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Bb cam retainer? #2222758
12/29/16 02:05 PM
12/29/16 02:05 PM
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Mt Morris Michigan
mopar dave Offline OP
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Finishing the 511 short block today while i have time. This is my first bb build, so my question is, what holds the cam in the block? Using a flat tappet cam. Thanks

Re: Bb cam retainer? [Re: mopar dave] #2222766
12/29/16 02:12 PM
12/29/16 02:12 PM
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Western Washington
Sixgun Offline
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Dave, there is no cam retainer on BB/Gen II Hemi .Basically the chain and the OP drive keep it in place. You can fit a cam button on the chain sprocket end there that butts up against the timing cover if desired, and is a fairly common install on some more serious builds. My .02 Hope this helps.


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Re: Bb cam retainer? [Re: Sixgun] #2222776
12/29/16 02:26 PM
12/29/16 02:26 PM
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Mt Morris Michigan
mopar dave Offline OP
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Ok thanks. Using a tin cover so a button probably wouldnt do much any way. Hoping to get the lower end finished today.

Re: Bb cam retainer? [Re: mopar dave] #2222786
12/29/16 02:39 PM
12/29/16 02:39 PM
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Dayton, WA
wesgtx440 Offline
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The valve spring pressure and the taper on the cam lobes on a flat tappet cam is what keeps the cam in the block. Roller cams have flat lobes which require the cam button to keep the cam from "walking" in the block.


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Re: Bb cam retainer? [Re: wesgtx440] #2222822
12/29/16 03:28 PM
12/29/16 03:28 PM
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Bend,OR USA
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Cab_Burge Offline
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Originally Posted By wesgtx440
The valve spring pressure and the taper on the cam lobes on a flat tappet cam is what keeps the cam in the block. Roller cams have flat lobes which require the cam button to keep the cam from "walking" in the block.
iagree
Also the oil pump drive helps push the cam back towards the tranny, I think scope

Last edited by Cab_Burge; 12/29/16 03:28 PM.

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: Bb cam retainer? [Re: Cab_Burge] #2222944
12/29/16 07:48 PM
12/29/16 07:48 PM
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Mt Morris Michigan
mopar dave Offline OP
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Ok thanks guys. Does the cam gear bolts get washers or just lock tite

Re: Bb cam retainer? [Re: mopar dave] #2222985
12/29/16 09:47 PM
12/29/16 09:47 PM
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Bend,OR USA
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The stock three bolts motors came with no washers shruggy
I've never thought of using them due to how close the bolt heads can be to the cover scope
Blue Loctite and 35 Ft Lbs. you should be golden twocents


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: Bb cam retainer? [Re: Cab_Burge] #2223088
12/30/16 12:46 AM
12/30/16 12:46 AM
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Mt Morris Michigan
mopar dave Offline OP
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Thanks guys.

Re: Bb cam retainer? [Re: Cab_Burge] #2223895
12/31/16 06:46 AM
12/31/16 06:46 AM
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Balt. Md
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Originally Posted By Cab_Burge
Originally Posted By wesgtx440
The valve spring pressure and the taper on the cam lobes on a flat tappet cam is what keeps the cam in the block. Roller cams have flat lobes which require the cam button to keep the cam from "walking" in the block.
iagree
Also the oil pump drive helps push the cam back towards the tranny, I think scope



This is correct on the flat tappet cams which I also use. I did use a washer and locktite on my 3 cam gear bolts. Ron







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