Not Ranked
550 hp seems very optimistic to me also, but that is a number that is being shared from an east coast engine/car builder.
I am currently building an A/P 289 that will use OEM heads, block, dual plane intake, solid lifter cam, non roller rockers, lots of porting but not much HP. I am building this car around the SVRA gold Medallion Specs. Maximum HP has to be within 20% of original period HP.
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