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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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| | | | Joined: Mar 2008 Posts: 1,775 'Bolter | | 'Bolter Joined: Mar 2008 Posts: 1,775 | From what I've researched myself, is that the vortoec heads had some seal clearance issues when using bigger cams. Seems as though .460 is about the max without problems. You need to machine the valve guides back if you want more lift. You seem to have a pretty aggressive setup as it is so, maybe scale back your cam choice a little and everything should be fine. http://www.chevyhiperformance.com/howto/97458/viewall.html | | |
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