Go Back   Ford Truck Enthusiasts Forums > Performance, Engines & Troubleshooting > Small Block V8 (221, 260, 289, 5.0/302, 5.8/351W)
Sign in using an external account
Register Forgot Password?


Reply
 
 
 
 
LinkBack Thread Tools Search this Thread
  #16  
Old 08-29-2007, 11:47 PM
Mr. M's Avatar
Mr. M Mr. M is offline
Elder User
 
Join Date: Oct 2006
Location: Redmond, WA
Posts: 843
Mr. M is starting off with a positive reputation.
Certainly no glaring problems, but some quick re-directions might help you attain that goal with minimal coin increases.

Quote:
Originally Posted by robprime
upper. Maybe do 24# injectors and an adjustable fuel pressure regulator, with a slightly larger throttle body.
I think you'd be hardpressed to push the limits of the 19# injectors. Without aftermarket tuning software and/or a chip the 24#'ers would not be worth the trouble. With a properly set up adjustable FPR and 19# injectors, you'd be good to 300+. I've set up a heavy breathing 331 (afr heads, cam, long tubes, trick flow intake) and was shocked when the aftermarket tuning chip and 24# injectors was matched with an adjustable FPR, stock 19#'ers and a good set of wideband o2 sensors to tune. Saved the guy a large chunk of dough when he returned the 24# injectors and the tuning chip and software. I felt like the numbnut recommending the upgrade, but certainly learned the 19# injectors were very competent.

Quote:
Originally Posted by robprime
I'm told the stock roller cam in this motor is rather good, especially with 1.7 rockers, tho I hear the 5.0 H.O. roller cam also works well.
If you're looking to make this truck fun to drive, and willing to dive into other mods, you might want to rethink the stock roller cam. Although it is an improvement over the older cams, it still leaves some to be desired.... you can have my old F4TE roller cam if you want!! But I think you'd be short changing yourself and that 351 build. I considered doing the same with my build to save some coin, but I'm very pleased with a more aggressive grind.

Decide on a set of heads: aftermarket, have your E7's worked over professionally, or the Gt40's. Then and only then, have your cam and springs picked out. Call up for tech help and get help with a custom grind or any of the off the shelf bump sticks.

I hope this helps... some!
Mike
__________________
94 F150 4x4 XLT-"Teal Mobile"-Fresh 306 9.5:1, built e7's 1.94in/1.60ex, custom cam, long tubes, OEM MAF, 4.10's, 4" lift, E4OD 225 rwhp - Dynojet- SAE
BMW E46 M3 -
"Track Rat"-TopasBlue on Cinnamon -3.2L 6spd,11.5:1 CR, JVT Headers/Borla Exhaust, RE pullies, ESS tune, 4.10's, GroundControl Coils, UUC Sways, Rotora 4 piston F&R BBK, 171 mph (closed track) 313 rwhp Dynojet-SAE- 12.88 107.4 mph
Reply With Quote
  #17  
Old 08-30-2007, 02:21 AM
robprime robprime is offline
Senior User
 
Join Date: Jul 2007
Location: The Redneck Riviera
Posts: 157
robprime is starting off with a positive reputation.
There's an idea, baddad. Port and shorten the 351 parts I already have, use the gt40p heads, and see where I end up at, though there's not much meat between the runners, maybe 1/4". As light as those pieces are, I'm sure there are voids there somewhere, tho. Decisions, decisions.


Click the image to open in full size.


I ran across this design on the web somewhere. It looks easy enough to build. Picture two of them, with 4 runners each. One set starting from a head and reaching across over the opposite valve cover to end in a 4 runner plenum. One on each side with the runners interlaced over the center of the motor, rather like ones fingers. A TB on each plenum (yes, the linkages would be a concern but doable). A hose from TB to a filter box, then down to a scoop mounted beside the radiator, on either side. Good ram air/cold air inlets there.

You could get some good, straight runner length like that, and it would be pretty cool looking. Couple of problem areas, tho. Like the distributor. Although Ford does make a distributorless ignition system for 4 cylinders and a couple of them might be scrounged from a junkyard and made to work. There are also aftermarket systems with individual coils for each cylinder, but I'll bet those are pricey.

With the dist. out of the way, an open tube design like that, with the runners arching gently up and over the valley would allow some airflow from the fan to blow through there, if set up properly, keeping those runners relatively cool. Might need to add a light heat shield just below the runners over the valley, but maybe not.

I don't see the cooling system as much of a problem, add a tube from head to head, front and rear, plumb an inlet on the front tube and you're set, theoretically. I'd have to look at the coolant flow pattern of the engine in greater detail to be sure.

Efi engine controls would be a major concern. Dividing the engine in half like that would require two oxy sensors and two mass air meters. Perhaps smallish ones could be used if a certain amount of airflow is needed for accuracy. Maybe a couple from Ford V6's or something. I've actually thought about contacting the MegaSquirt guys to see if their system might be adaptable to such a setup.

But, these are just some thoughts off the top of my head. You guys got me started when you mentioned fabbing stuff. It's not my fault.

Rob
__________________
'92 FlareSide, '92 5.8/E4OD/8.8" 3.55 LS/2wd, RV cam, longtubes, duals, cold air, A/C, Cruise. About 4500 lbs.
'85 Ranger, '95 5.8/T5/8.8" 3.73 LS/2wd w/discs, GT40P heads, E303 cam, 1.7 rockers, custom longtubes, duals, cold air. About 3100 lbs
Reply With Quote
  #18  
Old 08-30-2007, 06:50 AM
baddad457 baddad457 is offline
Post Fiend
 
Join Date: May 2003
Location: south louisiana
Posts: 6,734
baddad457 has a very good reputation on FTE.baddad457 has a very good reputation on FTE.baddad457 has a very good reputation on FTE.
Quote:
Originally Posted by Mr. M
If you're looking to make this truck fun to drive, and willing to dive into other mods, you might want to rethink the stock roller cam. Although it is an improvement over the older cams, it still leaves some to be desired.... you can have my old F4TE roller cam if you want!!
Mike
A roller 351 will have the F4TE cam in it already.
__________________
89 Ranger supercab-- 302-4bbl-- 4 speed 68 Mercury Monterey 390 4 bbl C-6 77 F100 400M C-6 67 Mustang fastback 427 2-4
Reply With Quote
  #19  
Old 08-30-2007, 10:04 AM
Mr. M's Avatar
Mr. M Mr. M is offline
Elder User
 
Join Date: Oct 2006
Location: Redmond, WA
Posts: 843
Mr. M is starting off with a positive reputation.
Quote:
Originally Posted by baddad457
A roller 351 will have the F4TE cam in it already.
Yes, but my understanding was that this was a roller block project. As in, the cam choice was still in the air.
__________________
94 F150 4x4 XLT-"Teal Mobile"-Fresh 306 9.5:1, built e7's 1.94in/1.60ex, custom cam, long tubes, OEM MAF, 4.10's, 4" lift, E4OD 225 rwhp - Dynojet- SAE
BMW E46 M3 -
"Track Rat"-TopasBlue on Cinnamon -3.2L 6spd,11.5:1 CR, JVT Headers/Borla Exhaust, RE pullies, ESS tune, 4.10's, GroundControl Coils, UUC Sways, Rotora 4 piston F&R BBK, 171 mph (closed track) 313 rwhp Dynojet-SAE- 12.88 107.4 mph
Reply With Quote
  #20  
Old 10-14-2007, 05:02 PM
IHguy IHguy is offline
Freshman User
 
Join Date: Sep 2004
Posts: 29
IHguy is starting off with a positive reputation.
Quote:
Originally Posted by Conanski
Concerning your other questions...
There is an adapter to put a 5.0HO upper on a 5.8 lower, but that intake is restritive on a 5.0 with some mild mods, so I don't see it helping a 351.
The 5.0 truck intake actually has much larger runners than the 5.8, same length but bigger cross section.. me thinks Ford goofed with the castings and got them reversed. A 5.0 upper won't seal with the 5.8 lower, and it's pointless anyway, runners will be no shorter and airflow will be a mess. One guy here dyno'd a 5.0HO motor with both the 5.0 truck intake and the HO intake and the truck intake made more HP.. would seem to indicate it flows better.

Instead of starting a new thread that pertains to some of the same issues, I decided to drag this old thread out of retirement so please bear with me. I also would like to get some additional power out of my doggy roller 351W. In the post I quoted, you said that a 5.0 upper won't seal with a 5.8 lower. Are you talking about a 5.0HO or 5.0 truck upper? I was wondering if a 5.0 truck upper will bolt on to a 5.8 lower, my thinking being is that I could port the lower to match the 5.0 truck upper if it will bolt on. Any thoughts? Thanks.
Reply With Quote
  #21  
Old 10-15-2007, 05:46 AM
s1120's Avatar
s1120 s1120 is offline
Senior User
 
Join Date: May 2003
Posts: 281
s1120 is starting off with a positive reputation.
Quote:
Originally Posted by IHguy
Instead of starting a new thread that pertains to some of the same issues, I decided to drag this old thread out of retirement so please bear with me. I also would like to get some additional power out of my doggy roller 351W. In the post I quoted, you said that a 5.0 upper won't seal with a 5.8 lower. Are you talking about a 5.0HO or 5.0 truck upper? I was wondering if a 5.0 truck upper will bolt on to a 5.8 lower, my thinking being is that I could port the lower to match the 5.0 truck upper if it will bolt on. Any thoughts? Thanks.
No. The ports are TOTALY diferent. Not going to work. There are 5.8 intakes out there. Ebrok makes a truck intake thats a lot better then the stock 5.8 one. You can also look for a used intake off of a lighting. They had a gt40 style intake on a 5.8. Also there are many aftermarket intakes for the Mustang 5.0 world that you can get a 5.8 lower for.
__________________
Paul B

95 Bronco, e40d,5.0HO shortblock, early 351 heads, ported w/1.94/1.60 valves, Crane 2030 cam, shorty headers, homemade Ypipe, and flowmaster cat back[for now]
Reply With Quote
  #22  
Old 10-15-2007, 09:44 PM
kellar kellar is offline
Senior User
 
Join Date: Jan 2004
Posts: 207
kellar is starting off with a positive reputation.
I am also interested in modifying the truck 5.8 intake. I am on a tight budget for my 351 mustang project. Rather than buying an expensive intake I am just using a EFI truck lower and buying the $100 adapter to run the 5.0 HO upper. I will be running C9TE heads (69 302 with 58cc chambers) with mild port work and depending on cost may have larger valves installed. I also have a B303 cam and 1.7 rockers. I would like to have 300+ hp so I am looking for help and advice on porting the intake for maximum airflow.
Reply With Quote
Old 10-15-2007, 09:44 PM
 
 
 
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Plenum observation & PCV relocation question lmd91343 1987 - 1996 F150 & Larger F-Series Trucks 6 02-26-2008 09:53 AM
Lightning GT40 upper intake? Jrock909 Small Block V8 (221, 260, 289, 5.0/302, 5.8/351W) 10 09-20-2007 05:38 AM
Is it worth porting a 5.0 truck intake? Tech-man Fuel Injection, Carburetion & Fuel System 9 03-08-2006 07:20 AM
5.8 intake wows.....pathetic runner size Da Mother Ship Small Block V8 (221, 260, 289, 5.0/302, 5.8/351W) 9 08-21-2004 09:33 PM
351 Buildup Ryan356 Small Block V8 (221, 260, 289, 5.0/302, 5.8/351W) 31 09-09-2001 04:18 PM


Go Back   Ford Truck Enthusiasts Forums > Performance, Engines & Troubleshooting > Small Block V8 (221, 260, 289, 5.0/302, 5.8/351W)

Tags
4runner, 50, 58, 85, distributorless, efi, flow, ford, fords, intake, plenum, trick, truck, upgrade, upper

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not 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 On
Trackbacks are On
Pingbacks are On
Refbacks are On

Forum Jump


Participate In The Forums

Create new posts and participate in discussions. It's free!

Sign Up »





All times are GMT -5. The time now is 04:39 AM.


Powered by vBulletin® Version 3.8.7 AC1
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Advertising - Terms of Use - Privacy Statement - Jobs
This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. Ford® is a registered trademark of the Ford Motor Company.

vbulletin Admin Backup