CLASS RACER FORUM - View Single Post - Thoughts on accepted aftermarket heads for 350?

Chris Hardy · 02-22-2018, 02:38 PM

Wouldn't it be easier for everyone, if NHRA just calls it: Every SBC head must be Less than or equal to 185CC's, have stock diameter valves? Then they just inspect for grinding and pour? We all make a ton of power, and inspection is easy. (FYI, the pinch cross section on the Dart 185cc heads are smaller than the stock intake manifold cross section) Thus, the heads will be a substantial gain once a good valve job and flowing is completed.

02-22-2018, 02:38 PM	#3
Chris Hardy Junior Member Join Date: Jul 2012 Location: Muskegon, Michigan Posts: 57 Likes: 0 Liked 4 Times in 1 Post	Re: Thoughts on accepted aftermarket heads for 350? Wouldn't it be easier for everyone, if NHRA just calls it: Every SBC head must be Less than or equal to 185CC's, have stock diameter valves? Then they just inspect for grinding and pour? We all make a ton of power, and inspection is easy. (FYI, the pinch cross section on the Dart 185cc heads are smaller than the stock intake manifold cross section) Thus, the heads will be a substantial gain once a good valve job and flowing is completed.