Stock 350 sbc 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 Advertise
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Engine
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 02-01-2018, 11:42 AM
Registered User
 
Join Date: Feb 2018
Posts: 11
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Stock 350 sbc build

Bare with me this is my first post. I have a stock 350 that I want to build. We got it from a family member who has multiple sitting in his shed. But we want to run the comp magnum 292 cam in it. We are going to match it with 64cc 200cc Heads. On top of that we are going to run a performer rpm intake with 650cc Edelbrock carb. We will also be running a 3000 stall with 4.10 posi.
My question is will this setup work well or end up being a dog? I am hoping 400hp. Any help will be greatly appreciated. Thanks in advance.

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 02-01-2018, 11:56 AM
BuzzLOL's Avatar
Cars, Trucks, Boats
 
Join Date: Dec 2012
Location: Toledo, N.W.Ohio, USA
Age: 72
Posts: 7,089
Wiki Edits: 0

Thanks: 18
Thanked 897 Times in 838 Posts
The comp Magnum 292 244/244 is a big cam and 3500 stall may be more appropriate, because that's about where it starts pulling hard... also it would like a Holley 750 carb. and Victor Jr./Victor intake better... setup valve springs for 3500 - 7000 RPMs... aim for 450 - 500 HP... 4.56 gear... sticky tires... all forged rotating assembly... 10.5 - 11.0:1... is this mainly for strip/race use?
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 02-01-2018, 12:17 PM
Registered User
 
Join Date: Apr 2007
Posts: 13,269
Wiki Edits: 0

Thanks: 368
Thanked 1,441 Times in 1,136 Posts
Quote:
Originally Posted by A.J. DeRousse View Post
Bare with me this is my first post. I have a stock 350 that I want to build. We got it from a family member who has multiple sitting in his shed. But we want to run the comp magnum 292 cam in it. We are going to match it with 64cc 200cc Heads. On top of that we are going to run a performer rpm intake with 650cc Edelbrock carb. We will also be running a 3000 stall with 4.10 posi.
My question is will this setup work well or end up being a dog? I am hoping 400hp. Any help will be greatly appreciated. Thanks in advance.
From the factory stock 350's come from 145 hp to 370 hp, needless to say the internals especially the short block are a lot different so you need to know what you're starting from. Since GM puts a lot of the compression ratio into the piston, simply changing heads may or may-not make much if any difference in compression ratio. Big and the bigger they are the more compression they need and the Comp 292 cam likes a lot of compression.

You can find out what the engine is by referencing the build code on the flat just below and ahead of the passenger side head. Other indicators are the casting numbers for the block, on the bellhousing flange, drivers side, and the heads, on the head facing up with the rocker cover removed.

Building an engine today is very different path than the good old days since compression is limited by fuel that is available. For the street this leads to shorter durations with more and faster lift rates wider LSAs and less ramp time leading to and away from the lobe. This vastly improves power especially with modern chamber heads. Getting 400 hp from a 350 today is easy with Vortec style heads, 9.5 to 1 compression, a Comp XE268H cam, Edlebrock Performer RPM intake, a 750 carb, 1.6 ratio roller rockers on 7/16ths studs, and 1-3/4 dia long tube headers with a 3 inch dia collector.

Bogie
Reply With Quote Quick reply to this message
 
  #4 (permalink)  
Old 02-01-2018, 04:25 PM
64nailhead's Avatar
Registered User
 
Join Date: Dec 2012
Location: Binghamton, NY
Posts: 4,039
Wiki Edits: 0

Thanks: 1,403
Thanked 1,012 Times in 836 Posts
Quote:
Originally Posted by A.J. DeRousse View Post
Bare with me this is my first post. I have a stock 350 that I want to build. We got it from a family member who has multiple sitting in his shed. But we want to run the comp magnum 292 cam in it. We are going to match it with 64cc 200cc Heads. On top of that we are going to run a performer rpm intake with 650cc Edelbrock carb. We will also be running a 3000 stall with 4.10 posi.
My question is will this setup work well or end up being a dog? I am hoping 400hp. Any help will be greatly appreciated. Thanks in advance.
The carb will not get it done - need larger. A better intake wouldn't hurt either Buzz's recommendation is a winner. Your 64cc 200cc heads ought to be aluminum and flow more than 250 cfm at .550 lift and you'll need darn near 11:1 compression to sneak by on pump gas. If the heads aren't aluminum, then you'll need to drop the compression.
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 02-01-2018, 04:32 PM
vinniekq2's Avatar
Registered User
 
Join Date: Jun 2012
Location: BC,Canada
Age: 62
Posts: 12,338
Wiki Edits: 0

Thanks: 874
Thanked 1,464 Times in 1,354 Posts
sounds like a less than good combo.

Don't ever build an engine around a camshaft!

Determine what you need to get your performance specs, The research the heads first! What rpm range do you need your engine to perform in. What exactly are you putting this engine into?
Your transmission and diff need to match the vehicle and its purpose. Start with the car,,,
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 02-02-2018, 11:24 AM
Registered User
 
Join Date: Feb 2018
Posts: 11
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
The engine will be going into a 83 c10. It has 700r4 transmission with a shift kit. The build is going to be for drag racing and maybe some trips to the drift pit. So what Iím hearing is definitely a bigger carb and a new intake woud be a necessity.
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 02-02-2018, 11:34 AM
vinniekq2's Avatar
Registered User
 
Join Date: Jun 2012
Location: BC,Canada
Age: 62
Posts: 12,338
Wiki Edits: 0

Thanks: 874
Thanked 1,464 Times in 1,354 Posts
If you seriously want to drift a pick up??? You need some torque at a lower rpm.

I would start with a minimum of a 540, turbo 400,3.9 to 4.1 gears

tune the engine to make peak power 5500 rpm or lower.
600 pounds torque of more.
drifting is more than slipping in corners, you want to blaze the tires
Reply With Quote Quick reply to this message
  #8 (permalink)  
Old 02-02-2018, 11:40 AM
Registered User
 
Join Date: Feb 2018
Posts: 11
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Quote:
Originally Posted by vinniekq2 View Post
If you seriously want to drift a pick up??? You need some torque at a lower rpm.

I would start with a minimum of a 540, turbo 400,3.9 to 4.1 gears

tune the engine to make peak power 5500 rpm or lower.
600 pounds torque of more.
drifting is more than slipping in corners, you want to blaze the tires
With that being said any recommendations on how to build a 350 that would be sufficient for that?
Reply With Quote Quick reply to this message
  #9 (permalink)  
Old 02-02-2018, 11:41 AM
ericnova72's Avatar
More for Less Racer
 
Join Date: Jan 2007
Location: S.W. Lower Michigan
Age: 53
Posts: 18,838
Wiki Edits: 0

Thanks: 306
Thanked 3,678 Times in 3,060 Posts
Quote:
Originally Posted by A.J. DeRousse View Post
The engine will be going into a 83 c10. It has 700r4 transmission with a shift kit. The build is going to be for drag racing and maybe some trips to the drift pit. So what Iím hearing is definitely a bigger carb and a new intake woud be a necessity.
Performer RPM will be the better intake considering your vehicle goals, but it does need the bigger carb.
Reply With Quote Quick reply to this message
  #10 (permalink)  
Old 02-02-2018, 11:43 AM
vinniekq2's Avatar
Registered User
 
Join Date: Jun 2012
Location: BC,Canada
Age: 62
Posts: 12,338
Wiki Edits: 0

Thanks: 874
Thanked 1,464 Times in 1,354 Posts
If you plan to drag race?
DETERMINE:
how fast you want to go
how much your truck weighs
How many horses you require


after that draft engine plan
Reply With Quote Quick reply to this message
  #11 (permalink)  
Old 02-02-2018, 11:45 AM
vinniekq2's Avatar
Registered User
 
Join Date: Jun 2012
Location: BC,Canada
Age: 62
Posts: 12,338
Wiki Edits: 0

Thanks: 874
Thanked 1,464 Times in 1,354 Posts
If you must use a 350 then you will need a supercharger/turbo
Reply With Quote Quick reply to this message
  #12 (permalink)  
Old 02-02-2018, 11:46 AM
Registered User
 
Join Date: Feb 2018
Posts: 11
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Quote:
Originally Posted by vinniekq2 View Post
If you plan to drag race?
DETERMINE:
how fast you want to go
how much your truck weighs
How many horses you require


after that draft engine plan
For drag racing I would like to run around high 12 low 13s. Not planning on a 10sec truck. The truck weighs 4000lbs currently. I will be gutting bed and some other misc items to cut it to 3500 eventually.
Reply With Quote Quick reply to this message
  #13 (permalink)  
Old 02-02-2018, 11:46 AM
ericnova72's Avatar
More for Less Racer
 
Join Date: Jan 2007
Location: S.W. Lower Michigan
Age: 53
Posts: 18,838
Wiki Edits: 0

Thanks: 306
Thanked 3,678 Times in 3,060 Posts
Quote:
Originally Posted by A.J. DeRousse View Post
With that being said any recommendations on how to build a 350 that would be sufficient for that?
Deciding straight off the bat to build it as a 383 stroker would be the first thing to do, forget all about a little 350 cube deal. cost won't be much different than rebuilding and remachining all the stock stuff, so it makes more sense to do a stroker.

The Comp 292 Magnum cam is not likely to be the best choice in either engine size for this job.
Reply With Quote Quick reply to this message
  #14 (permalink)  
Old 02-02-2018, 11:47 AM
Registered User
 
Join Date: Feb 2018
Posts: 11
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
A Supercharger or turbo is being planned for the future. But will be down the road in next year or so.
Reply With Quote Quick reply to this message
  #15 (permalink)  
Old 02-02-2018, 12:28 PM
BuzzLOL's Avatar
Cars, Trucks, Boats
 
Join Date: Dec 2012
Location: Toledo, N.W.Ohio, USA
Age: 72
Posts: 7,089
Wiki Edits: 0

Thanks: 18
Thanked 897 Times in 838 Posts
Quote:
Originally Posted by A.J. DeRousse View Post
The engine will be going into a 83 c10. It has 700r4 transmission with a shift kit. The build is going to be for drag racing and maybe some trips to the drift pit. So what I’m hearing is definitely a bigger carb and a new intake woud be a necessity.
You should also be hearing 'all forged internals' if the 350 you have doesn't already have that stuff... 1970 LT1 350's do... and 4:56 rear to drag race a full size truck... maybe even a 4.88 or 5.13 rear depending on rear tire diameter choice...

1.6, 1.65, or 1.7 rocker arms to get the lift higher on the Comp 292 cam...

IF stroking for a full size truck, consider a 400" stroker kit... 220 - 235 cc heads...
Reply With Quote Quick reply to this message

Tags
350 sbc build, 400 horsepower, cam, heads

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:
Insurance
Please select your insurance company (Optional)

Log-in



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
stock 2 barrel carb and pistons good for a 350 sbc build? Jkingof956 Engine 35 03-17-2014 11:54 AM
sbc 408 build.. looking for hp with a stock stroke razzor73 Engine 8 08-17-2011 08:41 AM
Stock 1974 sbc 350 build stoney 81ta Engine 7 06-21-2009 08:10 AM
Stock 1974 sbc 350 build stoney 81ta Engine 2 06-20-2009 06:50 PM
79 CJ 5: SBC or Stock Build Up? mav79 Engine 7 08-20-2003 10:28 PM


All times are GMT -6. The time now is 09:57 PM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2020, 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 © 2020 DragonByte Technologies Ltd.
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.