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ls1nova71 · 10-24-2013, 09:13 AM

Are you using any kind of overflow bottle? 16lb with overflow bottle is what it would have been stock if I remember correctly and should work fine.

10-24-2013, 09:13 AM	#8
ls1nova71 Registered User Join Date: Dec 2009 Location: Independence Mo Posts: 4,119	Re: 20 lb radiator cap? 5.3 ls swap Are you using any kind of overflow bottle? 16lb with overflow bottle is what it would have been stock if I remember correctly and should work fine. __________________ My '72 short bed build. http://www.ls1tech.com/forums/conver...6-0-4l80e.html 5.3 swap into my RUSTY '71 C10 http://ls1tech.com/forums/conversion...71-c-10-a.html