big block camshaft selection - Team Camaro Tech
Engine General Engine Discussion.

 
LinkBack Thread Tools Display Modes
post #1 of 5 (permalink) Old Sep 7th, 08, 01:30 PM Thread Starter
Tech Team
Phil
 
Join Date: Mar 2008
Location: arkansas
Posts: 52
big block camshaft selection

Camshaft question! Has anyone out there used a Comp Cams Magnum Series 280h in a big block chevy. I'm building a 454 for my 67 camaro and plan to use one. It will have headers, about 9.3:1 comp ratio, Edelbrock performer, and a 4 speed. Mostly for street cruising. Let me know what you think. Thanks!
phils67camaro is offline  
Sponsored Links
Advertisement
 
post #2 of 5 (permalink) Old Sep 7th, 08, 01:48 PM
Senior Tech
Dave
 
Join Date: Oct 2005
Location: Rhode Island
Posts: 1,356
Re: big block camshaft selection

Yep, had one in a 2-bolt main 454 (.030" over, so actually 461) a few years back. The engine had TRW pistons (I forget the part #), but the advertised static compression was about 10.5:1. The engine used stock "049" oval port iron heads, with headers, hi-rise and 780 Holley.......

Mild choppy idle, no lugging while taking off. Easy to drive. Peaked out at about 5600 rpms. My car is 68 with 3:73 posi and Muncie 4-speed.

IMO your compression is a tad low.

Good luck with the build. Please post results................

-

Dave F. in Rhode Island
'68 Camaro SS Accel DFI 454 (SOLD - I'm a boring Corvette owner now)
Bought my first big-block Chevy in 1970
Chevy-SS is offline  
post #3 of 5 (permalink) Old Sep 7th, 08, 09:13 PM
Tech Team
 
Join Date: Jun 2006
Posts: 69
Re: big block camshaft selection

i run one in my 468 right now. 10.5:1, 781 heads, holly 750, ect. overall i like the cam pulls good ,runs out at about 5800 nice old school cam. i agree your compression might be border line, not sure what is recommended for that cam i think it was 10:1
68bigblockSS is offline  
 
post #4 of 5 (permalink) Old Sep 7th, 08, 10:20 PM
Senior Tech
Wes
 
Join Date: Dec 2003
Location: Leander, TX
Posts: 2,762
Re: big block camshaft selection

One of my favorite cams for a BB. Agree with the boys above. I've run it in no less than three cars. In a 454, she'll come in about 2000 rpm and pull hard to 5500. For the street, it's perfect for a flat-tap. It will also provide enough vacuum for your brakes.

You'd need at least a 3.55 rear (I'm guessing your 4-speed is a wide ratio). A 3:73 would be perfect.

Also agree, this cam would like around 10:1 cr or 10.5 with aluminum heads.

Good luck!
Straight-line-69 is offline  
post #5 of 5 (permalink) Old Sep 8th, 08, 05:16 PM
 
Join Date: Apr 2000
Posts: 21,341
Re: big block camshaft selection

Imho, you will like CC's old 282S solid lifter cam better here but you will have to lash it every so often.

And I'm a solid lifter cam guy.

pdq67



pdq67 is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Team Camaro Tech forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address.
NOTE we receive a lot of registrations with bad email addresses. IF you do not receive your confirmation email you will not be able to post. contact support and we will try and help.
Be sure you enter a valid email address and check your spam folder as well.



Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may 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
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome