Go Back   Ford F150 Forum - Community of Ford Truck Fans > Pre-1997 F150 > 1987 - 1996 F150 > Drivetrain
Sign in using an external account
Register Forgot Password?


Reply
 
 
 
 
Thread Tools Search this Thread Display Modes
Old 03-25-2014, 09:50 PM   #1
Junior Member
 
Join Date: Mar 2014
Posts: 4
Mentioned: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Default 5.0 gt40 build help!!

I have a 1989 xlt lariat that I am working on. IMCO 2.5" exhaust no cat. Short bed single cab truck. I wanted to give her some more power but not radically build it so I decided to get a set of cast iron gt40 heads with brand new trick flow springs off of a 1993 cobra, low mileage (less than 80000) having them mildly ported and polished, just enough to let them breath better. Got some 1.7 ratio roller rockers for it. Stock cam. with the 1.7rr it will get me .472/.472 lift. Stock bottom end. the intake is going to be a 5.0 h.o. upper and lower intake from a 1992 mustang gt motor. I have the intake, MAF, wiring harness, ecu, pretty much everything to just "plug and play." I thought of this the other day just after sending the heads and intake to the machine shop to be ported, polished, and port matched. My question is The mustang ecu sending fuel to the injectors is going in the 351w and h.o. firing order.. and I'm using the stock non ho cam and bottom end... Will there be a problem long term or short term with running standard 1-5-4-2-6-3-7-8 firing order with the newer computer pushing fuel to the 1-3-7-2-6-5-4-8 order? Thanks guys, any opinion helps
RogersZ89 is offline   Reply With Quote
Old 03-27-2014, 10:23 PM   #2
Member
5 Year Member
 
Join Date: Dec 2007
Location: under the hood
Posts: 92
Mentioned: 0 Post(s)
Thanks: 0
Thanked 1 Time in 1 Post
Feedback Score: 0 reviews
Default

just swap the ho cam into your motor. and the truck intake is better than the mustang one and has longer runners (better for bottom end power)
__________________
1991 F150- 5.0, k&n, full lentgh headers, custom 2.5 exhuast, summit welded mufflers, xpipe, shaved block&heads, edelbrock intake manifold, UDP
nosebleed is offline   Reply With Quote
Old 03-28-2014, 11:22 AM   #3
Junior Member
 
Join Date: Mar 2014
Posts: 4
Mentioned: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Default

The ho cam is for higher end power though. Wouldn't that defeat the purpose of using the truck intake?
RogersZ89 is offline   Reply With Quote
Old 03-28-2014, 01:36 PM   #4
Junior Member
 
Join Date: Mar 2014
Posts: 4
Mentioned: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Default

I'm going with the mustang harness and ecu because it is MAF and the ole 89 is speed density. The intake came with it so I thought might as well use what I bought haha
RogersZ89 is offline   Reply With Quote
Old 03-28-2014, 08:17 PM   #5
Martin
 
Join Date: Jan 2011
Location: Lehi, Utah
Posts: 1,528
Mentioned: 0 Post(s)
Thanks: 2
Thanked 89 Times in 68 Posts
Feedback Score: 0 reviews
Default

Easiest way to go is use HO firing order cam, lot less hassle in the long run
sdmartin65 is online now   Reply With Quote
Old 03-28-2014, 08:22 PM   #6
Martin
 
Join Date: Jan 2011
Location: Lehi, Utah
Posts: 1,528
Mentioned: 0 Post(s)
Thanks: 2
Thanked 89 Times in 68 Posts
Feedback Score: 0 reviews
Default

If the block will accept them it would be a great time to put a roller cam in. You'd need new lifters regardless.
sdmartin65 is online now   Reply With Quote
Old 03-30-2014, 09:23 PM   #7
Junior Member
 
Join Date: Mar 2014
Posts: 4
Mentioned: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Default

I think I'm interested in a cam now. Hate to say it but I'm gonna get one. What do you all think of the CL35-600-4 comp cam. it is a 351w cam that has pretty good range from low/mid to high. It'll have around .520/.505 lift. My trick flow springs and stock bottom end non ho block should be fine with that cam. Close to being too radical in my opinion, but for a weekend toy and occasionally driver to work, what do you think of the comp cams thumpr? I'm sticking to a flat tappet cam because I don't want to switch to the roller cam. I'm almost def going to go with comp cam but any suggestions? I don't want an alphabet cam so please don't suggest the e303.
RogersZ89 is offline   Reply With Quote
Old 03-30-2014, 09:23 PM
 
 
 
Reply

Tags
5.0, engine build, gt40, wiring harness

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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 Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Join F150 Forum

 

The Mustang Source
All times are GMT -4. The time now is 12:00 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Copyright 2006 - 20011 F150forum.com
This site is in no way affiliated with the Ford Motor Company.