how many 427 cars had 427 ci engines

[Tom Kirkham]

The generally accepted numbers are:

All comp cars and all SC cars had 427 SO
CSX3101 - CSX3199 427 TO
CSX3200 - CSX3299 428 PI
CSX3300 to the End 427 SO

[CSX3183]

Tom is correct.

[marcocsx3121]

My experience fits with the list shown. CSX 3121 was delivered with a 427 TO engine with what were called in the 60s "low riser" heads.

[Nedsel]

Those numbers are close enough. Factory records suggest the first few 33xx cars came with 428's, and then the swap to the 427 side-oiler was made.

As for the often-quoted phrase that "Shelby American built 356 427 Cobras," a check of the breakdown at the top of the originality forum will show that there were fewer than 315 made, with allowances for whether or not one considers a bare chassis a Cobra.