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Old 02-19-2018, 09:59 PM   #18
'69 Gmc
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Join Date: Feb 2016
Location: Columbia TN
Posts: 145
The lift limit is definitely corrected without machining with the proper pieces. I’ve studied and measured the heads I have several times. The spring kit claims .550 lift, but as stated heads vary. All of mine will pull .600 before any contact. So even .550 lift leaves a .050 cushion. My cam I intend to run is .480 valve lift with 1.5 rockers. I ordered new stainless valves today. Just gotta decide what rockers to run.
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