Intake Question For Vortec Swap And Future 383 Build - 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 02-09-2013, 09:23 AM
Registered User
 
Join Date: Jul 2011
Location: Missouri
Posts: 80
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Intake Question For Vortec Swap And Future 383 Build

OK. This is the same 78 350 in a 5200# truck with 3.73 gears and 4 speed manual. Because of the tall tires my cruise is 2000-2200 rpm.

My end use will be a daily driver/tow/haul. I am on an extremely tight budget. My end result I think will be when I rebuild the engine and step up to a 383 build.

For now I am going to freshen up a set of used Vortecs and maybe a cam change.

I have been looking and reading about intakes and have a couple of questions. I want to be able to reuse the intake on a 383 but don't want to kill my 350. It looks like I need to stay away from the air gap type manifolds. Would something like the Performer RPM or similar manifold work well or is there a better choice? I didn't know if the runner size would kill my torque. I am not particular on brands. Is there much difference in tq/hp between the different dual plane manifolds? I am also looking at used parts for cost savings.

On a side note, will my Vortec heads be suitable for a 383 build or would I be much better suited with an aftermarket set? If aftermarket would be better, how much better on tq/hp would they be? This might dictate how much time and money I sink into a set of used heads. Thanks.

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 02-09-2013, 12:09 PM
F-BIRD'88's Avatar
Yada Yada Yada
 
Last photo:
Join Date: Oct 2005
Location: Ontario, Canada
Posts: 9,284
Wiki Edits: 0

Thanks: 5
Thanked 399 Times in 393 Posts
Increasing the power of this heavy work truck will not make your life any better.

daily driver/towing more engine power will not get you there any sooner or any better.

but it will cost more.

Just leave the hood shut and drive it. You will get there.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 02-09-2013, 12:13 PM
Registered User
 
Join Date: Jul 2011
Location: Missouri
Posts: 80
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
I beg to differ, but that's OK.
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 02-09-2013, 01:17 PM
vinniekq2's Avatar
Registered User
 
Join Date: Jun 2012
Location: BC,Canada
Age: 56
Posts: 8,639
Wiki Edits: 0

Thanks: 364
Thanked 858 Times in 820 Posts
decide what you need,buy parts for that,towing will require(you fill in the blanks) build that once.Budget is not a word to use,decide what you need and buy the best parts to do that
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 02-09-2013, 01:56 PM
Registered User
 
Join Date: Jul 2011
Location: Missouri
Posts: 80
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
My main question, more or less, is if the Performer RPM is a bad choice for a stock 350 with vortec heads at my vehicles weight and cruise rpm and would it lend itself to future upgrades or will a plain jane performer or similar design do just as well for less money. If its a toss up, then fine. Was afraid the extended rpm range might be a little too high but the dyno sheets from Edelbrock don't indicate that quite so much. Nothing wrong with looking for real world experience. I'm doing the vortec upgrade and need an intake. Things may change before I go bigger.
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 02-09-2013, 02:31 PM
vinniekq2's Avatar
Registered User
 
Join Date: Jun 2012
Location: BC,Canada
Age: 56
Posts: 8,639
Wiki Edits: 0

Thanks: 364
Thanked 858 Times in 820 Posts
rpm requirements are more air at higher RPMs, a bigger engine needs more air and even more air at high RPMs? how much power do you need,from what size engine?Its just math,,,, bigger engine can supply the greater power,,,sooner

what do you need?what are you hauling,,,,?maybe you need a turbo diesel?
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 02-09-2013, 02:58 PM
F-BIRD'88's Avatar
Yada Yada Yada
 
Last photo:
Join Date: Oct 2005
Location: Ontario, Canada
Posts: 9,284
Wiki Edits: 0

Thanks: 5
Thanked 399 Times in 393 Posts
Let me help you with a little towing power ///efficiency math and basic economics.

You can only tow so fast. If you exceed the posted speed limit your luck will run out sooner rather than latter and will not et where you are going any faster.

you need x horspower to climb a hill while pulling a load at the posted speed limit.
let x be EG: 150hp...
Your stock engine creates well in excess of the required 150hp to get up teh steepest hill ( it creates 250hp)
reguardless of how or how much you hot rod the engine it still requires you create 150hp to get up the hill.
and you already have well in excess of the required engine power.

you can still only climb the hill at the practical speed limit. or it will cost you more money to get there.
A LOT MORE IF YOU GET A TICKET doing it.

creating X amount of horsepower requires burning a fixed amount of fuel. reguardless of the engine design.
All you will achieve is burning more fuel to get there You will not get there better or faster.

You only need enough max horsepower to get up the steepest hill with the load at a practical speed.
any more is not better. TOWING IS NOT THE SAME AS RACING.
Going faster while towing is not better and having more horsepower is not like having more money or more food or a bigger noodle.

you will not get there any faster or better or save fuel by hot rodding the enigne in your truck. And the girls will not like you any better. But you will be poorer as a result.

Last edited by F-BIRD'88; 02-09-2013 at 03:04 PM.
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:
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
Help 383-389 Vortec Motor Build this winter Impala5967 Hotrodding Basics 6 09-20-2011 04:06 PM
383 2 bolt 1 PC vortec build. sjkonyndyk Engine 2 11-14-2010 06:50 PM
Vortec 383 Build jake_arcticcat Engine 4 06-05-2008 08:19 AM
Vortec intake Question Chevyboy_0 Engine 7 04-30-2008 07:52 PM
How would you build a 383? A 355? Vortec or package deal? Adrenaline_Fiend Engine 5 04-29-2003 08:58 PM


All times are GMT -6. The time now is 09:13 AM.


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.