I have a unidentified engine out of a Lesabre I would like to know what the #s match up with all that show were K4K located in front of the cyl block, Below it was 05045& deegree Sign above the 5 / between the passenger side ,exhaust manifold port , is P538 EX /and that is all i can find in the numbers that are posted on the Buick . net site. compiled by Tod Dr Frankenbuick & Bob. please help me out if you canon engine size and year :confused: . Joe

64 300 was the only Lesabre engine that had aluminum heads.

Is the 64 lesaber W/alm. heads 300 /Ci. or HP
and if Hp is it at the flywheel or wheels Ft LBs of torque.I sent this in and could not get it to reply. posted 1-20-05 new member Joe Mc

The aluminum 300 CI motor came in two versions: a 9-1 compression 2 bbl engine with 210 HP and a 11-1 4 bbl engine with 250 hp. There is more concerning the specifications here (http://www.buicks.net/years/64/64tech.html).

The horsepower ratings were gross until 1972. I researched various car specs between 1971 and 1972, and the horsepower decrease was about 22 percent under net ratings.

My 64 LeSabre has the aluminum heads....300cid 2bbl