5.0L General DiscussionThis section is for non-tech specific information pertaining to 5.0L Mustangs.
Welcome to Mustang Forums!
Welcome to Mustang Forums.
You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!
So im going for the gt40 set up. I got a quick question. Im putting gt40 heads, gt40 upper and lower with roller rockers. Could i keep my injectors and just bump up the fuel pressure since i have to get a bigger fuelnpump and i have to get a fuel pressure regulator? Or would 24 be the way to go? And this is is list of what i will need
It depends if you're going pass 300HP, that's key 19# injectors aren't made to sustain per say 350HP. My recommendation? Yes you will need to step up from the 19lbs injectors. And the mods you listed it seems you're passed the limit for 19# and their cycle is gonna be harsh with what you got coming. You will also need a tune and that will also increase your HP rating. You're looking at 300HP easy when you're finished with those mods.
Someone else can correct me if I am wrong, but eh I feel what I am saying is pretty spot on. My car has upgraded injectors the factory ones weren't enough.
Oh I didnt Expect that much. I appreciate the help. Another concern is, Someone is selling me ford motorsport roller rockers but 1.6 ratio for the exhaust and 1.7 for the intake. They are used. I heard about the 1.6,1.7 variation but im not sure how efficient it really is. And if i where to get those roller rockers, i was thinking about some comp cam valve springs (dual Springs) with ford racing lifters and some comp cam pushrods. STOCK CAM though. I dont wish to change my cam. Would you rather go with the used ford motorsport roller rockers? or some new harland sharp roller rockers at a 1.6 ratio?
With the mods you have listed no you do not need to change the fuel injectors to 24lb. Your 19s will be about maxed out but they will hold. If you swap to 24s it would be a good idea to get a Cobra ecu as it is perfectly calibrated for that setup.
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