Bob: Thank you for taking the time to respond. Dick Taylor and you are
always great, with helpful advice and opinions. Richard Good says this cam
profile compares to his GP2, which he says has a 2000-5500 power range and
nice idle. My cam grinder doesn't think the power band is this low, and
expects a noticeable, but not unpleasant chop at idle. I'll let the list
know the results when I get it back on the road.
Regrets I'm not going to be at Mossport for the TR racing and fun.
Regards, Bruce Simms CF1941UO
-----Original Message-----
From: Robert M. Lang [mailto:lang@isis.mit.edu]
Sent: June 24, 2003 12:38 PM
To: Simms, Bruce CIC
Subject: Re: Calling on Camshaft Experts, I need advice
On Fri, 20 Jun 2003, Simms, Bruce CIC wrote:
> Hello listers: I now a re-ground cam with the following profile.
>
> Duration Cam Valve Lobe Hot
> @.050 ADV. Lift Lift Sep. Lash Description
> 225 280 .250 .375 110 .016
> 225 280 .250 .375 .018 TR6 PI
>
> He changed the lobe sep to 110 from 105, as he said it would smooth the
idle
> a bit.
> He also said that power would come on around 2700, which I think is too
late
> for the
> street. Is this cam too hot for a car that is street only at this point?
I
> don't want to put it in if its not suitable.
> other mods - 9.0 compression, mildly upgraded head, headers, sport
exhaust,
> SU HS6, K&N, Crane ignition.
>
> Its not want I wanted due to a miss-communication b/t my mechanic and the
> camshaft grinder.
> My fault in the end. Get all specs in writing. This grind actually costs
> $40 more than the mild perf. I likely need.
> Any body out there have a camshaft core they would consider parting with?
>
> Thank You,
> Bruce Simms CF1941UO
Bruce - while this cam profile is probably not that desireable for a
street car, it is certainly not unusable. 280 degrees is the upper end of
the smoothness spectrum.
What might work in your favor is that the lift is only about 10% more than
stock. This means that the cam won't make your motor a 150+ brute, it'll
more likely be a 130+ motor (obviously the final output varies depending
on a lot of other factors). But the cam as descibed is not a race cam by
any stretch.
As far as good cores - all I can say is "good luck". I have to buy
complete engines for cores right now. I'm down to two core engines. Sorry!
regards,
rml
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