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Re: Leaky Header-to-Block Gasket, What's the Best Fix? Chevy 250
Well...pull the intake and exhaust manifolds and re tap the threads if there just completely wiped out re drill and install helicoils .
JB weld to seal intake and exhaust leaks ? maybe as a last ditch effort when your stuck o the side of the road . 
a little info
http://www.inliners.org/ubbthreads/u...t&Number=44551
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1967 Factory short bed - Old school
'71 - 350 / 4bolt / 487 heads / Edelbrock C3BX
Muncie M-22 4 speed / Hurst Comp plus
Factory 12 bolt posi 3.73 / 255-70-15
Smoothed firewall / Factory cowl induction
Power disc brakes / power steering / 3.5-5" drop
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