DeTomaso Mailing List: December 98, Message #203

Specs for motor:

750 holley dble. pummper
Port plates on exhaust (the really good ones)
headers
Jacobs ignition system
Flat top pistons

Desire:
Good hp and torque
Streetable
Good vaccum
Power start low and wind until 6000 RPM

Hydraulic Cam specs:
540 gross valve lift on intake, .560 on exhaust
Advertised duration-291 degrees (intake) 300 (exhaust)
Duration @.50-226 degrees on intake and 235 on exhaust

valve timing:

intake:open at BTDC-6 degrees & closed ABDC-40 degrees
exhasut: open at BBDC 55 degrees & closed ATDC 0 
lobe speration: 111 degrees

Results
Good power, breaks tires loose when goosing it at 20 mph
Some lope, sounds sweet and pulls good.  Still in 500mile break-in.

S. Black






---Dan Jones <djones2@mdc.com> wrote:
>
> Scott,
> 
> What cam specs did you end up with?  I'm curious to compare them 
> with what Cam Research ground for my Aussie-headed motor.
> 
> Thanks,
> Dan Jones
> 
> >>> scott black <timepiecepr@yahoo.com> 12/07 1:37 pm >>>
> 
> Cam Research in Colorado (303.762.8196) ground a customer cam and
> matched the head components for me based on my parts (4V quench heads,
> headers, etc.) and desires (good streetable HP and tourque, good
> vaccum, etc.).  They also broke in the cam.  
> 
> I'm very pleased and the extra money was worth it.  Also, be sure that
> everything is matched (pistons, cam,  port plates, etc.) and BALANCED.
>  My motor was 4 oz. off at the rear of the crank.  What a DIFFERENCE!
> 
> Good luck,
> 
> S. Black
> 
> 
> 
> ---Gray Gregory <rgg@gregorycook.com> wrote:
> >
> > All
> >   We are all aware of Shane's theory of electrical failures being
> caused
> > by the "smoke" escaping from said component. I now have first hand
> > knowledge that expands this theory to include engines. At a track
> event
> > this weekend something inside my motor caused the "smoke seal" to
fail
> > thus allowing large quantities of smoke to escape from the engine
and
> > rendering it non functional. [ the guy behind me said it looked like
> the
> > space shuttle taking off ].
> >  So now it looks like I will be joining the ranks of those who are
> > building engines for their Panteras... I would like to request any
and
> > all information out there on the subject, everything from the most
> basic
> > low budget street engine to an all aluminum dream engine...
basically
> > guys I want to gather all the info. I can so I can make an informed
> > decision on how to proceed from here. So let me have it with both
> > barrels.
> > 
> >  Thanks.
> >  Gray
> > 
> > 
> > 
> 
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> 
> 
> 

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