Does anyone know how many El Camino's were produced in 1975 with a 454? My son has one and he recently found a build sheet in the car. Any help or knowledge would be great.

In 1975, the 454 was listed as a LS4 not a LS5.

Hard to say how many were produced, probably fairly rare though.
The fifth letter on the vin tag should be a Y to show that it is a 454 car.
I think '75 was the last year for a 454 in chevelle/elcamino.

We have a bunch of good guys here, maybe they can answer your question,
http://www.chevytalk.org/fusionbb/showforum.php?fid/65/

Got any pics?

http://cgi.ebay.com/ebaymotors/454-El-Camino_W0QQitemZ120180500946QQihZ002QQcategoryZ615 3QQssPageNameZWDVWQQrdZ1QQcmdZViewItem