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200HP


D4v1d

Member
Joined
Aug 29, 2024
Messages
22
City
Utah
Vehicle Year
1988
Transmission
Automatic
Hello i have 1988 brinco ii with a 4.0 v6 1993 explorer i believe the engine can pump out 173 hp and was wondering if it is possible to pump out but more power somewhere around 200 hp
 
Hello i have 1988 brinco ii with a 4.0 v6 1993 explorer i believe the engine can pump out 173 hp and was wondering if it is possible to pump out but more power somewhere around 200 hp
Youre at 160hp stock

Yes the 4.0 is capable of 200 but with very limited aftermarket youre only option for making real power is forced induction.
 
Im meaning for forced induction turbo or superchargers
 
For that engine whatever you want, it will all be custom.
 
Can i do it with stock internals
Yes....but im not sure the limits if you want reliabilty. Pry less then 10psi. Look up the few guys over the years here that have turbo'ed 2.9's....probably will put you in the ballpark
 
@D4v1d
Your 4.0l is an excellent candidate, especially if it is the California SFI version as it is 10% more efficient:
+20hp, custom regrind cam
+20hp, flow bench port and polished heads to intakes
+20hp, quality headers with appropriate sized free flow exhaust

There is a bit more power that can be realized without using forced induction but at the end on the day it is a truck engine, design to perform as a truck is be expected; ample torque to get payloads moving while being drivable:
• increasing the compression ratio will yield 4-6% more HP per full point of compression
• a multi-spark ignition will deliver 3 or more high voltage sparks below 3,000 RPM
• a capable set of plug wires
• an electric fan will reduce the load on the engine

Some consideration should be given to maintaining normal engine temperature:
• remote engine oil filter
• engine oil cooler
• lower heat range spark plugs

What is your intended use?
 
Last edited:
@holyford86 is still active on here

I do still exist, yes, haha.


To weigh in on OP's question though, it is possible to gain some power with the 4.0 through some upgrades, there are a couple ways to get more power, being increasing airflow via a cam, headers, and head work, or forced induction.

Pre supercharger I was (and still am) running a set of headers into a free flowing exhaust, which slightly helped power but helped my mpg more, the power was adequate but I needed a bit more. The supercharger I added made quite a difference in the power department, didn't appreciably change my mpg, and the engine still runs into a wall at 5k rpm just like stock, haha. It still does truck things very well, I've put a bit of time into making sure it stays cool and I drive it daily unless there's snow on the ground. It wheels well and is a tractor at low rpm (full boost around 1500rpm).
 
Last edited:
@D4v1d
Your 4.0l is an excellent candidate, especially if it is the California SFI version as it is 10% more efficient:
+20hp, custom regrind cam
+20hp, flow bench port and polished heads to intakes
+20hp, quality headers with appropriate sized free flow exhaust

There is a bit more power that can be realized without using forced induction but at the end on the day it is a truck engine, design to perform as a truck is be expected; ample torque to get payloads moving while being drivable:
• increasing the compression ratio will yield 4-6% more HP per full point of compression
• a multi-spark ignition will deliver 3 or more high voltage sparks below 3,000 RPM
• a capable set of plug wires
• an electric fan will reduce the load on the engine

Some consideration should be given to maintaining normal engine temperature:
• remote engine oil filter
• engine oil cooler
• lower heat range spark plugs

What is your intended use?
I want my bronco II to be able to climb over hills easily and im still just 18 I want alittle bit of that cheap thrill and power that i know my car provide
 
I want my bronco II to be able to climb over hills easily and im still just 18 I want alittle bit of that cheap thrill and power that i know my car provide

Thats what 4lo is for
 

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