I blew my motor a year ago, and finally saved up enough money to build my motor. My car is vortech supercharged although i do have dreams of upgrading to twin turbos later on. For now i plan on upgrading to 2.87 pulley, larger intercooler, water/meth injection, headers and a new intake manifold. As far as my shortblock goes, here are the parts i plan to buy.

Eagle rods
Wiseco/CP/JE pistons (not sure what compression to get) nor what brand
ACL bearings
ARP head and main stud kit
Headgaskets (not sure what brand yet)

anything else you guys recommend me to get? what compression pistons should i get if im supercharged? however i do plan on going twin turbo in the near future.. I am also having my heads done by the machine shop. i will have pictures up as soon as i get my motor out and into the machine shop. Any feedback will be great, Here are some pics of my car currently

 

good luck with your build

about the CR, go anything between 9:0.1 and 10:0.1

what EMS r u using?

edit: you can also check my build thread.. our build and goal looks pretty similar I think

 

utec. ya our build is actually very similiar. do you have the revup motor? im curious to what numbers you will be putting down. Good luck with your build!

 

ccc just get a shortblock from importpartspro or mimic the parts in one of their stages.

 

CCC, depending on your goals, you could skip the head work and go for a nice set of cams. From what I've read the stock heads flow pretty well. I went with the cams and i make power up past 7k rpm.

 

Were you running the stock pulley when it blew?

 

It wouldn't be a bad idea to get cams, I'd recommend a Haltech (its a lot of money but it's got a ton of features).
Whatever you do end up doing, pay for a good tune.

 

What cams are those? Do you make power or hold power past 7K? What is your max TQ #?

 

I have JWT S7s. Forged tuned up to 7k, but the graph shows its still going up. The tq maxed out around 4800 rpm and is at 400 ft-lb by 7k

 

ya, i agree with getting rid of the head work. These aren't domestics so our heads aren't restrictive. You can do a lot more with that money.

I would invest that money into a good engine management or cams like everyone else said. The engine management will help you in the long run if you plan on doing turbos.

I had a 9:1 comp built engine with the vortech. I put down 451hp on injected performance DD. I ran out of fuel with my single walbro at that time.

 

I see now.. I was equating you saying power with meaning TQ past 7K.

Thom made over 700whp on stock cams and jtgli has done so as well. Both on a mustang dyno IIRC.

 

I did'n know I would run out of fuel with the single walbro already @ 450hp??


hmmm.. good to know

 

There are a lot of conflicting messages out there about the walbro. There is at least one dyno of a ttZ making north of 500whp on a single walbro. If you want more flow than the 255lph, you can always get a KB Boost a pump. Although I'd suggest getting a new 340lph pump first.

 

Then again, a supercharger uses a hole lot more gas

 

Dyno's vary so much. It depends also on humidity, temp, barometric pressure, etc.

Injected performance DD dyno is notoriously low. That same number corrected similar to a DJ dyno would be about 507hp.

You also have to understand that a supercharger has about 20% parasitic drag on the engine so you can expect to use quite a bit more fuel to produce the same power.

Also on top of that you have product variance. If there is a 10% variation in the pumps being produced then that makes quite the difference in power output each pump could handle. They aren't all exactly equal.

 

yes, i have the rev up motor, so i had the 3.13 pulley. However, i had the 928 impeller upgrade and i didnt get a tune right away

 

thanks for the info guys! what do you guys think about headers and a new intake manifold? my goal is 500 whp, i know thats probably a long shot ... but thats why its a goal lol. if i get past 450whp i will be happy.

 

a twin turbo Z will do 500s easy on a single walbro. i ran 575rwhp on a single walbro. know of at least one car that maxed out the single at just over 650rwhp.

twin turbo cars with high quality injectors will make quite a bit from a single walbro. supercharged cars seem to run out in the mid to high 400s. so i agree with binder, the SC appears to soak up roughly 20% of the engines power.

 

I made 565whp on a DD dyno on the single Walbro, had a massive vacuum leak when it happened too. You can run a thicker gauge wire to the pump to boost the output a bit as well.

 

Yeah, it has a lot to do with the fuel pressure actually, which is the voltage/current the pump sees, your size injectors, fuel line diameter, return system etc.