I promised Don in this thread that I would post some numbers once I had the engine running and tuned, so I just took it out in the country and made 3 0-50mph runs to see what it would do compared to a 4.3. Don's truck has slightly larger tires and his engine is somewhat limited by the electronics, but I have nothing else for a comparison.

All three runs were on level ground, tires at 35psi, no power braking, 200 cargo lbs, 1/4 tank of fuel and wing vents closed. <img src="/forums/images/graemlins/wink.gif" alt="" /> Starting at idle, full throttle was applied over the entire run and 7psi boost was online from the beginning. My test isn't as scientific as Don's - didn't use a stopwatch - just waited until the wristwatch second hand was at 12:00 and glanced back at it when I hit 50mph, so I may be a little off, but not much.

1st run = ~7 seconds
2nd run = ~8 seconds
3rd run = ~8 seconds

There was too much wheel spin on the last 2 runs. <img src="/forums/images/graemlins/scared.gif" alt="" /> <img src="/forums/images/graemlins/kewl.gif" alt="" /> <img src="/forums/images/graemlins/smile.gif" alt="" />

I think that might be proof that dynos can give highly suspicious numbers.

If you haven't experienced the rearend of a Gen1 shorty breaking loose on acceleration with 32" M/Ts and counter-steering it on dry pavement, you ain't lived. <img src="/forums/images/graemlins/lol.gif" alt="" />

Where's that dang Escalade V-8 shorty? <img src="/forums/images/graemlins/evil.gif" alt="" />

There was a small amount of surging on full-throttle acceleration continuing above 50mph.... still need a little tuning, or the blower belt might be slipping a bit - so I'm not quite ready for a 1/4 mile attempt. <img src="/forums/images/graemlins/ignore.gif" alt="" />

Frank