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#2606454 - 01/14/19 11:24 AM 340 cam plate bolt hole ?
calrobb2000 Offline
pro stock

Registered: 01/20/03
Posts: 1559
Loc: s. e. pa.
hi

rebuilding a 340 and need to know the size of the oil hole in the 1 bolt that holds the cam plate on .

the one i have looks large to me like someone may have inlarged the hole size ?

thank you !

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#2606483 - 01/14/19 12:49 PM Re: 340 cam plate bolt hole ? [Re: calrobb2000]
gtsdude Offline
super stock

Registered: 10/28/05
Posts: 852
Loc: S.E. Minnesota
Don't think it really matters, some came without a bolt at all.

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#2606539 - 01/14/19 02:52 PM Re: 340 cam plate bolt hole ? [Re: calrobb2000]
RapidRobert Offline
Circle Track

Registered: 11/20/03
Posts: 34639
Loc: Lincoln Nebraska
it was an 1/8" hole (in the bolt). early or late (I forget which) had the bolt w hole & the other (early or late) had the drip tray that elim'd that bolt. that is drip oiling & for the ultimate you could drill a .015 (1/64) hole in an alum NPT pipe plug & drill/tap/thread it into the front of the pass horizontle oil gallery & a 3/8 hole in the cam plate for it to squirt out onto the chain. Shorten this pipe plug as to not block off oil down to the #1 main/drivers side gallery (that would be disastrous!). Maybe the chain gets enough splash as is but its fun to mod things & evidently some was needed cuz Ma did the drip oiling. Do the same (.015) in a 3/8 alum pipe plug next to the intergear at the other end/side.
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