440marv
Well-Known Member
On a 1971 340 are the oil galley plugs behind the cam thrust plate plugged? Or do i just install the thrust plate with them unplugged?
340 oil galley plugs
- Thread starter 440marv
- Start date
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You mean the oil galley plugs at the rear of the block?
They should be pluged or the oil pressure will be ZERO!
They should be pluged or the oil pressure will be ZERO!
440marv
Well-Known Member
no the ones in the front behind the cam thrust plate.
There not threaded, leave 'em alone. Oil is to poor out of them.
moper
Well-Known Member
Either or. I've seen later ones with no plugs. The cam's thrust plate will seal them too.
Make sure the thrust plate if flat so it seals, If not use plugs.
swinger340
Well-Known Member
They came with plugs in them for a reason. If your cam thrush plate is warped at all you would loose your oil pressure. Probably not likely but plugs are dirt cheap why take the chance.
I agree but 1971 did not come with plugs.
swinger340
Well-Known Member
I have a (9/70) 71 340 and it was pluged, But someone had been in there. I usualy deal with the older 340s and every one i have seen has been pluged. Didnt realize some came w/o plugs. Just goes to show there is more to learn every day.
340sFastback
Well-Known Member
Don't drive the plugs in too deep or you will block the oil passage.
I've owned quite a few untouched 340's up to 1972 and none came from the factory with plugs. I still agree that I would put them in while I was there. I was just reporting that they did not come with plugs originally. I also agree with 340sFastback about not driving them in too deep.
440marv
Well-Known Member
Thanks I will put some in.
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