Desktop Dyno Please....

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Apr 27, 2005 | 12:41 PM

#61

cleanLX

Elder User

Joined: Mar 2003

Posts: 541

Likes: 1

From: Phoenix Az, by way of Fre

from what little I know, 'er think I know, that looks like a nice truck cam.
i'm interested to see what rusty finds out.

Apr 27, 2005 | 12:51 PM

#62

rusty70f100

Post Fiend

Joined: Jan 2003

Posts: 8,600

Likes: 4

From: Iowa

Quote:

Originally Posted by Tmod700

Here is a cam that I had specd for me from Motor Machine & Supply.

Overlap=44
Cam Advance=4
L.C.A. 107
Intake Duration=258
Exhaust Duration=257
Intake Centerline=103
Intake Gross Lift=.533
Exhaust Gross Lift=.521
Intake Opens=26
Intake Closes=-52
Exhaust Opens=-60
Exhaust Closes=18

This is for my truck and towing applications but give it shot and see how it works with your combination on Desktop Dyno or DynoSim.

Those specs seat to seat or .050"?

You really should have started your own thread instead of dragging this ancient one back up. Not that that's a problem...

Now that I've been volunteered, I dont like that cam. The duration is about right for stock type motors in trucks, but you should be running a dual pattern cam with the exhaust having bigger duration. This is because the intake flows more than the exhaust in these motors.

Apr 27, 2005 | 01:03 PM

#63

Tmod700

Senior User

Joined: Mar 2003

Posts: 112

Likes: 1

I wasn't asking that you run it for me. I was just offering another option for a comparison if anyone wants to try it.

Before saying anything about the cam just give it a try and see what you come up with.

Those figures are seat to seat.

Tmod

Apr 27, 2005 | 01:10 PM

#64

rusty70f100

Post Fiend

Joined: Jan 2003

Posts: 8,600

Likes: 4

From: Iowa

Sure, I'd be happy to give it a try with desktop dyno. It wont really take me too long to plug it in. What's the rest of the build?

Apr 27, 2005 | 06:29 PM

#65

Tmod700

Senior User

Joined: Mar 2003

Posts: 112

Likes: 1

Here are my specs

Cylinder= 8
Bore= 4.090
Stroke= 3.78
Cyl Heads= Edelbrock Perf RPM
Head Flow data:
Pressure Drop @ 28.0
Intake--------Exhaust
.100=88------.100=64
.200=153-----.200=113
.300=195-----.300=148
.400=233-----.400=171
.500=265-----.500=183
.600=270-----.600=200

Dual Plane With 600 CFM

Small Tube Headers W/Mufflers

Cam Info

Hydraulic @ seat to seat

Int lift .531
Exhaust lift .520
Int Duration=258
Exh Duration=256
107 L/C
Int open @ 26.0
Int closes @ 52.0
Exh opens @ 59.0
Exh closes @ 17.0

Well that is about it.

Last edited by Tmod700; Apr 27, 2005 at 06:38 PM.