camshaft question - Page 2 - Hot Rod Forum : Hotrodders Bulletin Board -- Hot Rod Forum

Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Engine
User Name
lost password?   |   register now

LinkBack Thread Tools
  #16 (permalink)  
Old 06-10-2010, 07:27 PM
The mobile view is crap
Last photo:
Join Date: Feb 2009
Location: Middle of the Mitten
Age: 32
Posts: 1,876
Wiki Edits: 0

Thanks: 194
Thanked 107 Times in 95 Posts
Sorry guys, I work out of town during the week and stay in a hotel and the internet was down at the hotel, It is a stock camshaft for a 1993 Chevrolet K1500 5.7 liter with 3.48 gears. The only thing I have for specs on the engine is from my Chilton manual which is as follows:

210 Horsepower at 4000 rpm
300 torque at 2800 rpm
8.5:1 compression which I have maintained maybe went up to 8.75:1
The camshaft is supposed to be a stock replacement cam, the cam number is MC-274, according to my Hayes manual the lift is intake .2565 exhaust .2690.

To know the cam timing would I have to degree the cam? If so then I don't know what the cam timing is.

Reply With Quote Quick reply to this message
Sponsored Links
  #17 (permalink)  
Old 06-13-2010, 05:56 PM
The mobile view is crap
Last photo:
Join Date: Feb 2009
Location: Middle of the Mitten
Age: 32
Posts: 1,876
Wiki Edits: 0

Thanks: 194
Thanked 107 Times in 95 Posts
I have the engine together now and it is ready to go into the truck. Is the stock cam really that bad of a cam? I am putting this subject to rest now, I feel bad about this thread. I have been trying to get somebody to select a cam or send me in the right direction at least. I know it is hard to do because everyone likes different things.
Reply With Quote Quick reply to this message
  #18 (permalink)  
Old 06-14-2010, 05:52 AM
cobalt327's Avatar
Last wiki edit: Intake manifold
Last journal entry: 1980 Malibu Wagon
Last photo:
Join Date: Mar 2009
Posts: 5,031
Wiki Edits: 1616

Thanks: 128
Thanked 616 Times in 565 Posts
Your stock "swirl-port" cam is like many stock emission compliant cams, it is a compromise. The OM has to deal w/emissions, fuel economy and driveability. The problem comes when the cam is changed and it is outside the approximate 10% window the ECM has available to it to compensate.

I don't know if there has been anyone here who has tried to match up an aftermarket cam to the stock heads and ECM you have. But likely, the intake duration would be at or below 200 @ 0.050", the exhaust perhaps 4 more. Lift would probably be in the low 0.400" range.

Increasing the rocker ratio might get you a HP or five, if you feel you just have to do something. Clearances for the push rod to the head slot needs to be verified.
Reply With Quote Quick reply to this message

Recent Engine posts with photos

Quick Reply

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Please select your insurance company (Optional)


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools

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

Similar Threads
Thread Thread Starter Forum Replies Last Post
383 stroker 73monte Engine 13 05-11-2016 11:17 AM
supercharger.... 73monte Engine 16 07-24-2010 10:27 AM
camshaft breakin question? runn141 Engine 11 02-07-2008 02:36 AM
Ignotion Set-ups Native Gearhead Engine 8 11-29-2003 01:20 PM
Hi All I just Joined, Questions Re:454 rebuild Gay-Shark Engine 8 11-29-2003 10:25 AM

All times are GMT -6. The time now is 05:17 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999 - 2012. All Rights Reserved.