[V8] Hot cams

[Scott DeWitt]

I'm confused, if we can get cams reground for around 500, why would we spend 
a thousand for the same job?

----- Original Message ----- 
From: "Mike Arman" <Armanmik at earthlink.net>
To: <v8 at audifans.com>; "Ron Wainwright" <ron_01056 at yahoo.com>
Sent: Tuesday, November 28, 2006 8:18 PM
Subject: [V8] Hot cams


>
>>
>> Mike, the deal I'm talking bout goes like this.
>> Tom (guy in germany) has 4.2l cams for $165US..so no
>> need to send cams to Hans & Fritz in the Fatherland.
>> The cams for the 4 are $800 + the $165 (cam core) $965
>> + sea shipping $50..or add $41 for air freight $91.
>> So taotal is $1,056 total.
>
> Ron,
>
> I'm not sure I'm following this . . . what I think I'm seeing is Tom in
> Germany has a set of cams (all four) for $165, it costs $800 to
> re-profile them, and then $41 or $91 to ship them here. (Did I get that
> right?)
>
> Does he have more than one set at this price? (I get the impression he
> does.)
>
>>
>>  So you'r talking bout $932 before anybody ships there
>> cams to Florida..& then back to the owner(s). So
>> prices compair to those you have.
>
>
> Not 'sactly. If Crane regrinds your cams, there's no core (no $165) and
> the cost is $432 plus freight to and from Florida - so we're talking $500.
>
> Remember the guy from Crane said we only *might* need buckets - if there
> are no buckets needed, the price to regrind "your" cams is $432 plus
> domestic UPS or Fedex.
>
>
> If we DO need buckets, then it becomes a grand - and the guy in Germany
> doesn't mention needing them or not - if we don't need them for him, we
> shouldn't need them for Crane either. If Tom's cams need buckets, then
> the Germany price goes to $1,500 for the cams and buckets, if he doesn't
> need them and Crane's cams do, the price is comparable. If we don't need
> them with either set, Crane beats the Fatherland by $500 and some time.
>
>
>
> Now - I've looked in Family Album for part numbers, here's what I found:
>
> Exhaust cams are the same PN for all 3.6 and 4.2, standard shift or
> automatic. That tells me even if the head castings are not the same
> (didn't the bore spacing change slightly?), the cam bearing areas are -
> at least for the exhausts.
>
> PT engines open 30.5 degrees BBDC, close 2 degrees BTDC
> ABH engines open 31 degrees BBDC, close 2 degrees BTDC
>
> Note the specs are different, even though the part number is the same! I
> guess half a degree doesn't bother them.
>
>
> Intake cams are different between 3.6 and 4.2, and between std and auto,
> four different part numbers.
>
> PT engines open 11 deg ATDC, ABH opens 7 degrees ATDC
> PT engines close 28.5 deg ABDC, ABH closes 29 deg ABDC
>
> Note the intake cam part numbers are different for standard or
> automatic, but the timing isn't! The timing changes between PT and ABH,
> but not within each engine type for standard or automatic. (Yes, it is
> confusing.)
>
> Again, not a big difference, just four degrees on the opening timing
> (but that does make more of a difference than half a degree.)
>
> Note that I do NOT have the valve lift figures on any of these cams!
> That may be the difference, I don't know yet.
>
>
>
>
>
>> & the guy I talked to said nothing bout replacement
>> buckets..& Mark W who has Scott J's spec2 cams said
>> anything bout replacing the buckets.
>
> Then it is possible the buckets don't have to be changed with moderate
> increases in lift. Recall the extra lift is found by grinding the base
> circle of the cam, so the cam followers now have to go higher up to
> contact the cam - I wonder how much leeway there is here? Can we add
> .100" without problems? How about .250" (that I doubt)?
>
>
>>
>>  There are a bunch of other things that need to be
>> taken into consideration.
>
> True, true, true.
>
>  But I'm still finding out
>> the specs on a more agressive grind than the 260/264.
>>  3 of the cams are billit(sp?)
>
> Should be all four . . . why should one intake or exhaust not be billet
> and the other one is?
>
>  & there needs to be the
>> same lobe seperation..or as close to stock as
>> possible..but as I said there are a few things that
>> need to be ironed out.
>
> Lets try to iron them out - I'm not looking to knock your guy in any
> way, I'm just trying to find the most cost effective way for us V8
> owners to do this and blow off the mommyvans. If the same work can be
> done here, it *has* to be cheaper and faster than sending parts overseas.
>
> When I get the lift figures and some more information, I'll be calling
> Crane back.
>
> Damn, and I just changed the timing belt . . . and its gotta come off
> again to swap the cams. RATS!
>
> Best,
>
> Mike
>
>
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