HP estimate on 5.0L - Page 3 - 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
  #31 (permalink)  
Old 06-07-2004, 05:06 PM
deuce_454's Avatar
Member
 
Last photo:
Join Date: May 2002
Location: Copenhagen, Denmark
Age: 39
Posts: 1,000
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
no...

the upper manifold if a HO efi wont fit a lower gt 40. but the ports are the same in all the heads... even the gt40

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #32 (permalink)  
Old 06-07-2004, 05:12 PM
93_406cobra's Avatar
Member
 
Join Date: May 2004
Location: SC
Age: 37
Posts: 69
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
I thought I wrote the reply clear enough. Yes the heads are the same. But you have to get both the upper and lower intake for the GT-40 set up to work on your engine.
Reply With Quote Quick reply to this message
  #33 (permalink)  
Old 06-07-2004, 06:17 PM
deuce_454's Avatar
Member
 
Last photo:
Join Date: May 2002
Location: Copenhagen, Denmark
Age: 39
Posts: 1,000
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
ah... sorry what threw me was that he asked if changing to an edelbrock manifold and a carb would change power output... so i assumed that you claimed that a carb manifold somehow wouldn't fit
Reply With Quote Quick reply to this message
  #34 (permalink)  
Old 06-07-2004, 11:18 PM
40fordtruck_son's Avatar
Let the wheels of life roll on
 

Last journal entry: donor truck for hot rod hellion
Last photo:
Join Date: Jan 2004
Location: preston, Idaho
Age: 25
Posts: 77
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
so would hp go higher if i install those goodies? if so, whats a estamite of how much?
Reply With Quote Quick reply to this message
  #35 (permalink)  
Old 06-08-2004, 02:03 PM
phat48's Avatar
Low Phat
 

Last journal entry: Volksrod update
Last photo:
Join Date: Dec 2003
Location: Oregon
Age: 40
Posts: 12
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
I have a 5.0 H.O. EFI in my 48, and had to convert it to mass air instead of speed density in order to take advantage of upgrades to the engine. The conversion was spendy. I would imagine yours is speed density too. Unless you really want fuel injection, a carb is a good economical way to go.
Reply With Quote Quick reply to this message
  #36 (permalink)  
Old 06-08-2004, 03:27 PM
93_406cobra's Avatar
Member
 
Join Date: May 2004
Location: SC
Age: 37
Posts: 69
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
The GT-40 and a good cam and mass air setup maybe 20hp or so the heads are the main part of an engines performance. You will spend close to 2K for the whole setup. I would get a good set of heads and a good intake and run a carb for than amount of money.
Reply With Quote Quick reply to this message
  #37 (permalink)  
Old 06-08-2004, 07:57 PM
Grumpy
 
Last photo:
Join Date: Dec 2002
Location: D.C.
Posts: 1,447
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Quote:
Originally posted by killerformula
First of all, I think its pretty difficult to make torque without making about a similar amount of horsepower.
Then explain oldsmobile motors

hehehe. Example, 403 from factory, around 185HP, but near 320 ftlbs.

Oldsmobile spells torque


Also those numbers must be at the flywheel. I know its a ford, but like the stock olds numbers for say an 84 HO, 180hpx245ftlbs, those numbers were at the crank not the wheels, that car pushed about 7.8 in the 0-60 and about 17 sec. in the 1/4. If those numbers were at the wheels then you'd be looking at about a 16 sec 1/4 mile car. Those numbers are at the flywheel, unless someone points out a quote from ford stating those numbers are at the rear wheels.

Last edited by 87442lover; 06-08-2004 at 08:06 PM.
Reply With Quote Quick reply to this message
  #38 (permalink)  
Old 06-09-2004, 07:33 AM
killerformula's Avatar
Hotrodders.com Moderator
 
Last wiki edit: Carburetor
Last journal entry: Clean up
Last photo:
Join Date: Oct 2003
Location: Northeast
Age: 34
Posts: 3,485
Wiki Edits: 3

Thanks: 13
Thanked 27 Times in 18 Posts
Here's how I explain any motor, be it oldsmobile or otherwise. The fact that they make torque and not horsepower means they breathe well at low RPM (i.e. torque) but the valvetrain and cam suck for high RPM use (make sense considering what most of those motors were found in, big boat cars).

Here's the equation for torque and horsepower and how they are derived from one another.

Torque * RPM

Horsepower = ------------

5252

This is not a debatable item. It's the way it's done. Period.

Horsepower * 5252

Torque = -----------------

RPM

There u go!

K
Reply With Quote Quick reply to this message
  #39 (permalink)  
Old 06-09-2004, 08:45 AM
Grumpy
 
Last photo:
Join Date: Dec 2002
Location: D.C.
Posts: 1,447
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
971620 ft lbs of torque? Huh?
Reply With Quote Quick reply to this message
  #40 (permalink)  
Old 06-09-2004, 09:14 AM
killerformula's Avatar
Hotrodders.com Moderator
 
Last wiki edit: Carburetor
Last journal entry: Clean up
Last photo:
Join Date: Oct 2003
Location: Northeast
Age: 34
Posts: 3,485
Wiki Edits: 3

Thanks: 13
Thanked 27 Times in 18 Posts
post the horsepower and torqe numbers of the motor you're talking about, along with the RPMs at those events, and I'll run the eq for ya-

K
Reply With Quote Quick reply to this message
  #41 (permalink)  
Old 06-09-2004, 07:31 PM
40fordtruck_son's Avatar
Let the wheels of life roll on
 

Last journal entry: donor truck for hot rod hellion
Last photo:
Join Date: Jan 2004
Location: preston, Idaho
Age: 25
Posts: 77
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Quote:
Originally posted by 93_406cobra
The GT-40 and a good cam and mass air setup maybe 20hp or so the heads are the main part of an engines performance. You will spend close to 2K for the whole setup. I would get a good set of heads and a good intake and run a carb for than amount of money.
i ony got a grand to work with.

i found s/b hi perf. intake with edlebrock 4 barrel (factory rebuilt) 750 cfm for like $550. i cant find that D@mned magazine i saw it in.

how much would better heads be?

if i put in a better cam (I.E. high rise) how much would that do, and what would i have to change to not break stuff?
Reply With Quote Quick reply to this message
  #42 (permalink)  
Old 06-09-2004, 09:07 PM
killerformula's Avatar
Hotrodders.com Moderator
 
Last wiki edit: Carburetor
Last journal entry: Clean up
Last photo:
Join Date: Oct 2003
Location: Northeast
Age: 34
Posts: 3,485
Wiki Edits: 3

Thanks: 13
Thanked 27 Times in 18 Posts
what in the sam hell is a high rise cam?

K
Reply With Quote Quick reply to this message
  #43 (permalink)  
Old 06-09-2004, 10:11 PM
93_406cobra's Avatar
Member
 
Join Date: May 2004
Location: SC
Age: 37
Posts: 69
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
He means bigger cam.

A good set of heads will run you between 150 used and need work to 1600 for a set of good running alum. The intake I have always used is an Edelbrock F4B this is the same intake on the 65-66 Shelby's they don't have Shelby writen on them so you can pick one up at a swap meet for about 100-150 dollars then a good carb and your on your way. This could be worth great power gains over your current setup.
Reply With Quote Quick reply to this message
  #44 (permalink)  
Old 06-14-2004, 03:21 PM
40fordtruck_son's Avatar
Let the wheels of life roll on
 

Last journal entry: donor truck for hot rod hellion
Last photo:
Join Date: Jan 2004
Location: preston, Idaho
Age: 25
Posts: 77
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Quote:
Originally posted by killerformula
what in the sam hell is a high rise cam?

K
thats what we call it, i think the tech. name is called "long duration" its were the lobe of the cam is longer to hold the intake valve open longer. they sound awesome!!

'nother ?? i heard someone on here say their 302 has a 351's firing order, and they say it sounds awesome, is that possible? would it work?? would it increase or decrease HP??

thanks for the previous help, i really appreciate it!!
Reply With Quote Quick reply to this message
  #45 (permalink)  
Old 06-17-2004, 09:55 PM
Registered User
 
Join Date: Jun 2004
Location: minnesota
Age: 51
Posts: 2
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
I just got out of the 5.0 scene (5.0 EFI '65 Shelby Cobra) and those guys are the one's to talk to on tips to build one.

Any '87 and up Mustang 5.0 has better heads than your '85. The E7TE heads on everyday 5.0 Mustangs are almost give-a-way items. The GT-40 heads are found on '93-'95 Cobra Mustangs and '96-mid '97 Explorers and Mountainiers. The GT-40P heads are on mid '97-up 5.0 Explorers and Mountainiers. GT-40 and GT-40P heads are the prefered and fetch $250 and up used. All these will work with carb intakes.

Converting an older car to EFI is not a simple thing. Dealing with a wiring harness with what seams like 100's of wires and sensors can make you an asprin addict. It's the hard way to learn EFI.

When you pull the intake see if you have roller lifters, I'm not sure if for went to them in '85 or '86. If you have them get a good used one from a '87-up Mustang. They're about $10 on Ebay and they're a step up from the Lincoln cam and work well with a carb setup. Roller cams can be swapped from one set of lifters to another, unlike flat tappet cams.

The '87- early '92 Mustangs had forged pistons.

To change to C4 you may need to change the harmonic balancer. The later 302s had a 50 oz balance and the earlier were 28 oz. They need to match the flywheel.

If you have a serpitine belt and want V-belts you'll have to change the water pump and timing cover.

There's alot of information and inexspensive parts out there for the 5.0 Fords. They were to the '80s and '90s what the small block Chevy was to the '60s and '70s.

Hope this helps. Have fun.

69vert
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



All times are GMT -6. The time now is 08:35 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.