Best way to get over 400hp out of a Pontiac 400 - Page 2 - 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
  #16 (permalink)  
Old 03-19-2013, 09:07 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
Quote:
Originally Posted by MouseFink View Post
I raced my friend's 1967 L88 427 Corvette convertible., no radio, 4-speed with 4.56:1 gears at least a dozen times. I could never beat him, no matter how hard I tried. With 11" slicks, I could pull him two car lengths out of the hole but he was beside me within about 200 feet and ahead of me by two car length through the eyes. His '67 Corvette was rated by the factory at 430 HP and my 1969 Firebird 400 coupe had 450 HP at 6,500 RPM.

How could that be?

Reason:
The 1967 L88 Corvette was rated 430 HP at 5,600 RPM (for government purposes)
The 1967 L88 Corvette had 560 HP at 6,600 RPM.
His L88 Corvette could clock 11.5 ET consistently with street tires and side pipes
(Only 2 of the 20 1967 L88 Corvettes made with side pipes)
And a thousand or so less pounds to carry around. The gto is alot heavier than a vette even in 67 the vette was not a heavy car and with 500+ ponnies I bet it did run good. The gto is very heavy when compared they were about 3800 pounds on the title and usally more on race day.

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #17 (permalink)  
Old 03-19-2013, 09:26 AM
Registered User
 
Join Date: Jun 2010
Location: TX
Posts: 1,159
Wiki Edits: 0

Thanks: 0
Thanked 101 Times in 93 Posts
Put an identical engine and drive line in a GTO and in a Firebird 400, the 'Firebird 400 will be a second quicker. That includes a GTO with the overrated Ram Air V engine.
Reply With Quote Quick reply to this message
  #18 (permalink)  
Old 03-19-2013, 09:31 AM
Faith - Respect - Trust
 
Last photo:
Join Date: Sep 2012
Location: Ontario
Age: 58
Posts: 3,508
Wiki Edits: 0

Thanks: 192
Thanked 621 Times in 561 Posts
Quote:
Originally Posted by Mr. P-Body View Post
Many ways to "skin this cat", so be careful. There are many self-proclaimed "experts" regarding the Pontiac, and some actually ARE. Some are not. I agree, Butler Performance is an excellent shop. It's not the ONLY good one, though... And beware the "builder" that doesn't HAVE a shop... There are few of those out there, too. Contrary to popular belief, the guy that shoves the pistons in the holes is not necessarily "the builder". Engine building is a "trade" not an operation. The "operation" often confused is "assembly". The "builder" is the one that measures everything, makes determinations for what's needed, and decides what modifications are called for for a given application.

Jim
Amen...Thanks Jim
Reply With Quote Quick reply to this message
  #19 (permalink)  
Old 03-19-2013, 11:02 AM
Registered User
 
Last photo:
Join Date: Mar 2011
Posts: 129
Wiki Edits: 0

Thanks: 10
Thanked 7 Times in 7 Posts
By the way, Jim (Mr Peabody) is one of the expert Pontiac engine builders mentioned in Jim Hands book (Pontiac bible).. Besides that, I know a few guys who had motors built by him and they are very satisfied...
Reply With Quote Quick reply to this message
  #20 (permalink)  
Old 03-19-2013, 11:24 AM
Faith - Respect - Trust
 
Last photo:
Join Date: Sep 2012
Location: Ontario
Age: 58
Posts: 3,508
Wiki Edits: 0

Thanks: 192
Thanked 621 Times in 561 Posts
Quote:
Originally Posted by Bonneville462 View Post
By the way, Jim (Mr Peabody) is one of the expert Pontiac engine builders mentioned in Jim Hands book (Pontiac bible).. Besides that, I know a few guys who had motors built by him and they are very satisfied...
I for one did not know that, this would help explain why I enjoy reading his posts, being a big Pontiac fan and all. I thought I knew a fair amount about engines and especially Pontiac engines. I joined this site several months ago to learn and I found out I knew a lot less than I thought I did.

Thanks

Ray
Reply With Quote Quick reply to this message
  #21 (permalink)  
Old 03-19-2013, 11:24 AM
Registered User
 
Last photo:
Join Date: Jun 2010
Location: Syracuse, NY
Posts: 2,084
Wiki Edits: 0

Thanks: 378
Thanked 206 Times in 185 Posts
"Gee! Thanks Mr. Peabody!" - Sherman

Sorry; I had to. We do a lot of 4 speeds for Pontiac guys; and their cams are a lot more mild than I was normally accustomed to. KRE, Butler and Jim Taylor along with Mr P-body all seem to have similar recommendations FWIW. Most engine assemblers can build a Pontiac, AMC, Briggs and Stratton...whatever; but when you get advice from a specialist engine builder; it makes a difference. The devil really IS in the details.
Reply With Quote Quick reply to this message
  #22 (permalink)  
Old 03-19-2013, 11:25 AM
Registered User
 
Last photo:
Join Date: Jun 2010
Location: Syracuse, NY
Posts: 2,084
Wiki Edits: 0

Thanks: 378
Thanked 206 Times in 185 Posts
argh double post
Reply With Quote Quick reply to this message
  #23 (permalink)  
Old 03-19-2013, 12:26 PM
Registered User
 
Join Date: Jun 2010
Location: TX
Posts: 1,159
Wiki Edits: 0

Thanks: 0
Thanked 101 Times in 93 Posts
In 1972, I sold the '69 Firebird 400 and I bought a clean '55 Chevy 210 2-door with a 6-cylinder engine. Still hung up on Pontiac engines, i decided to replace the stovebolt six and install a stock 1970 455 Pontiac engine in the '55 Chevy. I used 2-Holley List 4224 660 CFM center-squirters on a OFFY 360* manifold, '67 GTO headers, a 1963 Muncie 4-speed, custom made drive shaft, Zoom clutch and pressure plate, Lakewood steel bell housing, battery went in the trunk, and every thing fit perfectly. I also removed the rear seat and carpeted that area, "Two-Lane Black Top" style.

The third time out, I broke the rear U-joint and spun the axle before I realized that I needed to reinforce the spring perches. I could not cool the big Pontiac engine with the OE '55 Chevy low pressure radiator so I had a salvage yard '65 Oldsmobile 4-tube radiator sectioned using the '55 Chevy upper and lower radiator tanks and that solved the overheating problem.

The '55 Chevy ran mid-13s, stock cam, closed exhaust, G70-14 Goodyear Polyglas GT tires and the OE '55 Chevy 3.36:1 rear end. I broke the rear end one Sunday at Waul Drag Strip (concrete with lots of bite) near San Angelo TX, and broke another rear end practicing a launch in front of our apartment. Fortunately, in the 1970s, the salvage yards were full of '55-'64 rear ends, but no Positractions. Sadly, the Waul (Wall) Drag Strip, lately known as San Angelo Drag Way, closed in 2010. It was a old abandoned concrete air strip without a shade tree within 60 miles. .

I found a '57 Pontiac axle housing with a 4.10:1 Safe-T-Track third member at Hot Rod Exchange in Dallas TX. I broke the old '63 Muncie 4-speed transmission before I could purchase and install the '57 Pontiac axle. In 1975, I sold the '55 Chevy for $1200, including the broken transmission .

Last edited by MouseFink; 03-19-2013 at 12:50 PM.
Reply With Quote Quick reply to this message
  #24 (permalink)  
Old 03-19-2013, 12:35 PM
spinn's Avatar
Fought beside and with you 92'
 

Last journal entry: This makes a huge difference
Last photo:
Join Date: Oct 2004
Location: midwest
Posts: 2,382
Wiki Edits: 0

Thanks: 11
Thanked 78 Times in 76 Posts
Put another green plutonium pellet in the delorean's mr fusion, doc.
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
Pontiac 400 vs. Pontiac 455 chevyelc81 Engine 7 03-19-2011 07:31 PM
400 sbc vs 400 pontiac Artemis Entreri Engine 52 09-08-2010 06:17 PM
Olds 455 or pontiac 400/400 handymann3 Engine 48 02-03-2010 03:59 PM
pontiac 400 or chevy 400 47chevrolet Engine 2 02-02-2007 02:08 PM
1986 pontiac acaidian with a pontiac 400 mazmanian Engine 2 07-30-2005 01:35 PM


All times are GMT -6. The time now is 08:59 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.