Whipple 4.0?


Thanks - should I look at an injector upgrade as well, or not bother? Best we have here is 94 and it's rare. 91 is mostly what we have all around here and it's 10% ethanol for the most part.
 
Thanks - should I look at an injector upgrade as well, or not bother? Best we have here is 94 and it's rare. 91 is mostly what we have all around here and it's 10% ethanol for the most part.

I wouldn't worry about that on the front end. With increased capacity from a dual BAP I can increase FRP to extend the size of the stock injector.
 
The 4.0L can be tuned down to match the fuel system. I think a third, external fuel pump would have solved my problems early-on... but I was expecting to do more mods down the road so my fuel system upgrade was more extensive than necessary... i.e.: don't be afraid of the 4.0L as an option. Just an FYI: I may be wrong but I think any 800+ hp numbers are going to be on 'special' fuel. BAP didn't help much IMHO but, as stated, I may have been dealing with a pinched fuel line inside of the tank.

As for long term usage, I think the stress on the crank, specifically the single keyway design, is amplified by 3.4L just as much as the 4.0L. However, when I dissected my motor and inspected the keyway there was almost zero wear on this item. I expected to see the keyway teetering on the edge of failure and it looked as tho it was barely broken in. My car had 33,000 miles on it (20k of which were executed with a 4.0L Whipple on the motor). Much of the failure is overplayed as the problems are expressed online, while the success (non-failures) go untold.

Get the 4.0L, and scare yourself silly.
 
There's no question now, I'm going with a 4.0L. I won't be nailing the pedal all day long and I feel that this motor is far more bulletproof than my 427 Z06.
 
Get the Whipple! I have the 3.4 gen 2 and love it! Mine put down 766.6. I see about 19 to 20 psi on my mechanical gauge a mile high. I think you will enjoy the Whipple.
 
You had to add the mechanical gauge, right?
 
Here's Torrie working his magic while tuning my GT.

[video=youtube;LpCqPn7KgFg]http://www.youtube.com/watch?v=LpCqPn7KgFg&feature=player_embedded[/video]
 

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You had to add the mechanical gauge, right?

Didn't have to. I bought a 30 psi gauge here from a member. It looks totally factory, except it reads boost directly and goes to 30 psi.
 
It's an electric gauge with the sending unit mounted in the engine compartment. It also has a provision for data logging (5v reference signal) if/when ever needed.
 
Fubar also had a pinched fuel line in the tank.

My experience with a old gen 1 3.3L running a 19lbs pulley will get you close the limits of the stock fuel system I was running about 85% to 90% on both the injectors and fuel pumps. During the mile runs with special gas an more timing I and a 21 psi pulley (but at 2100') I was over 90% on both injectors and pumps.

Because I was knocking on the door of running out of fuel, IMO no headroom for safety, I have just finished installing a Boost-a-pump. The should get me some headroom.

Clinton, do you have a picture of your boost a pump unit installed?
 
The ideal place to mount the BAP is behind the front right wheel well liner. The is where the two fuel pump control modules are located and so wiring is a breeze - and wire lengths are very short.
 
Do you happen to have a picture of an installed unit?

Is 800 RWHP the magic number where you need to add the BAP?

I guess I am really asking if there is any chance it would be necessary at say 750rwhp?
 
Here's Torrie working his magic while tuning my GT.

[video=youtube;LpCqPn7KgFg]http://www.youtube.com/watch?v=LpCqPn7KgFg&feature=player_embedded[/video]

Waldo,

Very nice torque line... solid pull from.. 2500 to 5500.. must feel like a CAT shot.

Looking at your A/F line , 5800 rpm is where your stock fuel system(?) starts to lose capacity compared to the 4.0 Whipple.

Do you have a BAP installed?
 
Do you happen to have a picture of an installed unit?

Is 800 RWHP the magic number where you need to add the BAP?

I guess I am really asking if there is any chance it would be necessary at say 750rwhp?

I have some great photos but I am in Vegas looking for EP at the Wynn :lol

When I get home I can post some. I found a great location that is more easily serviced if needed compared to where it is typically installed. A am also going to mod the tune file so that the voltage table is closer to reality with the BAP and jack the fule pressure up when the engine is under load. Torrie does that with good results.
 
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I have some great photos but I am in Vegas looking for EP at the Wynn :lol


Yeah, well, look all you want - you ain't gunna find me! I was tipped off that you were coming and I'm duckin' ya like the plague!

Thank the lucky stars my suite can only be accessed by private elevator...:secret: :devil
 
I had a similar question, and this was the answer.

c1c86507.jpg
 
Looking at your A/F line , 5800 rpm is where your stock fuel system(?) starts to lose capacity compared to the 4.0 Whipple.

Do you have a BAP installed?
Installing a BAP has been on my "to do" list since Torrie tuned my GT. I swear I will actually get around to installing one in the next couple of months. I just have to get all of these moving boxes out of the house.