mopar small block rod question??
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Ok let me tell the story lol
I picked up a running 74 360 2bbl 61K from a sportsman rv to replace my current 360 in my 87-D250. Motor now sitting on stand,i pulled intake and valve covers as i want to change it to the 4bbl intake. Looking over the lifters/cam/rockers etc looks good heck the valve springs are still colored red & blue. Gaskets look all original only thing i can see that's been replaced is water pump and thermostat housing had some clear silicone around it. Still have factory timing chain with the plastic covered cam gear. When i removed heads i noticed the head gasket looks original and has the pentastar on it. Well ... when looking at the rod bearings i noticed on the caps there marked with the number in which cylinder they should go. Well they don't match up in the right spot for example #1 cyl has a #7 rod in it/#6 cyl has a #4 rod in it and so forth??? I pulled a main & rod bearing to see if they were replacements but i don't see and numbers that show it. #1 Main bearing has AT-20 8 73 The Rod bearing has DA-49 5 73M |
Has the pan been off before?
Was every thing Torqued down rite? Had you started it to see if it was knocking before you took it apart? |
pan looked as it has never been off it was running before i tore it down it sounded strong and was quiet no odd noises. Someone said the rod caps are marked like that from production and he had a engine with rods all marked with same number.
Also was told the #73 on bearings mean they are original to this 1975 engine. |
That's 70s Mopar for ya, kleen it up an put it back together if the bearings look good.:)
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I agree....
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That's what i'm gunna do check torques of everything new gaskets oil pump/timing chain set. and fix one of my exh valves hopefully :doh:
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