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Re: Low Oil Pressure - but only when warmed up?
Well spark plugs check take pic's plugs label the. In another 1-6 month re check them take pic's see how the plugs come par in that one or even 6 month.
takes 10 to 15 min per-long leaking valves driving will burn holes in the pistons. lol
I had this have along time a go to me on a 305 V8 motor that was supposed have top end redone still ran good even no the 6CYL after was blowing smoke like crazy.
I guessing you have not pop the heads on this motor 1975 is now 2018 the rubbers in heat cold that many years must be very soft still.
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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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