HP guesses in the new year.....

1FSTBRD

Registered User
....Forgot to mention, way to go Dave! 350 hp out of the stock lower end (from what I can tell?) with a turbo is amazing. I believe that the most that I can remember the Procharged/ cam/ intake/ 4.2 stroker/ forged bottom end split port intake guys were getting was around 375 rwhp.
 

20psiofevil

Registered User
....Forgot to mention, way to go Dave! 350 hp out of the stock lower end (from what I can tell?) with a turbo is amazing. I believe that the most that I can remember the Procharged/ cam/ intake/ 4.2 stroker/ forged bottom end split port intake guys were getting was around 375 rwhp.

This was the best I got out of my stock mustang engine with procharger. Looking back at that af I'm surprised it lived! I believe with a healthy tune it could of made 390-400rwhp. I was fighting the returnless fuel system back then also.
 

Attachments

  • procharger dyno.jpg
    procharger dyno.jpg
    59.1 KB · Views: 131
Last edited:

1FSTBRD

Registered User
This was the best I got out of my stock mustang engine with procharger. Looking back at that af I'm surprised it lived! I believe with a healthy tune it could of made 390-400rwhp. I was fighting the returnless fuel system back then also.

Stock? Wow. That's awesome! The bottom end on the 3.8's is much more durable than it gets credit for. On the Mustang forums, 275-300 ish rwhp was the commonly advised power level not to exceed with a Procharger setup running 7-8 or so PSI in stock form, but I don't know if anyone had actually ran their particular setup higher than that to test it out. Clearly you had, so it's good to see that someone had rolled the dice.

Does anyone know the real limit to the stock bottom end on the 3.8's? As in turned up the boost until it physically blew? Obviously the M90 would create lots of heat, but I'd be interested in what the actual limits of a turbo'd/ Procharged setup would be.
 
Last edited:

XR7 Dave

Registered User
Stock? Wow. That's awesome! The bottom end on the 3.8's is much more durable than it gets credit for. On the Mustang forums, 275-300 ish rwhp was the commonly advised power level not to exceed with a Procharger setup running 7-8 or so PSI in stock form, but I don't know if anyone had actually ran their particular setup higher than that to test it out. Clearly you had, so it's good to see that someone had rolled the dice.

Does anyone know the real limit to the stock bottom end on the 3.8's? As in turned up the boost until it physically blew? Obviously the M90 would create lots of heat, but I'd be interested in what the actual limits of a turbo'd/ Procharged setup would be.

It's a dangerous game to play. One person has a personal experience that they consider to be gospel, someone else bets their kids future on achieving the same result and boom. I have played that game many times and the longer I live the more I realize that it's a fool's game. One person might be fine with the idea that their engine might explode at any minute but the next person might consider that traumatizing.

It would have been very easy for us to turn the boost up on our $200 JY motor and "see" where it goes but if I have learned anything over the years it is to act more responsibly than I think. So that's what we have done here. With the right pieces in place, we will satisfy everyone's burning desire to see what is possible vs. what is responsible. And no, that doesn't mean we are going to blow up a stock 3.8L. What it means is we are building a solid bottom end and some good valvetrain so we can safely turn it up. :)
 

plethaus

Registered User
Here is my own car. You can see I hit the rev limiter in second.. I ran into it just because the powerband is now so much more linear that 6000 feels like 5000 used to (I was still getting used to that.) I am taking it back to Dave this summer for E85 conversion 'cuz it's easier to find it here than 93 octane is now. Also note how the camera gets pushed backwards in perfect time with the way the power comes on, lol:

 

TBirdJKC

Registered User
Here is my own car. You can see I hit the rev limiter in second.. I ran into it just because the powerband is now so much more linear that 6000 feels like 5000 used to (I was still getting used to that.) I am taking it back to Dave this summer for E85 conversion 'cuz it's easier to find it here than 93 octane is now. Also note how the camera gets pushed backwards in perfect time with the way the power comes on, lol:

I love the way that thing sounds. Racecar exhaust FTW!
 

1FSTBRD

Registered User
It's a dangerous game to play. One person has a personal experience that they consider to be gospel, someone else bets their kids future on achieving the same result and boom. I have played that game many times and the longer I live the more I realize that it's a fool's game. One person might be fine with the idea that their engine might explode at any minute but the next person might consider that traumatizing.

It would have been very easy for us to turn the boost up on our $200 JY motor and "see" where it goes but if I have learned anything over the years it is to act more responsibly than I think. So that's what we have done here. With the right pieces in place, we will satisfy everyone's burning desire to see what is possible vs. what is responsible. And no, that doesn't mean we are going to blow up a stock 3.8L. What it means is we are building a solid bottom end and some good valvetrain so we can safely turn it up. :)

That's the smart route. :D Either way, I'm impressed at the power levels you're currently at on a stock bottom end.

I'd finally figured out why my Mustang wasn't idling right after I'd installed the cam last year Dave......it was a bad/ errant injector. It was driving me nuts. The car was running pretty good still, but it felt like the AFR's were off. I'd installed new injectors last week after troubleshooting a bunch of things and some smoke tests and various things and it's a completely different beast.
 
Top