The cam doesn't "need" compression, the cam is what --in a sense-- PRODUCES compression.
ok here goes i have looked for a decent 340 reasonable priced (no such thing) I am going to rebuild my stock 360 727 trans tc yet to bought but there is a good deal in my area for a 3500 stall and it looks like I am trading my brother for his 3:91 gears weekend runner and part time drag car is end result.
The cam is comp cams xe284h
At 9.5:1 can you get away with cast iron on pump gas or were you using aluminum?
Good to hear the cam is a good one. What stall were you using?
Thanks for all the comments so far
you need a certain compression ratio to make this happen .