Editing Ford small block engine (section)

==Crate engines==
In the 2000s, [[Ford Racing]] Performance Parts sold two "Boss" [[crate engine]]s and at least one 351 block. Most Ford racing versions of the 302 and 351 feature a siamesed bore and many of them feature drilled coolant crossover holes.<ref>{{Cite web |last=Parts |first=Ford Performance |title=BOSS 302 engine block |url=https://performanceparts.ford.com/part/M-6010-BOSS302 |access-date=2023-04-12 |website=Ford Performance Parts}}</ref><ref>{{Cite web |last=Parts |first=Ford Performance |title=BOSS 302 engine block big bore |url=https://performanceparts.ford.com/part/M-6010-B302BB |access-date=2023-04-12 |website=Ford Performance Parts}}</ref><ref>{{Cite web |last=Parts |first=Ford Performance |title=BOSS 351 engine block 9.5" deck |url=https://performanceparts.ford.com/part/M-6010-BOSS35195 |access-date=2023-04-12 |website=Ford Performance Parts}}</ref><ref>{{Cite web |last=Parts |first=Ford Performance |title=BOSS 351 engine block 9.5 deck big bore |url=https://performanceparts.ford.com/part/M-6010-BOSS351BB |access-date=2023-04-12 |website=Ford Performance Parts}}</ref><ref>{{Cite web |last=Parts |first=Ford Performance |title=351 aluminum block 9.5-inch deck |url=https://performanceparts.ford.com/part/M-6010-Z351 |access-date=2023-04-12 |website=Ford Performance Parts}}</ref><ref>{{Cite web |last=Parts |first=Ford Performance |title=351 aluminum block 9.2-inch deck |url=https://performanceparts.ford.com/part/M-6010-Z35192 |access-date=2023-04-12 |website=Ford Performance Parts}}</ref>

===FR Boss 302===
An all-new Boss 302 engine was unveiled in the 2006 SEMA show.<ref>{{cite web |url=http://www.tuningnews.net/article/061031c/ford-racing-mustang-boss-302/ |title=Ford Racing brings the boss back with new line of BOSS 302 Crate Engines |publisher=Tuningnews.net |access-date=2010-07-15 |archive-date=2010-06-21 |archive-url=https://web.archive.org/web/20100621043539/http://www.tuningnews.net/article/061031c/ford-racing-mustang-boss-302/ |url-status=dead}}</ref>

===FR Boss 351W===
The "Racing Boss 351" (not to be confused with the Ford 335 engine Cleveland-based [[Ford 335 engine#1971 R-code (Boss 351)|Boss 351]]) is a crate engine based on the {{cvt|351|cuin|cc|0}} Ford Windsor engine, but with Cleveland-sized {{cvt|2.75|in|mm|0}} main bearing journals. Deck height choices include {{cvt|9.2|in|mm|0}} and {{cvt|9.5|in|mm|0}}. Maximum displacements are {{cvt|4.25|in|mm|0}} stroke and {{cvt|4.125|in|mm|0}} bore. The resulting maximum displacement is {{cvt|{{engine size|stroke=4.25|bore=4.125|cyl=8|rnd=2}}|cuin|cc|0}}.

The uncross-drilled block with increased bore capacity became available from the third quarter of 2009. A {{cvt|427|cuin|cc |0}} Boss 351-based crate engine producing {{cvt|535|hp|kW|0}} was available from the first quarter of 2010.

In 2010, the [[Suggested retail price|MSRP]] for the Boss 351 block was US$1,999.<ref>{{cite web |url=http://www.autoblog.com/2009/06/13/ford-racing-introduces-new-boss-351-engine-block/ |title=Ford Racing introduces new Boss 351 engine block |author=Korzeniewski, Jeremy |work=Autoblog |date=June 13, 2009}}</ref>