So how much power can you make, when you stuff copious amounts of air at 20psi down this beast, thru 400cfm cylinder heads, and 555ci of Buick mayhem?... We will find out soon enough.. JW
Well lets see, my wife's stock 2.0 liter Ecotec 4-cyl in her 2009 HHR made 340 hp @ 20psi of boost. So that's 170 hp per liter from a tiny little stocker. I'll predict that you will get 1,546 hp from that beast your building.
Depends on what's providing the 20psi,...I know Jim had a ysi but I'm thinking there was an upgrade,..
Yes, Jim has upgraded nearly everything now, in fact I think the only parts that hung on from the last build are the Supercharger brackets and the pulleys. And even the bracket had to have some surgery to work with the new blower.. Biggest changes are to add 90 cubic inches, 60+cfm of head flow, and EFI/DIS. We will see how it all works together, this is one of the very few motors when my dyno guy asked me "how much HP" when we were talking about fuel system.. my reply was "I have no idea.. north of 1100 somewhere, the last would have made that if we let it find the rpm peak".
Will have fuel curves for both E-85 and Pump premo. No intercooler... https://prometh.com/collections/volute-injection JW
The new S/C is a Vortech xb-110. Said to support 1900hp but i have no clue how much power this combo will deliver. Gonna be interesting for sure.
I would expect 1500 with 15lbs conservative estimate Will be 800NA I'm sure so one bar psi will double that number Blower curves are awesome just keep going and going
Since the use of the Wildcat intake, I'm assuming it's a stock block? If not.......how are you fitting the intake to a Tomahawk block short of modifying the intake........which I can see has not been done?
I like that injection method. Before we decided to go turbos with A2W intercooler we were going to use a f2 and the volute injection. Some guys are nervous about using meth to cool but there are many safeguards that can be used now with the efi ecu controlling the meth while monitoring A/F ratios. There are guys making well over 2k hp on meth. Easy breezy.
Hi Steve, I assume your referring to the issue of interference between the depressed center of the Air Gap style SPX intake floor, and the lifter valley strengthening ribs on the Tomahawk block. With the use of a TE head, and the Adapters from Precision Billet Inc, the intake is raised about an inch and a half, which takes those ribs out of play.. This is another wonderful dead-nuts correct product from Rob at Precision, we are all lucky to have the talented guys like Rob, you and the crew at TA to produce parts for us.. makes my job a lot more manageable. If anything limits the power on this deal, it will be the intake. With the use of E-85 and Alky injection, Plenum and runner volume are a concern. All that extra fuel/alky in the airstream taxes the sizing. You can only put some much A/F charge in a given space. And the 555 is a big air pump. Previous builds, naturally aspirated, showed a 60 Hp loss from 6300-7000 rpm with an SP-2 on E-85, whereas the loss on race fuel was only about 15HP in that range. And this is all at the 750hp level.. how would the boost affect this?... that is the great unknown, you can run all the math you wish to, but the engine will often disagree with the math, due to other factors. Originally I was going to use an Edelbrock 7144 EFI manifold with my adapters on this project, but in mockup, we found that the air inlet of the front entry intake/throttle body was a couple inches in front of the Supercharger outlet. With Jim's desire to not use an intercooler, it would have made for some funky piping. Not only the location, but the downward angle on the air inlet would have been a challenge, so we downshifted to a converted carb manifold. We had two choices for a larger volume intake.. either an SPX or an Indy 440-3X intake. Now, just based on volume, the Indy intake will certainly out power the SPX, it's huge. But I am not building a drag race only motor here, in fact the 65 Skylark that this beast will end up in, has a 4L80E overdrive trans, so it has to cruise down the road cleanly. I was worried that the huge manifold would suffer from poor fuel atomization at low boost, low speed conditions. That concern, along with the SPX's ability to cool the manifold with a water system, made it the choice for this project. Thanks JW
Thanks Jim, for the explanation. Makes sense..........I just didn't have my thinking cap on! LOL I'm starting out with an SP2, Quick Fuel carb and a hat. If all goes as planned some time in the future I'd like to build a custom intake and run 2 Fitech units with custom hats. Long way to go before I get that far though! LOL Good job on the build. Best of luck for big HP numbers and drivability!!
