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Revisited: how do I tell which is exhaust and which is the intake valve with the intake manifold on?

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BSAKing

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Sep 3, 2011, 6:51:28 PM9/3/11
to
HI all - I cannot update anything on this topic (perhaps because it is
an older thread)

So - just a quick update. As someone (I think Dad) had suggested, the
cam was toast.
At least 2 lobes were ground down to smithereens.

So - after checking prices, being cheap, and retired with a fixed
income, I decided to give it a go myself.

I have the engine out and have replaced the Cam, timing gears, chain,
oil pump, and have rebuilt the heads with stiffer spring to go with a
mild cam. I am in the process of re-assembly this week.

It will be awhile before it is back together as I have to do some
snooping around while the engine is out. I'm learning a lot as I go
along.....

The patient (or victim) is a '76 smogger, L-48 SBC.

uncle_vito

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Sep 6, 2011, 8:25:46 PM9/6/11
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Be very careful with those stiffer springs. Unless you are revving to 6000
rpm, you do not need them and they can be very hard on a new cam. Been
there, done that, destroyed my new cam until I put the original springs back
when I did the job again.

"BSAKing" <bsa...@gmail.com> wrote in message
news:808c6b47-06b5-4302...@y21g2000yqy.googlegroups.com...

BSAKing

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Sep 14, 2011, 10:23:19 PM9/14/11
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On Sep 6, 8:25 pm, "uncle_vito" <uncle_vito2...@yahoo.com> wrote:
> Be very careful with those stiffer springs.  Unless you are revving to 6000
> rpm, you do not need them and they can be very hard on a new cam.  Been
> there, done that, destroyed my new cam until I put the original springs back
> when I did the job again.
>
> "BSAKing" <bsak...@gmail.com> wrote in message
>
> news:808c6b47-06b5-4302...@y21g2000yqy.googlegroups.com...
>
> > HI all - I cannot update anything on this topic (perhaps because it is
> > an older thread)
>
> > So - just a quick update. As someone (I think Dad) had suggested, the
> > cam was toast.
> > At least 2 lobes were ground down to smithereens.
>
> > So - after checking prices, being cheap, and retired with a fixed
> > income, I decided to give it a go myself.
>
> > I have the engine out and have replaced the Cam, timing gears, chain,
> > oil pump, and have rebuilt the heads with stiffer spring to go with a
> > mild cam. I am in the process of re-assembly this week.
>
> > It will be awhile before it is back together as I have to do some
> > snooping around while the engine is out. I'm learning a lot as I go
> > along.....
>
> > The patient (or victim) is a '76 smogger, L-48 SBC.

Well - one would hope they are ok - it is a *very* mild cam and the
springs came with it from CompCams. 12-206-2 is their part number on
it. This is all a huge learning curve for me....

BSAKing

unread,
Oct 28, 2011, 8:57:11 AM10/28/11
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Just a small update - I got it all back together again and it all runs
good and sounds good so far. I'll check the oil carefully when I
change it for the first time. I'm running the breakin additive the
first few changes..

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