The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1967 - 1972 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


 
 
Thread Tools Display Modes
Prev Previous Post   Next Post Next
Old 12-19-2006, 01:08 AM   #1
Psycho71
Registered User
 
Psycho71's Avatar
 
Join Date: Jan 2006
Location: Kaufman, Tx
Posts: 827
Cam installation questions (When/Why to degree a cam)?????

I'm really just seeking info right now. I'm not in the process of building yet, but I am planning a motor build and want to understand this.

Background: Right now I'm planning a build; 383 w/forged bottom end, Hyd. Flat or Hyd. Roller cam, 10:1-10.5:1 comp., 200cc 2.02 heads. N2O of course. I'm not really wanting to twist the motor very high (6500rpm max) so I can drive it regularly. Planning on MSD 6al Plus ignition control as well.

Here's my problem: I want to keep my rpm around 2500 at 70mph in O/D with 3:73 gears. Or as close to it as possible. I want a moderate cam that will flow the N2O (up to 200hp) and pull like a monster to about 6500rpm. As the juice will only be used a fraction of the time, I also want as good of performance as I can get on the motor. Most of the cam info I read (summit & jegs) recommends a 2500-3000 stall coverters for the grinds (280+), I THINK, I need? My logic says this converter will be on the verge or slipping (not locked up) at desired hwy speeds, right? Some also advertise "power bands" starting and ending higher than I want.

My Questions?: Can a cam be degree'd to "move" it's effective power band up or down the RPM range? Does this also effect the min. stall speed required? If I'm thinking wrong, can someone please explain this to me? What is the purpose of degree'ing a cam? Benefits? Drawbacks? If I'm right, get ready for more questions. Either way, there will probably be a few more.

I'm not looking for a part#. Although suggestions will not be shunned. I am looking for the information I need to make an informed decision. Any literature suggestions? Thanks in advance for helping to wipe out ignorance.

Jay
__________________
You only need two tools in life - WD-40 and Duct Tape. If it doesn't move and should, use the WD-40. If it shouldn't move and does, use the duct tape.

If a hammer doesn't fix it, you have an electrical problem!



Slot Cars, 1:24 Scale, 100MPH@100,000RPM, fastest things on wheels!
Psycho71 is offline   Reply With Quote
 

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 06:24 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com