[Shotimes] New +20 cam dyno results

[Donald Mallinson]

Alan,

Not down on power, but down on torque.  HP is up about 15 above 6000 rpm..

Dyno comparison isn't a real problem, Dynojet's are pretty consistent, 
and I always use corrected numbers.

As for the car, it was last dyno tested about 4 years ago, but hasn't 
seen all that much use since then, and the car has always felt just as 
strong.  I took it out for a drive right before taking it apart and all 
the old excitement was there.  No signs of aging and I am very confident 
that the car didn't lose more than 10-15 lb ft and Hp between dyno 
sessions.  I know this car very well.

Yes, something else might be at play, a leaky spark plug wire was 
suspected at one point, but we didn't look into it furthur.

In driving, the car is for sure down on torque in around town driving, 
but that isn't the goal of the car, it is going to be for track days.  
AT higher rpm's it pulls stronger past 6000 rpm for sure, but up to that 
point, it doesn't feel any stronger, and dyno testing proves that out.

I will get the charts today and know better how the entire rpm range 
stacks up.  One thing against the bad plug wire scenario is that the 
dyno chart looked very smooth and consistent, a bad cyl would show up in 
the chart pretty easy.

Don Mallinson

Alan Fanning wrote:

>Don,
>
>You're saying that you're down on power across the board relative to stock?
>If that's the case I would start wondering whether another variable is at
>play here: Such as different dyno's?  Several years and many miles later?
>May not be an apples to apples comparison.
>
>    Alan
>
>wrote:
>
>  
>
>>Alan,
>>
>>again, there isn't much chance of that since the new setup at no point
>>after the torque curve gets near peak comes close to the old one.  A
>>loss of about 10 lb ft across the board with the old setup doing 190
>>even before the runners open and the new one never getting over 183,
>>doesn't matter where you take the reading, there is a loss.
>>
>>Don
>>
>>Alan Fanning wrote:
>>
>>    
>>
>>>Mark may have already responded (I'm on digest), but I'm sure he was
>>>referring to making more torque vs the old cams when measured at the same
>>>(higher) rpm. Thus, more HP at that higher rpm.
>>>      
>>>
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