383 TPI Dyno runs

[Dave Zug]

Yea mark, I knew that (really I did) but if I go to the trouble to get a new
cam I'll go custom. the duration on the HOT cam is better, but the LC and
lift I would want custom.. thanks for the attempt - if I did not know that
and already considered it,  it would be great info! I also own $300 worth of
1.6 rr's that I can't just shelf ;-)

I still have the stock WOT adder in there, trying to stay stockish for
winter safety (daily driver!). the MAP WOT adder isnt as pesky of a slope as
the MAF adder was - sheesh!

Are you saying the WOT adder isn't shown in the scan data for advance? That
would be news to me!


----- Original Message -----
From: Romans, Mark <romans at starstream.net>
To: <gmecm at diy-efi.org>
Sent: Tuesday, February 06, 2001 5:24 PM
Subject: Re: 383 TPI Dyno runs


> Dave:  If you ran the "HOT" cam with 1.5 rocker, it's only .492 lift.  The
> .525 is
> with 1.6 rockers.  Also when you are looking at 29 degrees on your spark
map
> remember that there is a WOT spark adder in stock calibrations.
> Mark
> ----- Original Message -----
> From: "Dave Zug" <dzug at delanet.com>
> To: <gmecm at diy-efi.org>
> Sent: Tuesday, February 06, 2001 7:41 PM
> Subject: Re: 383 TPI Dyno runs
>
>
> > The HOT cam has too much lift for my valve springs (510 max springs). I
> knew
> > I would still be in need of duration, but the ZZ3 cam had a really nice
> > price tag, and the car is a street runner.
> >
> > Yes, I have ONE port finished on the new lower intake ;-) I have till
the
> > 23rd to get it done, then another run at it.
> >
> > My chip is still stock spark advance.. I got 7 hp with 3 more degrees
> > between 3500 and 4500. Its at 29 degrees at WOT.. still some room to
push.
> >
> > The cam was definetly off a tooth - the shop did that.. I fixed it. then
I
> > did a poor mans degree-in and it came up dead on. They missed the 0.1
oil
> > squirters to the timing chain too, and the oil pan grooves, and the cam
> > clearance to the rod bolts, and the oil pan dings, ..,..  I educated
them
> > big time. They even wanted me to pay for 3 tear-downs  HA!
> >
> > The 400 is at a different shop.
> >
> >
> > ----- Original Message -----
> > From: <timsiford at hushmail.com>
> > To: <gmecm at diy-efi.org>
> > Sent: Monday, February 05, 2001 5:25 PM
> > Subject: Re: 383 TPI Dyno runs
> >
> >
> > >
> > > >Seems to drop off more severely and earlier then I expect, but only
> > > >300 =
> > > >rpm earlier.
> > >
> > > Dave,
> > > You know everything that I am going to say :-)
> > > 1) I would *almost* bet that one of the reasons is your stock lower
> > intake.
> > >  Lucky for you that you have a *nice* one that is almost ready to go
on?
> > > 2) Camshaft is WAY small.  I never realized you were running  a cam
that
> > > small.  At the very least I would be running a HOT cam.
> > > 3) Did you leave the cam's timing as shown in this pic?!  The machine
> shop
> > > definitely had it installed one tooth off.
> > >
> > > My guess is that at least 40rwhp is being lost by the cam and intake
> > (conservatively).
> > >
> > > Tim
> >
>
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