360 compression ratio, Am I wasting my time?

SGBARRACUDA said
Well the major concern with going with the magnum heads is I can't use the Ld 340 intake that I want to use and the stock 340 valve covers. This was a factory 273 Auto, P/S,A/C car. Witch I'm in the process of putting the A/C and P/S back on. Not looking to make a race car just a nice street car with 68-70 340 type performance. The car has a 727 with the 10 3/4 factory high stall convertor and a 8 1/4 3.21 SG. I will ID the cam when I take it apart and I'll post my findings along with the calculated Comp. ratio. Thanks for everyones feed back. What about using the 273 #920 Head?

It's quite easy to redrill magnum heads to accept the LA intake. There was even someone that had a fixture they loaned out to do it but a machine shop should be able to handle it. My magnum heads cc'd a 64 and that is what the vast majority of folks that have cc'd theirs get.

Stock valve covers work just fine on magnum heads. The 5 bolt holes of the LA valve cover line up with 5 of the 10 on the magnum head. I have been running LA covers on my magnum heads for 20k miles now and not a drop has leaked out.