Les,
The roller type dyno's have some shortcomings. I have heard that
the rear gear of the car can influence the #'s. The numbers are
inertia driven and may not be 100% accurate. Our local dyno is a
dynojet. Hot rod did some testing but I don't remember the
specifics. I would have expected 275-300 but who knows. Timing, gas
and other tuning factors all come into play. Did you have a chance to
change anything while testing? At least the dyno can be used as a
relative measure. Change something and test against your previous
numbers.
I believe the 70's had vented caps and 71-72 had nonvented.
Walt
http://www.personal.kent.edu/~wbainey/CHEVELLE.htm
----- Original Message -----
From: [EMAIL PROTECTED]
Date: Monday, March 27, 2006 1:24 pm
Subject: [Chevelle-list] DYNO NUMBERS
> Our club had a dyno pull this Saturday and I was wondering if
> these numbers
> sound right to ya'll. Showed 243 hp and 301 tq. Motor is origional
> 396/402 350
> hp in my 70 SS Chevelle. Have a TH400 trans with no A/C. Rebuilt
> motor back to
> stock specs about 7 years ago. Does this sound right? Lot of guys
> were saying
> dyno was off because dyno indicated their motors were not as
> strong as they
> thought. I had hoped mine had a little more power, around 280.
> Also a while
> back there was some discussion regarding gas tank caps. When
> parked on a incline
> gas leaks out around the gas cap. I got the impression it should
> be a
> non-vented cap from discussion on list. My gas cap reads "anti-
> surge" on top and
> "vented" on bottom with an "s" stamped on center rivit holding
> back side to cap. I
> don"t remember having replaced this cap before, but might have.
> Which one is
> correct for my vehicle? Thanks, Les.
>
