Sorry..I should have added more info.
Present engine before I modify it is............
454 BBC - never cut 2- bolt main with cast iron crank / steel rods
heads: GM 990 retangular port open chamber - 2.19 int / 1.86 ex
presnt compression: 12 1/2 to one
intake: Holley strip dominator / Quik fuel 950 cfm / magana flow pump
cam - Comp - solid roller - 244 duration with .631 lift
Crane roller rockers
MSD - crank trigger / 7AL3 box
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No I don't plan on running nirtous
50 % street and 50 % strip
glide trans with 4.88 gear with 9 inch ford / spool rear end