I guess they can figure that out for me since my specialty is car audio & custom fabrication. I trust them to build it correctly I know numerous people that have had great tunes/work from Futral.

Many in the LS1 community are familiar with Futral. My brothers Zo6 had work done there 450whp and once again... engine swap to 383 500whp+ all motor. They just put out a turbo Candy Escalade on 24's that runs 10's. It is a Saints players SUV.

Says its good till 450hp. Guess we will see.

 

While true, you must also think this way. The gasket is like a safety valve. If you cant blow the gasket what are you going to blow?

 

I'll admit the O-ringed gasket is better if you're going for huge PSI numbers, however for the power range most of the builds are dealing with it is highly unecessary. The Cometic gasket I have required no machining, and has been proven time and time again. My buddies drag car has 1300+whp all motor, and he's rocking Cometic headgaskets just like the ones in my car. All the drag car guys around the lowcountry rely on them, so I decided if it works for them it'll surely hold up to my minute abuse.

BoomInIt, which gasket are you getting? The O-ringed one or the stock one?

 

Sheesh... That's some mod list. I hope you put down closer to 400whp than 300 w/ all the $$ you're spending.

 

I think I will be going with the Cometic Headgasket, but I have both to choose from. The lsj crate engine should be arriving before christmas.

 

75LB injectors? event with those pistons and headwork 60's are more than enough as long as you stay at 7krpm. theres a balt in miami thats running that similar setup. after tuning was said and done he put down 309whp

 

by the way, dont go lower than a 2.7 pulley

 

hey ill buy the 2.9 pulley boys pulley from u

pm me if u want to sell it

 

what about your fuel system I know you are going to be running 75lb injectors, but will your fuel pump be able to hold up to that?

 

Yeah, there might not be enought fuel pressure in the fuel rail to support injectors THAT big.

 

Fuel rail should support the injectors. However your going to have to run some kind of piggy back or resistor pack to run the larger injectors. You can find used resistor packs all over on the internet used for dirt cheap or you can make your own from some ballast resistors.

 

I will be using the 60lb injectors due to the PCM and most likely be using Aeromotive 700 HP EFI Fuel Pump. There are a lot of other parts that are being used for the build that are not listed, but will be listed after completion. With pictures and video!

 

why dont you just twincharge your car, i was told that with hahns kit coming out itll be putting out close to 350 whp when all is said and done, i also have been told that our cars will be able to hold that power being stock and itll just bolt right on, all we will need to do imo is upgrade the clutch and some axles and everything should be good.

 

HAHAHAHAHA shortbus strikes again, first off, ur using 75 pound injectors why?

my 60/65 er's sit at 70% duty and i put down 294 whp... wow lol

stick with reality, ud have to hit 400 whp to even come close to maxing the 60's out, something u wont do lol

Also, maybe you should look at doing the valvetrain, ur maxing out the engine, u might as well let it rev and breathe like it wants..

as for exhaust, dont be a cheap ass noob, get a full 3 inch exhaust and grow up

 

shortbus? i think so!

 

Opinionated much?? If he doesn't want to be buzzing around everywhere he goes the E-cutout is the best option. He'll be able to have the extra power from the better flow when he needs it and quiet stock exhaust everywhere else.

 

I want to build my engine right that's why I'm starting with a crate engine and quality parts, not just bolt-ons. I bought the car for the reason of it being supercharged! I have plans on a twin screw conversion in the near future as well.

I was thinking 75's for the future 07 plans of the twinscrew. The stage 3 head has all Ferrea components!


DingDingDingDing! Right on the dot. Has nothing to do with being cheap considering 15k in upgrades. HAHA This is my daily driver.

 

$$$15k!! I'm still trying to convince myself to drop $2500 for mopar S3 (steel wheel) rather than dump it in the car payment. 15g's is definitely a lot to be putting in the car, especially when it's your DD.

 

15K!! I will trade for my dream Corvette C6

 

But then I wouldn't be a cobalt...plus I can drive my bro's 500whp zo6.

 

Nice theory, too bad our car relies on back pressure to properly operate the supercharger, therefore a cut out will in reality LOSE horse power, like in many applications, this isnt a 383 stroker engine, its a useless mod, that more then likely will hurt performance.

 

Umm...no.

Back pressure is bad news on a supercharged engine because the pressure tries to stall the blower, making it work harder. And that extra effort saps power from the engine.

The cutout on my 465 horsepower Bonneville is easily good for about .2-.3 tenths when open. An engine is basically a big airpump the more you move through it the more power you make. Backpressure may make the car feel faster because it increases low end torque but at the expense of top end horsepower especially in a blown car. All race cars and fast strip cars have open exhausts.

 

Thanks for clearing things up. I know many people with e-cutouts and none lost any power! It keeps my everyday driveability.

 

This is the most intelligent thing I have seen in this post yet.