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Old 09-20-2021, 01:19 AM   #5
Pontiac1976
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Join Date: Oct 2015
Location: Ottawa, Ontario, Canada
Posts: 750
Re: Knife valve for block drain plug.....

The only thing that come to mind is some one flushing the block out at the race track to cool down faster between rounds let it out faster. But have seen with old brass rad peacock drain, and hex brass plugs. With the one that on there if it all brass ball valve it would be better for leaks and last longer if your using it for race track. If you want it for less mess draining every 3 to 5 yr cleaning out the system the old brass rad peacock drain may be or would be best for you. If your not going to be using it drain that much do not care about mess then the hex brass plugs would be the best.
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1977 REG cab Long Bed with a 1984 Front Clip, 82 305 .60 over 9.0.1 flat top pistons, 4bbl, TH350, w/84 SS-intake & cam , w/ 1977 big block rad, 1975 gear box, 1984 master w/ metric fittings top & SAE fitting @ portion block, 1975 3.42 gear open diff. Duel 77-87 Factory air cleaner, duel inlet from rad support . Down sized 9' to new 8' Steel flat bed
Was a 77 454 w/308 gear. Taken out 550 lbs. up front with motor clip change.
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