Thread: 427 Block Identification
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Old 02-15-2026, 06:42 PM
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Location: FOUNTAIN HILLS, AZ
Cobra Make, Engine: SPF1439 427FE s.o.
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Hello gents - can we dust this thread off for another run? My SPF was ordered thru Olthoff Racing back in 2002 with a 427 SO stroked to 460 with a 428 crank. I'd like to determine the block lineage to see if it's a service block or part of the regular vehicle production that ended in 68. Couple pics attached to start. We have the driver side hump, the threaded freeze plugs and ribs on passenger side - so it appears legit. How can I determine what Ford generation it may be without removing much - or bugging Dennis. TIA
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Superformance 1439 w/427FE side-oiler. 2007 GT500 40th Anniversary CSM07XL0078. 2007 GT500 40th Anniversary CSM07XL0085.
Last edited by NoVA Cobra; 02-16-2026 at 10:28 AM..
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