[Shotimes] New +20 cam dyno results

[Adam Parrott]

To borrow from the dairy-based saying, "got dyno graphs"?  :)

Adam


----- Original Message ----- 
From: "Donald Mallinson" <dmall@mwonline.net>
To: <shotimes@autox.team.net>
Sent: Saturday, May 28, 2005 12:50 PM
Subject: [Shotimes] New +20 cam dyno results


Just got back from the first dyno test of the '89 with the new setup.  
Here are the details:

Previous tests:
205-207 hp at 6100 rpm
196 lb ft at 4800 rpm  and 190 @ 3100 rpm (before runners open)
180,000 miles on the car/engine now, test above done at probably 165,000 
miles. Engine is healthy using about 1/2 quart per 3000 miles like it 
has since it was 45,000 miles young when I bought it.

BOS basically, without a computer chip, running a Pro-Flo 77mm Maf.  
Walker exhaust with generic turbo mufflers.

New:
+.20 cams
EH intake runners
BBB
new cam belt, plugs, wires, with NO computer chip or tuning, same setup 
otherwise as above.

220hp @ 6700 rpm
182.5 lb/ft @ both 3500  and 5500 rpm  Torque basically flat between 
these rpm's except for a slight dip when the runners open at 4000 rpm.

Air/Fuel mixture is basically 13-1 from about 3700 to 5700 rpm and then 
has a slow drop to 11.5-1 at 7000 rpm.

First, I am shocked at the loss in torque, this is the exact opposite of 
what I wanted.

Second I am a bit disappointed in the HP gain, but maybe more is to be 
had with some computer tuning.

So tuner guru's..... a couple questions:  Where did my torque go and 
will tuning get any of it back?  Is there more HP to be had?

Don Mallinson