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

Paul Ceasrine · 12-13-2009, 06:48 AM

Bill,
I can't remember what we did on the 318's. Definitely had to notch the top of the 273 blocks, when we utilized the 340 heads. We had all the BHJ Cutter Heads and tech info, back in the day. Do remember that you gad to maintain a .030 clearance between the valve and cylinder wall.
The 340 exhaust valves in a 273 made no improvement over stock valves (valve shrouding), but did help in the 318.
Corky,
The CamCraft part #2843719 had a 60 degree overlap.
The stock 273/235HP Commando camshaft .425/.425,,248 duaration
had a 26 degree overlap.
Paul

12-13-2009, 06:48 AM	#139
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 Bill, I can't remember what we did on the 318's. Definitely had to notch the top of the 273 blocks, when we utilized the 340 heads. We had all the BHJ Cutter Heads and tech info, back in the day. Do remember that you gad to maintain a .030 clearance between the valve and cylinder wall. The 340 exhaust valves in a 273 made no improvement over stock valves (valve shrouding), but did help in the 318. Corky, The CamCraft part #2843719 had a 60 degree overlap. The stock 273/235HP Commando camshaft .425/.425,,248 duaration had a 26 degree overlap. Paul