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BillK · 10-23-2012, 12:21 PM

Lyn,
You need to make sure of the piston you have. The true flat top 350 pistons like the 345NP Sealed Power are right around -5cc. The -9.92cc sounds like the 423NP piston with the slight dish and 4 valve reliefs.

10-23-2012, 12:21 PM	#7
BillK Member Join Date: Nov 2005 Location: Waldorf Md Posts: 230 Likes: 12 Liked 30 Times in 17 Posts	Re: piston dome volume on a stock 350 Lyn, You need to make sure of the piston you have. The true flat top 350 pistons like the 345NP Sealed Power are right around -5cc. The -9.92cc sounds like the 423NP piston with the slight dish and 4 valve reliefs. __________________ Bill Koustenis