HP/TQ Numbers?
Thread Starter
|
Senior User
Joined: Jul 2004
Posts: 186
Likes: 0
HP/TQ Numbers?
I have a 91 EFI 460. Running the speed density system on it, so not going to aggressive with anything.
I'm in the middle of the installation on this cam
Cam: FF X4 256H-11
Intake: Exhaust:
Valve Lift .514 .514
Duration 256 262
Exhaust : Gibson Headers, with 3" pipe
Intake: K&N
Pre 71 Timing set
Currently I have no chip or anything for tuning. I will be getting one made soon, but from the set up above with a chip what HP/TQ range will I be looking at? Will I likely need to get a FPR, or go over on the injectors for proper tuning? Will I be able to tune my truck with oversized injectors, and a light port job and still have it run correctly?
I'm in the middle of the installation on this cam
Cam: FF X4 256H-11
Intake: Exhaust:
Valve Lift .514 .514
Duration 256 262
Exhaust : Gibson Headers, with 3" pipe
Intake: K&N
Pre 71 Timing set
Currently I have no chip or anything for tuning. I will be getting one made soon, but from the set up above with a chip what HP/TQ range will I be looking at? Will I likely need to get a FPR, or go over on the injectors for proper tuning? Will I be able to tune my truck with oversized injectors, and a light port job and still have it run correctly?
Senior User
Joined: Sep 2005
Posts: 371
Likes: 1
Can't give solid numbers for a chip with custom work. Only way to know for certain is to put it on a dyno, but generally you'll see a 10% horsepower gain and a 15% torque gain. Why are you looking at a fuel pressure regulator or larger injectors? Have you bored or stroked this engine, or otherwise don't something that the stock injectors don't flow enough for? Tuning with stock displacement will work with stock injectors.
Thread Starter
|
Senior User
Joined: Jul 2004
Posts: 186
Likes: 0
Originally Posted by MotorHaven Guy
Can't give solid numbers for a chip with custom work. Only way to know for certain is to put it on a dyno, but generally you'll see a 10% horsepower gain and a 15% torque gain. Why are you looking at a fuel pressure regulator or larger injectors? Have you bored or stroked this engine, or otherwise don't something that the stock injectors don't flow enough for? Tuning with stock displacement will work with stock injectors.
Senior User
Joined: Sep 2005
Posts: 371
Likes: 1
Unless you're in a situation that requires much higher air intake than stock (over bore, longer stroke, turbo or supercharger, very high revs) or there's a need to run it pig rich you won't need larger injectors.
Thread Starter
|
Senior User
Joined: Jul 2004
Posts: 186
Likes: 0
Is there going to be any advantage of getting a custom chip burnt opposed to going with tweecer, other than being able to tune for free? Both will be able to help run a more aggressive cam, etc, right?
Senior User
Joined: Sep 2005
Posts: 371
Likes: 1
The advantage is you get an experienced person making the chip and you won't have to go through a learning curve to program one yourself. The disadvantage is you can't make the changes yourself.
Trending Topics
Thread Starter
|
Senior User
Joined: Jul 2004
Posts: 186
Likes: 0
Originally Posted by MotorHaven Guy
The advantage is you get an experienced person making the chip and you won't have to go through a learning curve to program one yourself. The disadvantage is you can't make the changes yourself.
Thanks
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 10 Fords at 2026 Carlisle Ford Nationals
Joe Kucinski
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Thread Starter
|
Senior User
Joined: Jul 2004
Posts: 186
Likes: 0
My final question is with a chip how much more will it be able to compinsate for? For example will I be able to bore or stroke my 460? Head work? It has the speed density, and converting to MAF seems like a lot more work than I want to try for.
Thread
Thread Starter
Forum
Replies
Last Post