A few questions about your 454:
Is it healthy? As in... Checked the bearings? Leakdown and compression test?
If so, I would do a budget build. SFT cam, a set of closed chamber heads, and all the supporting mods. Don't get hung up on SCR, the DCR is important too. My 468 is only 9.65:1 SCR, but 8.57 DCR. It is going to have a wicked TQ curve for such a "stock" engine. You'll have the benefit of headers, roller rockers, and much better intake manifold.
Just food for thought...
__________________
1972 SS 454 Chevelle LS5/M21/12 bolt 3.73 posi
1969 Malibu COPO L72/M20/12 bolt 3.31 posi
1968 Malibu LQ9/4L80E/12 bolt 3.73 posi
|