Join Date: Oct 2004
Location: Deliverance, GA
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In 69 Pontiac produced 7 400 engines for the GTO line. 3 were used for the manual transmissions. The following were used for automatics;
XP engine code had 370 hp, Ram-air IV and 759 were produced
XX engine code had 265 hp, economy model and 1,461 were produced.
YS engine code had 350 hp, standard model and 61,576 were produced.
YZ engine code had 366 hp, Ram-air III and 8,491 were produced.
More than likely your dad's engine code was YS.
Last edited by 05GTO; 05-30-2005 at 09:46 AM.