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Old 01-27-2010, 07:09 PM   #25
glock35ipsc
Next project: 1970 K10
 
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Join Date: Feb 2004
Location: Fort Collins, Colo 80524
Posts: 6,685
Re: The 5.3 Blazer build

Eeks, I really wouldn't know for sure. But if I had to guess, I would say the bolt size was around 4mm, maybe 5mm. Might be easiest to make that SAE, it might be easier to get an insert for SAE threads, #10 or 1/4". If you can, measure the I.D. of the hole and see what they have that will fit in there.
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1970 Chevy K10 LWB "Goldie" 350/TH350 next project!!
1981 Chevy C10 LWB 355/TH350 - My son's truck

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