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Ron Gusack · 03-20-2016, 03:09 PM

Thanks for the comments. I've never been closer than .052 on the intakes and about .075 on the exhaust. I've heard the rule of running the same intake clearance as quench is always safe. Knowing the intakes are chasing the piston is a safety factor too. I stopped using checking springs a long time ago because I couldn't get them to read anywhere near the actual spring. I think it takes much less time to check with the race spring and they're more accurate. My garage isn't heated and checking things cold always concerns me when numbers are tight.

03-20-2016, 03:09 PM	#3
Ron Gusack Member Join Date: Feb 2009 Posts: 244 Likes: 1 Liked 7 Times in 6 Posts	Re: Iron BBC w/ aluminum head growth Thanks for the comments. I've never been closer than .052 on the intakes and about .075 on the exhaust. I've heard the rule of running the same intake clearance as quench is always safe. Knowing the intakes are chasing the piston is a safety factor too. I stopped using checking springs a long time ago because I couldn't get them to read anywhere near the actual spring. I think it takes much less time to check with the race spring and they're more accurate. My garage isn't heated and checking things cold always concerns me when numbers are tight.