TedH

I bought Dyno 2000 as my birthday present and promptly captured all of the detailed info that I have about my block improvements, heads, compression, induction, exhaust and cam. The numbers, if accurate paint a very positive picture about the engine combination that I have assembed. According to Dyno2000, my flywheel performance (assuming no accessories here) +/- 5%:

Max HP: 372@5500rpm
Max TQ: 396@4000rpm

High points:
350 block, 4.020 bore, 3.48 stroke
DART Iron Eagle Heads, 180cc intake runner, 75cc exh volume
2.02/1.60 valves
72cc heart-shape chambers
Max flow intake: 222cfm @ .500" lift/28"
Max flow exh: 175cfm @ .600" lift/28"
9.5 CR (flat-top with valve reliefs)
750cfm carb
Dual-plane manifold
Small-tube headers with mufflers (2.5" pipes and dynomax superturbos)
Cam-272H Energizer, single pattern

NOTE: DART provides detailed configuration and flow info on their http://www.dartheads.com website. check it out!

The flow numbers from DART website are for a 4.030 bore vs. my 4.020 bore so I can see where the performance is somewhat overstated. But, at the same time, the Dynomax Super Turbos are reputed to produce more power than open exhaust (I read that somewhere I think...)... I think that and the addition of the K&N filter and stock ram air system should, in my opinion make up for the 4.020 bore.

According to the chart, torque is over 350ftlb @ 2000 and drops below 350ftlb at about 5500rpm. So, over 350ftlbs from 2000-5500 and max torque just short of 400 at 4000rpm. BTW, 2000-5000 is the exact power range for my camshaft... Talk about a sweetspot!

I know this is all on paper but the rear wheel dyno will speak on March 23 in Clearwater, FL. At least I have a sense now for what I might expect in flywheel performance...

I'm psyched! :seeya


[Modified by TedH, 6:36 PM 3/7/2003]


[Modified by TedH, 6:37 PM 3/7/2003]

SmokedTires

I too got DD for my b-day about alittle over a year ago. I have spent just alittle time with that software :lol: . It is very cool to plug in your numbers and see what you come up with :yesnod: .

Nice to see the numbers matching your expectations isn't it :D .

BTW- FWIW, Monty found DD2000 to be within 5% accuracy when he was building his engine and the real world results ;) .

PRNDL

What does SOP tell you? :) You also need a few 1/4 mile tests! :) MJ

QuickVet

Very cool. But I agree with Mark, you need some 1/4 mile proof :cheers:

Corey_68

It is also my understanding the Destop Dyno computes GROSS hp/tq numbers and not NET. Can anyone shed any light to this?

gkull

Your on your way to stomp your C-5 :smash:

ZL1powr

Here are some comparison numbers that might help.

Desk Top Dyno HP=569, TQ=592
Horsepower based on 1/4 mile speed = weight*(speed/234)^3 = 501
Dynojet Chassy Dyno HP=460, TQ=494