picking up a new engine today have some simple ?s - 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
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 02-21-2013, 09:50 AM
Registered User
 
Last photo:
Join Date: Feb 2013
Posts: 13
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
picking up a new engine today have some simple ?s

After not being able to track down my masive oil leak and ive given up on that tired 307 im going to be picking up a complete pan to throttle body 96 vortec 350 with about 75k on it from a buddy for 400. i know i need a flywheel and intake for it. but my queston is what cam should i run i just bought a thumper cam from comp because i wanted that rough idle.

my specs for my 79 malibu are as follows

18x10.5 rear wheel with a 265/45/r18 tire

NV3500 5 speed with the 1st:3.49 2nd:2.16 3rd:1.40 4th:1.0 5th:.73

I have a 9" that i will be installing with 3.37 gears that i will be installing

2.5" dual exhaust no cats and 40 series flowmaster

I have 14" wilwood rotors with 4 piston calibers up front and 12"rotors with 4 piston calibers in the rear. i used the factory booster and a aftermarket master cylinder. (can run a vac pump if needed)

i dont drive this car often mostly just to car shows looking for lots of sound dont care about power much

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 02-21-2013, 10:06 AM
hcompton's Avatar
Old & Furious
 
Join Date: Oct 2012
Location: MD
Age: 41
Posts: 1,074
Wiki Edits: 0

Thanks: 6
Thanked 87 Times in 84 Posts
The small thumpr cam works well in carb engines but not sure if its going to be happy in a efi car. But comp does sell a cam for efi vortec that will make some good power.

You can use some cams in the efi vortecs but make sure it can be tuned to support the cam. Its almost certainly not going to be happy with a thumpr but i have seen them in a gto it had a few issues but was drivable as long as it was warmed up.

Thumpr Will be just fine if going to carbed setup.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 02-21-2013, 10:27 AM
Registered User
 
Last photo:
Join Date: Feb 2013
Posts: 13
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
im going to be running carb but i bought a thumper cam for my old motor and never put it in its for flat tappet so i thought i cant use it because the newer gm motors have roller cams. i paid 153 for it from speed way and was looking for something in that price range so i can exchange it.
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 02-21-2013, 10:30 AM
hcompton's Avatar
Old & Furious
 
Join Date: Oct 2012
Location: MD
Age: 41
Posts: 1,074
Wiki Edits: 0

Thanks: 6
Thanked 87 Times in 84 Posts
Well if its oe roller you can just buy a cam and use the factory lifters. Cost is much cheaper but probably more than flat cam.

I would go roller for sure a lot of people love the lt4 hot cam and the other hot gm cam that works well with fuel infection or carb.
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 02-21-2013, 10:43 AM
vinniekq2's Avatar
Registered User
 
Join Date: Jun 2012
Location: BC,Canada
Age: 56
Posts: 7,459
Wiki Edits: 0

Thanks: 292
Thanked 709 Times in 684 Posts
you can get a small roller cam with a lumpy idle.If sound is important,,,,
consider 3 inch exhaust with X pipe for the same reason.
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 02-21-2013, 11:14 AM
Registered User
 
Last photo:
Join Date: Feb 2013
Posts: 13
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
My car sounds great as it is i just want a cam that will give me the lobe at idle. just looking for some specs on a cam or a good part number that will work with the vortec heads and give me a nasty idle. as i really only drive my car on a trailer and off a trailer and a cruse once in a while.
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 02-21-2013, 11:36 AM
vinniekq2's Avatar
Registered User
 
Join Date: Jun 2012
Location: BC,Canada
Age: 56
Posts: 7,459
Wiki Edits: 0

Thanks: 292
Thanked 709 Times in 684 Posts
If you are looking for a cheap sound and dont care about power,buy a thumper/voodoo,w/e.
If you want power.buy either a low lift roller hydraulic with a tight LDA,or a oval,short track limited lift race cam.
Reply With Quote Quick reply to this message

Recent Engine posts with photos

Quick Reply
Message:
Options

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:
If you do not want to register, fill this field only and the name will be used as user name for your post.
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 for yourself.
Email Address:

Log-in

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
engine picking dilemma blakjak Hotrodding Basics 3 11-22-2011 09:36 PM
Need help picking out an engine oldschoolboy Engine 22 08-06-2008 06:08 PM
Simple yes or no engine question...... STATUTORY GRAPE Engine 12 04-29-2008 04:20 PM
Picking the right juck yard engine fastestfood Engine 9 03-31-2007 01:25 PM
help picking out an engine stand? RustyOlRanger4x4 General Rodding Tech 8 01-29-2004 11:14 AM


All times are GMT -6. The time now is 11:17 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.