CLASS RACER FORUM - View Single Post - 350

gsa612 · 06-23-2015, 04:26 PM

In '72 it gets screwed up,you have to run that ^^ flat intake (#753),and head #'s 241 or 292. In '71 you have to run the 287 manifold (semi-flat lol..) with a choice of head #'s 820,241,292, with the 820 being the best.Both years are factored at 315 hp. I can't see why the '72 can't also run the 820 casting along with the other two. If anything the 72 combo should allow the 820 head and drop 10 hp to 305 in rating because of the lower more restrictive intake.Then you might have something,as all other components (cam lift,pistons etc.) are the same. gsa612

06-23-2015, 04:26 PM	#33
gsa612 Senior Member Join Date: Jan 2008 Location: 100th Meridian Posts: 569 Likes: 116 Liked 280 Times in 139 Posts	Re: 350 - 270 Combo Horsepower In '72 it gets screwed up,you have to run that ^^ flat intake (#753),and head #'s 241 or 292. In '71 you have to run the 287 manifold (semi-flat lol..) with a choice of head #'s 820,241,292, with the 820 being the best.Both years are factored at 315 hp. I can't see why the '72 can't also run the 820 casting along with the other two. If anything the 72 combo should allow the 820 head and drop 10 hp to 305 in rating because of the lower more restrictive intake.Then you might have something,as all other components (cam lift,pistons etc.) are the same. gsa612 Last edited by gsa612; 06-23-2015 at 08:58 PM.