they have.

 

Your cam choice depends on the rest of your parts, heads, intake, and exhaust. You have to match your entire setup to work together. Also how do you want the engine to run? Generally the larger the cam the higher the power band.

 

i really want a engine that pulls all the way up from 35oo to more than the stock red line which on mine was a 4200