400 Project Engine 

Dyno Testing

Click on any picture to enlarge

Please keep a few things in mind, we are using just a stock volume oil pump, using good old 87 octane fuel and a starting with a 600 Edelbrock carb. 

Nothing special.

So far the engine has had a 25 min. break in. We have started with the Weiand intake.  1st. objective answered. After 25 min. with 10-40 oil, oil temp 225, and water temp at 200, we were able to idle at 900rpm and maintain 40-50# of oil pressure. According to many post, that is a big improvement. We are draining the oil, cleaning the filter, and will go back with a 10-30 oil and start doing some pulls. We will see how the oil pressure holds after the tests are all done.

First 2 pulls starting point: 5000 RPM, 25 degree total advance.

423 & 425 Corrected Torque
359 & 365 Corrected HP

Best news, ex. temps are about 1200 degree.
Most low compression engines have a higher ex. temp. like 1400-1500.

Now we went to 5500 RPM and bumped the timing to 30 total. We have now developed a miss at 5500. We are installing another set of springs, after trying a different dist. parts. But we have increased to:

  370 HP and 430 torque, even with a miss.

  Oil pressure is now 40# hot at idle with 10/30 oil.  

Cranking pressure is #170

Final day with the Weiand Intake.  We changed to a MSD distributor and

went to a Holley 650 Carb since we were pulling .8-.9 Vacuum.  

We tried 36 degree advance and it did "ping"

Our miss has gone and now after about 12 more dyno pulls we have

our final numbers for the Weiand Intake.

32 Degrees total ignition

87 Octane fuel

384 Corrected HP

450 Corrected Torque

I'm adding this on 2-11-2005.  It's not in correct order as far as the time line, but I wanted you to see the differences with the original test that is just above.  We installed the Weiand intake again because

the last intake we dyno'd was the Edelbrock and it seems to have a nice

jump in HP that maybe the engine has loosened up a little.

Next intake, Edelbrock

2/2/2005

Oops I lied, we installed the Holley intake.  

Peak torque was comparable, but we did 

have an increase in peak horse power.  Peak power has remained at the 

30.5 degrees ignition advance.

First carb was the 

650 Holley.

393 & 390 Corrected HP

447 & 451 Corrected Torque

Next carb was the:

 750 Edelbrock #1407.

377 & 380 Corrected HP

438 & 437 Corrected Torque

Next we tried a:

 700 Holley

386,391 & 396 Corrected HP

440,446 & 449 Corrected Torque

Now we'll move on to the Edelbrock Intake,  We stumbled upon an old

Edelbrock  S.P.2P. Intake also that we'll try.  We'll try to add pics on it also.

2/9/2005

Now we are going to do the Edelbrock performer intake.