454 blower set up - 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> Hotrodding Basics
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 05-22-2012, 02:58 PM
Registered User
 
Join Date: Feb 2011
Location: Maine
Posts: 25
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
454 blower set up

I have a 1990 chev k1500, 6" Rough Country lift, 35's this summer, recently bought a 454 1ton 1992 Chevy 4x4 for $750, its rotten, but runs like the day it came out if the dealer. I am taking the engine, tranny, rear end, transfer case out of it and putting it in my 1500. My 1500 is clean, no rust, re-painted and under coated(hence why I'm swapping) I have always liked the look and sound of blowers, I've read a bunch of posts about blowing 454's, I was wondering if anyone could help me with the "right" build for my truck, I want it streetable and daily driverable(I know it's not a word) but I can still tow and go mudding occasionally. I also drive this truck in the winter as my primary vehicle in winter. I know with power comes responsibility, and I don't drive stupid. I am a mechanic, but am not familiar with bbc's or blowers(I'm 19) but I have a very good machine shop that my shop deals with, and my father will be helping me along with this. Any and all help will be appreciated, even links to different forums for me to poke around in.

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 05-22-2012, 05:48 PM
F-BIRD'88's Avatar
Yada Yada Yada
 
Last photo:
Join Date: Oct 2005
Location: Ontario, Canada
Posts: 9,448
Wiki Edits: 0

Thanks: 2
Thanked 320 Times in 317 Posts
You can build a very powerfull and reliable budget blower motor using the stock 454 pretty much as is with a few upgrades.
The Weiand 177 BBC blower kit is sweet for this.
Keep the boost reasonable 5-7psi.

Get a cam with around 230in -237ex deg 112-114LSA .500" lift
Comp makes a Magnum cam for this.
Flat tappet HYD

factory hyd roller use The GMPP hyd roller with 224 duration and wide LSA .500" lift

solid flat tappet use the GM (Crane) LS-6 muscle car cam
244 244 .520 .520 114LSA

All these cams are blower friendly and need new hi perf valve springs.

get a 750 or 850 carb. headers and 2.5" duals.
The carb will need a few mods and some retuning
The trucks fuel system will need upgradding.

May want to convert the heads to a adjustable valve train
or swap on some 781 oval port heads.

5-7psi boost max and 30ish spark advance under boost
and it will go like hell and last.
use the best pump gas available.
The key is not getting crazy with boost or timing under boost.
It will make crazy power.

Does this motor have a flat tappet cam or a factory roller cam in it now?
Does this motor have the Gen V peanut port heads with non adjustable valvetrain.?
One of the biggest mistakes made with tall 35" tires is lack of gear ratio.

Last edited by F-BIRD'88; 05-22-2012 at 05:57 PM.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 05-22-2012, 06:42 PM
Registered User
 
Join Date: Feb 2011
Location: Maine
Posts: 25
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Alright sweet. Thanks alot! Which pistons would you reccomend? I'll go with the Dough Thorley 2.5" headers. And the comp magnum cam(not sure if i can link other sites, but here goes, I appologize if I can't!) ( http://www.compperformancegroupstore...MARKIVCAMHFTBT ), 850 carb (what will I need to do to it?) and the 781 oval port heads. What injectors and fuel pump would you reccomend?
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 05-22-2012, 06:44 PM
Registered User
 
Join Date: Feb 2011
Location: Maine
Posts: 25
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
I honestly haven't taken the engine even out if the truck yet. I have alot on my plate at the moment. Yeah I'm swapping 4.11's in it to help the tranny, also, what tranny should I run? The omd in it with a 2200ish stahl and shift kit?
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 05-22-2012, 08:28 PM
Registered User
 
Join Date: Feb 2011
Location: Maine
Posts: 25
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Also, would a weiand 6-71 street blower be overkill? Or I'd just have to build stronger?
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 05-24-2012, 05:54 PM
11echo's Avatar
Old Guys Rule!...EVERYTHING!
 
Last photo:
Join Date: Jun 2003
Location: Bakersfield, CA
Age: 63
Posts: 467
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
The two things I'd do if I was you, check the crank to see if it's a steel or cast iron ...obviously steel is the way to go, IF your goal is to make serious HP's! The other issue is rod bolts, I'd replace the stock ones with an after the market set that are readily available ...ARP, Milodon, & etc. Stock rod bolts get abit "stretchy" in high RPMs. Good Luck ...BBC are fun!
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 05-24-2012, 08:56 PM
1971BB427's Avatar
Registered User
 

Last journal entry: Latest changes
Last photo:
Join Date: Dec 2010
Location: Portland
Posts: 1,413
Wiki Edits: 0

Thanks: 11
Thanked 208 Times in 179 Posts
[QUOTE=F-BIRD'88]
May want to convert the heads to a adjustable valve train
or swap on some 781 oval port heads.

QUOTE]


Just a quick question, as I thought I knew BBC's pretty well. When did they stop making BBC heads that had adjustable rocker arms?
Reply With Quote Quick reply to this message
  #8 (permalink)  
Old 05-25-2012, 08:15 AM
GT23T's Avatar
Registered User
 
Last photo:
Join Date: Jun 2010
Location: Texas
Posts: 53
Wiki Edits: 0

Thanks: 1
Thanked 0 Times in 0 Posts
You should look at the Blower Shops 250 blower. It's designed to fit under the hood and still give you the big blower look.

The Blower Shop 250 for BBC/
Reply With Quote Quick reply to this message
  #9 (permalink)  
Old 05-25-2012, 08:24 AM
35WINDOW's Avatar
Member
 

Last journal entry: Dash Mock-up
Last photo:
Join Date: Dec 2004
Location: utah
Age: 58
Posts: 1,389
Wiki Edits: 0

Thanks: 7
Thanked 18 Times in 17 Posts
Quote:
Originally Posted by 1971BB427
Just a quick question, as I thought I knew BBC's pretty well. When did they stop making BBC heads that had adjustable rocker arms?

I believe that change was made when the Gen V engines came out (1990 or so?)-maybe someone else knows better-
Reply With Quote Quick reply to this message
  #10 (permalink)  
Old 05-25-2012, 12:00 PM
Hot Rod Has Been
 
Last photo:
Join Date: Aug 2010
Location: Wisconsin
Age: 65
Posts: 187
Wiki Edits: 0

Thanks: 0
Thanked 6 Times in 5 Posts
I'm certainly no blower expert although I did research a lot of different scenarios before building my 354 Hemi with a 6-71.

First you have to decide what you want to accomplish. Do you want Saturday boulevard cruiser that makes noise, idles at 1200 rpm and generally isn't usable for a daily driver? Or do you want a vehicle with tons of low end grunt, decent fuel economy yet with enough HP to smoke a lot of your former friends... you have to decide that first.

Blown engines can be very docile and content in everyday traffic. A good cam along with the proper boost can give you the best of both worlds... tire shredding torque and reasonable economy... 15 to 17 MPG hwy numbers are not unheard of...

And they do not have to be expensive if you shop around, use eBay and attend some swap meets. I paid $20.00 for my core 6-71... took it off a 70's vintage Dodge truck. Rick Dean did the gas conversion for $285.00 plus parts... total was around $450.00. I bought a BBC drive kit with a new front cover from Dyer's Blower Service on an eBay auction for under $300.00.

I found a NOS Cragar intake at an old hot rod shop in Massachusetts... had been laying under the bench since the 50's... $225.00 plus the ride. Bought a couple vintage Cragar pop-off valves from former top fuel driver Darrell Gwinn.

All in I have under $1200.00 in my blower...ready to run.

I had George at Clay Smith Cams grind the cam to specs he and I agreed upon. He had me install it 4 degrees retarded to calm down the idle and give it more grunt and better economy. I have an 850 Edelbrock sitting on top the blower plate.

I put my big $$$ in Venolia pistons... they cost me $650.00 custom made to my deck height and desired compression ration (8-1)... stock replacements would have only been a few hundred dollars less. Venolia even called my machinist to verify the combustion CC's on my cam request... great service IMHO.

If you plan on running a good performing daily driver you can get away with cast pistons and crank... I have seen dozens of these over the years, in both SBC and BBC, give good reliable service. If you plan on pegging the tach to 7k on a regular basis you will need better parts.

You'll also need a good break-in oil when you reassemble that engine... and use the BEST oil you can find when you finally finish it. At a recent oil seminar I attended, the guy doing the event told me the oil company he works for found the engine that would give their oil the ultimate work-out was a BBC at 8500 rpm. If the oil kept that engine alive it would keep anything together...

Blown engines are fun... but your right foot will determine how much that fun will cost.

Last edited by Mojo56; 05-25-2012 at 12:09 PM.
Reply With Quote Quick reply to this message
  #11 (permalink)  
Old 06-11-2012, 05:46 PM
Registered User
 
Join Date: Feb 2011
Location: Maine
Posts: 25
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
I'm looking at headers, I can only find max collector diameter if 3" I wanted to run 3.5" full exhaust off of headers straight to Mufflers, NO cats. Could I get an adapter from 3" to 3.5"? Or do you guys think 3" would be enough? I plan on a Weiand 6-71 set up.
Reply With Quote Quick reply to this message

Recent Hotrodding Basics 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
Set timing on a '99 Chevy 454 ? moorwhine Engine 9 05-16-2012 05:08 PM
Blower motor set up questions Bad Rat Engine 6 11-17-2009 12:56 PM
how do i set valve lash setting on a 454 85 k5 mud truck Engine 3 06-04-2009 11:06 PM
new 454 set-up?! 1967chevelle454 Hotrodding Basics 3 02-06-2009 10:25 PM
Set timing big block blower motor street rodder 1937 Engine 1 10-21-2003 08:57 AM


All times are GMT -6. The time now is 04:29 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.