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James L Miller · 02-09-2012, 01:17 AM

I think the current NHRA specs for a 1969 340 still apply to Pure Stock. The cam lift is higher on the exhaust. I think the service manual lists it as .429"/.444" or something like that, but Chrysler fed NHRA some enhanced numbers way back when.

HP Disp Deck Cl. Valve notch Int./Exh. Valve Cam lift
275 340 DP .045ab Flat w/n 5.45 cc 2020/1600 462/473 .035 Outer w Damp

02-09-2012, 01:17 AM	#25
James L Miller Member Join Date: Apr 2005 Posts: 494 Likes: 6 Liked 25 Times in 16 Posts	Re: Pure stock 340 Mopar I think the current NHRA specs for a 1969 340 still apply to Pure Stock. The cam lift is higher on the exhaust. I think the service manual lists it as .429"/.444" or something like that, but Chrysler fed NHRA some enhanced numbers way back when. HP Disp Deck Cl. Valve notch Int./Exh. Valve Cam lift 275 340 DP .045ab Flat w/n 5.45 cc 2020/1600 462/473 .035 Outer w Damp __________________ Mopar 2 Ya!