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Mike Taylor 3601 · 09-30-2015, 01:20 PM

have you checked on Pac? 1409X is around that pressure,set up slightly shorter than you mentioned, I have set them up 215-220lbs about 425-450 with .430 lift.
They also have a BBC version that may work for you.
Manley has a few to choose from also.
Mike Taylor 3601

09-30-2015, 01:20 PM	#2
Mike Taylor 3601 VIP Member Join Date: Oct 2008 Location: Somerset,Ky Posts: 1,372 Likes: 355 Liked 307 Times in 103 Posts	Re: Valve springs 340 Stocker Engine have you checked on Pac? 1409X is around that pressure,set up slightly shorter than you mentioned, I have set them up 215-220lbs about 425-450 with .430 lift. They also have a BBC version that may work for you. Manley has a few to choose from also. Mike Taylor 3601