Big Block Build - 396 - Hot Rod Forum : Hotrodders Bulletin Board -- 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 08-02-2002, 03:24 AM
Registered User
Join Date: Jul 2002
Location: Texas
Posts: 1
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Wink Big Block Build - 396

I am looking for some help. I was hoping to build the snot out of my BB 396 and was hoping to find a build sheet that would save me from making some major mistakes. It is for a street car but I am looking for 450-500 hp. I know, this is pretty optimistic but one can dream. Any tips and ideas would be appreciated.

[ August 02, 2002: Message edited by: Jeff @ Texas ]</p>

Reply With Quote Quick reply to this message
Sponsored Links
  #2 (permalink)  
Old 08-04-2002, 04:09 AM
Barry.M's Avatar
Old Phart
Last wiki edit: How to identify a Ford V8
Last journal entry: 27 T Roadster project-For Sale
Last photo:
Join Date: Apr 2002
Location: S.A.Australia
Age: 58
Posts: 132
Wiki Edits: 3

Thanks: 0
Thanked 0 Times in 0 Posts

Hi Jeff. 450HP is a reasonable ask for a 396/402.
Fortuneately there have been quite a few magazine articles covering the 396 build-up over recent years. Considering that GM had a factory offering of 375 HP in the late 60's,you only need to look for 20%more to get you to the 450HP level. Good Heads,Inlet Manifold and Carb,plus the right cam combo. If it's for street use,stick to a Dual Plane,Weiand or Edelbrock,Early High Po. small port heads,closed chamber types as used on pre-smog motors OR very early 454 type open chamber heads with the small ports,but NOT the peanut size ports !!. Naturally if you use open chamber type heads you'll need to use the correct type pistons to bring compression back up. Compression should be in the 9.5-10.5 range. Carb. will need to flow about 750-800cfm. Cam choice is wide open. Don't know much about Roller Cams,but in a regular Hydraulic or Solid Lifter you'll need to have .550 -.570 lift and arround 280 plus advertised duration . Naturally you will need a Good Ignition and1 3/4" Headers. Now if you've got the bucks to spend,buy some Merlin Heads with the small ports and large valves (2.19/1.88), these will save you time in the long run and you'll pick up some extra HP. Looking for that 500 HP figure will be a lot tougher and not very street friendly. Hope this helps you out,
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 07-31-2012, 11:15 PM
Registered User
Join Date: Mar 2010
Location: san diego
Posts: 6
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
baby rat 396/ 427. 450 hp. should be easy

if one can get 500 hp out of a 383 can get 500 hp out of a 396. are bbc's not good motors. on numbers a lone a 3.76 bbc crank is just about the same as a 3.75 crank in a 383, the difference being bore size. how do builders get 600 hp out of a 400 sbc and can't build a bbc to that same hp level of the same size motor? the idea is that the sbc is lighter so the car would be faster in the end. i'm planning on building a 427 bbc, the craze is just build a 496 or 540 now a days. are they really the same kind of power. getting 6 ponies out of a 540 vs 6 ponies out of a 396/ 427. one is made from torque alone and one is made from rpms from torque. it's easier to get 600 hp out of a 540 it's less wear on the valve train...but i still want a high winding baby rat. anyways...355's make 400 hp plus now. and that's with a 3.48 crank. with a bigger bore and bigger crank i don't see any problems making 450 hp as long as the correct parts are put together. just a few of my thoughts.
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 08-01-2012, 05:53 AM's Avatar
Last photo:
Join Date: May 2002
Location: Holly, michigan
Posts: 8,991
Wiki Edits: 0

Thanks: 88
Thanked 541 Times in 470 Posts
Very old thread..

Biggest problem getting power fron 396 is combination, as mentioned. Heads are always a problem. Most of the modern stuff has way too big chambers. Pistons are also a problem.. Not much available.

If you get tired of the engine. You can't sell it. Few people want small big blocks. I've had a few in inventory and had no calls on them in years..
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 08:24 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 1999 - 2012. All Rights Reserved.