CLASS RACER FORUM - View Single Post - '66 Dodge D-Dart at Mecum auction

Paul Ceasrine · 12-03-2009, 02:40 AM

Alan,
The D-Dart engines were assembled at Chrysler Industrial. Though the
Camcraft camshaft is stated as a .495/.505 lift, in actuality it has a lift of .504 Intake / .515 Exhaust....
According to NHRA technical, the intake and exhaust valves on both
the 66' D-Dart and standard 273/235HP Commando engines are the same size. (1.78 intake) and (1.50 exhaust)...The cylinder head chambers were measured at 57.3cc... Currently (5) different casting # heads can be utilized, all with the same valve size, #2455315,,#2658920,,#2843675,,#3671585,,#4323302.. The intake port sizes equal 1.70 sq. inch and the exhaust port 1.25 sq. inch.
Paul

12-03-2009, 02:40 AM	#123
Paul Ceasrine VIP Member Join Date: Apr 2009 Posts: 2,546 Likes: 0 Liked 10 Times in 10 Posts	Re: '66 Dodge D-Dart at Mecum auction Alan, The D-Dart engines were assembled at Chrysler Industrial. Though the Camcraft camshaft is stated as a .495/.505 lift, in actuality it has a lift of .504 Intake / .515 Exhaust.... According to NHRA technical, the intake and exhaust valves on both the 66' D-Dart and standard 273/235HP Commando engines are the same size. (1.78 intake) and (1.50 exhaust)...The cylinder head chambers were measured at 57.3cc... Currently (5) different casting # heads can be utilized, all with the same valve size, #2455315,,#2658920,,#2843675,,#3671585,,#4323302.. The intake port sizes equal 1.70 sq. inch and the exhaust port 1.25 sq. inch. Paul