Hello all, and thanks for all of the patience and help.

Im still not making smart choices but progressing anyway. still looking into lumpy cam(Oregon or Mummert 284/292) in a 292 - 330 motor(2nd block with 312 crank to offset) non posted semi ported g heads, stainless valves and hardened seats, 1.54 rockers. 6k-6500 redline max in a roughly 3000 lb manual ranchero. my current distraction from progress is valvetrain. looking into beehive valve springs but valvetrain was still voodoo after school went way too far too fast to really understand.

For beehive valve springs ive found pac 100@1.750 285@1.215, fell like open pressure is a bit high, found a set of Howards with 120 @1.68 and 295 at 1.175. From another recent post adjusting opening up install height toward 1.750 (95.5@1.750 and 280.5@1.245) be happier? any help of articles to reread would be appreciated. 

I’ve had 3 cams from Mummert, the “biggest” a 280 series. With either him or Oregon. I’d buy the lifters and springs they recommend. I’ve never lost a cam on break in, and I don’t care to. Especially in a y block.

miker
55 bird, 32 cabrio F code
Kent, WA
Tucson, AZ

Miker is 100 % right.  Get  recommendations from whom you buy the cam .  If not, they may not guaranty the cam.
What are you building the engine for.  A street cruiser or a race car?  If a street car, don't buy a cam not designed for it.

54 Victoria 312;  48 Ford Conv 302, 56 Bird 312
Forever Ford
Midland Park, NJ

Although there are a number of cam manufacturers/grinders that have off-the-shelf Y-block cams, not all of them offer valve springs that are specifically for their Y-block cam. I bought a Schneider 258F cam (not a regrind). After buying it, I decided I wanted a bit more duration but similar lift. I sold the cam (still in box) to a well-known Y-block builder and bought Howard's 292002-10 cam. The Howard's cam card does not have valve-spring recommendations, and they don't offer a Y-block-specific valve spring. I started looking for Beehive springs with similar specs to the recommended springs on the Schneider cam card. Initially, I bought PAC-1283 springs, retainers, & 10-degree locks. Unfortunately, those springs would not fit over the ECZ-G valve-guide bosses, and the machine shop didn't have the correct-size cutter. Further research led to my buying PAC-1286 beehive springs. The 1286 springs were drop-in, no shims needed, and I was able to use the retainers & locks that I had bought for the 1283 springs. The 1286 springs are a lower rate than the 1283 springs, but open pressure at net lift of .485 is 272 lbs. The seat pressure is 135 lbs., but it's open pressure that you have to worry about. Ted Eaton recommended keeping open pressure below 300. 

If you're going to buy a Clay Smith cam from John Mummert, buy whatever springs he recommends for the cam. There's nothing fancy/exotic about his springs, but he won't sell you the wrong springs, and they are more affordable than the PAC springs.                                                                                                                              I will add that the machine shop was impressed with the quality of parts I supplied, which included Mummert's (SI) stainless valves.