EX274 vs EX 4x4 270 - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- 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
  #1 (permalink)  
Old 10-02-2004, 04:51 PM
Join Date: Jun 2003
Posts: 328
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
EX274 vs EX 4x4 270

Was just wonder'in about these two cam's for a posible cam choise for my 350 sbc, #1 is the part # 12-243-3 a EX 4x4 grind with an Adv dur. of (270 in- 278 ex) (226 in- 234 ex @50) (.480 in- .498 ex lift ) (111 L/S) and cam #2 is the EX274 with an Adv dur. of (274 in-286 ex) ( 230 in-236 ex @50) ( .487 in- .490 ex lift) (110 L/S) both at a 1800 to 6000 rpm range, and both require the same valve spring. I do have these spring's ready to install when the time come's. I know that i other post's i've stated that i had a Comp 268H High Energy cam for this project but since switched to a flat top piston to get the C/R down under 9.5 that i could benifit more from a EX Energy grind. Just bounce'in around idea's because one of Summit's tech guy's told me that the EX274 would be a good match for my S/R Torquer head's, and the Edelbrock EPS manifold, saginaw 3speed, 3.40 gear's, and .28in radias tire's.(Oppinion's Please)

Reply With Quote Quick reply to this message
Sponsored Links
  #2 (permalink)  
Old 10-02-2004, 07:01 PM
coldknock's Avatar
Last photo:
Join Date: Feb 2004
Location: Social Circle, Ga.
Age: 45
Posts: 1,533
Wiki Edits: 0

Thanks: 0
Thanked 2 Times in 2 Posts
Stick with the 268 you have or an XE 262. Both of those cams you're looking at are kinda big if the comp. ratio is under 9.5-1.
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

All times are GMT -6. The time now is 12:04 AM.

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 Hotrodders.com 1999 - 2012. All Rights Reserved.