cam question
Postmaster
Joined: Aug 2001
Posts: 4,270
Likes: 5
From: Delaware
4wheeling79,
What heads do you have, what is your head flow, and what is your CR? Your motor may be an apple, but buttnuttn8 has an orange.
In buttnuttn8's motor with a Crane #529551 cam, Desktop Dyno says torque = 387@2000 RPM and peaks at 472@4500 RPM. The peak HP is 461@5500 RPM. These are simulated engine dyno numbers, chassis dyno data could be 30% lower.
What heads do you have, what is your head flow, and what is your CR? Your motor may be an apple, but buttnuttn8 has an orange.
In buttnuttn8's motor with a Crane #529551 cam, Desktop Dyno says torque = 387@2000 RPM and peaks at 472@4500 RPM. The peak HP is 461@5500 RPM. These are simulated engine dyno numbers, chassis dyno data could be 30% lower.
Senior User
Joined: Oct 2003
Posts: 368
Likes: 3
From: Longview Tx
danlee, so i guess we are going to start comparing apple's to orange's okay, well. I don't think you know how to use desk top dyno correctly or you should not take desk top dyno to heart. If i put in my engine specs they come out pretty close. You could be right about me lossing 30% if i had a newer model w/ all the accessories and a power robbing auto overdrive tranny. But i don't. So to answer your question i'm running 2V heads ported to the max. Leting the mixture in and out is a 2.10in valve and 1.69ex valve. I do not know what they flow but i will CC the runners, before i put them back together this time. CR was around 10.5 but i'm going to lower it to 9.5 to run on pump gas.
Postmaster
Joined: Aug 2001
Posts: 4,270
Likes: 5
From: Delaware
The motor that we were discussing has a CR of 9.87:1 and has stock 351C-4V heads. Ported 2V heads and higher CR will produce much better results. It has nothing to do with knowing how to use desktop dyno.
I can't simulate a motor properly without CR and head flow data. If I had those numbers for your motor, I might get close to what you say it is. But for you I won't even try.
I can't simulate a motor properly without CR and head flow data. If I had those numbers for your motor, I might get close to what you say it is. But for you I won't even try.
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Senior User
Joined: Feb 2002
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From: bangor maine
funnelweb?
sorry for all the questions im sure you guys are getting tired of me whats up with the parker funnelweb intake i never heard of such a intake and i sumbled arcross it the other day any information or people using it would be great
thanks agian
NATE
thanks agian
NATE
Postmaster
Joined: Aug 2001
Posts: 4,270
Likes: 5
From: Delaware
Nate,
If you want information on a Parker Funnelweb Intake, try this group.
http://autos.groups.yahoo.com/group/...1Boss351HO400/
If you want information on a Parker Funnelweb Intake, try this group.
http://autos.groups.yahoo.com/group/...1Boss351HO400/
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