Re: 427?
I took a 454 2 bolt main block, put a 6223/3.76 steel crank with 7/16 dimple rods and 427 Keith Black hypereutectic
pistons. Heads were 115cc 6272990 rectangular port with 3933163 intake and 4053/780 vacuum secondary Holley. Compression was 9.975 to 1. Ran on 93 octane and was about 520 HP...... Muncie M20 with 3:73 12 bolt. Tons of fun in my 1968 Nova. 
The best part about it was it would rev as fast as a small block which is an advantage over a 454 in my opinion. Plus I love rpm's.... 
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1969 SS396 Post Sedan Delivered to Van-T Topeka KS
MCACN Day2 Concourse Gold Award
1965 VW El Lobo Dune Buggy built in the mid 70’s for the Iowa Shriners
1968 Schwinn Orange Krate
1969 Schwinn Pea Picker
1968 Schwinn 5-Speed
1970 Schwinn 3-Speed Deluxe
1972 Schwinn 10-Speed Continental
1973 Schwinn 5-Speed Suburban
All Original Paint Bikes
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