Subject: [Tigers] Camshaft Recommendations

From: Joe Brown via Tigers <[email-masked]>
Date: Fri, 25 Jan 2019 17:54:54 -0600

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Hi,
My poor Tiger's engine was rode hard and put away wet by the original
owner.  I am in the process of rebuilding it and now I am having trouble
with the cam.  The machine shop put in new cam bearings and I was having a
hard time sliding in my old cam.  I finally went back to the machine shop
and they determined that my old cam is warped.  They were able to slide in
a cam from a 289 with no trouble.  They said they might could make my old
cam work but I don't like the sound of that.  So I am looking for a new cam
that is as close a match to the old one as possible.

The original cam is Ford part number C3OZ-6250-B and several vendors say
they have replacements for it.  But their specs don't completely match up
to the original part. Most of them seem to have higher lift numbers.   I
don't want to have to change anything in the valve train.  Does anybody
have a recommendation for something that will work well in a basically
stock engine?  I'm looking at the Melling MTF1, the Summit SUM-3600 and the
CompCams 31-215-2.

Any help is greatly appreciated.

Thanks,
Joe Brown

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<div dir=3D"ltr"><div dir=3D"ltr">Hi,<div>My poor Tiger&#39;s engine was ro=
de hard and put away wet by the original owner.=C2=A0 I am in the process o=
f rebuilding it and now I am having trouble with the cam.=C2=A0 The machine=
 shop put in new cam bearings and I was having a hard time sliding in my ol=
d cam.=C2=A0 I finally went back to the machine shop and they determined th=
at my old cam is warped.=C2=A0 They were able to slide in a cam from a 289 =
with no trouble.=C2=A0 They said they might could make my old cam work but =
I don&#39;t like the sound of that.=C2=A0 So I am looking for a new cam tha=
t is as close a match to the old one as possible.=C2=A0</div><div><br></div=
><div>The original cam is Ford part number C3OZ-6250-B and several vendors =
say they have replacements for it.=C2=A0 But their specs don&#39;t complete=
ly match up to the original part. Most of them seem to have higher lift num=
bers.=C2=A0 =C2=A0I don&#39;t want to have to change anything in the valve =
train.=C2=A0 Does anybody have a recommendation for something that will wor=
k well in a basically stock engine?=C2=A0 I&#39;m looking at the Melling MT=
F1, the Summit SUM-3600 and the CompCams=C2=A031-215-2.=C2=A0=C2=A0</div><d=
iv><br></div><div>Any help is greatly appreciated.</div><div><br></div><div=
>Thanks,</div><div>Joe Brown</div></div></div>

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From: Rob Hogan via Tigers <[email-masked]>
Date: Fri, 25 Jan 2019 22:41:01 -0500

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I installed the Summit CCA-31-216-2 in my stock 260 which has slightly
greater lift (0.447 vs. 0.433) and duration than the -215 cam.  There was
no interference risk in the valve to piston clearances.
Common knowledge is to maximize the lift the engine / valve operation will
tolerate (valve springs and clearances limited) for improved performance
and select duration to the rpm range of use.  The greater the duration, the
higher the rpm range.  *As a precaution, I'd strongly recommend replacing
the press in rocker studs with screw in studs.*

On Fri, Jan 25, 2019 at 9:18 PM Joe Brown via Tigers <[email-masked]>
wrote:

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<div dir=3D"ltr"><div class=3D"gmail_default" style=3D"font-family:verdana,=
sans-serif;font-size:small">I installed the Summit CCA-31-216-2 in my stock=
 260 which has slightly greater lift (0.447 vs. 0.433) and duration than th=
e -215 cam.=C2=A0 There was no interference risk in the valve to piston cle=
arances.</div><div class=3D"gmail_default" style=3D"font-family:verdana,san=
s-serif;font-size:small">Common knowledge is to maximize the lift the engin=
e / valve operation will tolerate (valve springs and clearances limited) fo=
r improved performance and select duration to the rpm range of use.=C2=A0 T=
he greater the duration, the higher the rpm range.=C2=A0 <u>As a precaution=
, I&#39;d strongly recommend replacing the press in rocker studs with screw=
 in studs.</u></div></div><br><div class=3D"gmail_quote"><div dir=3D"ltr" c=
lass=3D"gmail_attr">On Fri, Jan 25, 2019 at 9:18 PM Joe Brown via Tigers &l=
t;<a href=3D"mailto:[email-masked]">[email-masked]</a>&gt; wr=
ote:<br></div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px=
 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir=3D=
"ltr"><div dir=3D"ltr">Hi,<div>My poor Tiger&#39;s engine was rode hard and=
 put away wet by the original owner.=C2=A0 I am in the process of rebuildin=
g it and now I am having trouble with the cam.=C2=A0 The machine shop put i=
n new cam bearings and I was having a hard time sliding in my old cam.=C2=
=A0 I finally went back to the machine shop and they determined that my old=
 cam is warped.=C2=A0 They were able to slide in a cam from a 289 with no t=
rouble.=C2=A0 They said they might could make my old cam work but I don&#39=
;t like the sound of that.=C2=A0 So I am looking for a new cam that is as c=
lose a match to the old one as possible.=C2=A0</div><div><br></div><div>The=
 original cam is Ford part number C3OZ-6250-B and several vendors say they =
have replacements for it.=C2=A0 But their specs don&#39;t completely match =
up to the original part. Most of them seem to have higher lift numbers.=C2=
=A0 =C2=A0I don&#39;t want to have to change anything in the valve train.=
=C2=A0 Does anybody have a recommendation for something that will work well=
 in a basically stock engine?=C2=A0 I&#39;m looking at the Melling MTF1, th=
e Summit SUM-3600 and the CompCams=C2=A031-215-2.=C2=A0=C2=A0</div><div><br=
></div><div>Any help is greatly appreciated.</div><div><br></div><div>Thank=
s,</div><div>Joe Brown</div></div></div>
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