Im thinking about going carbed for my intake. I was going to make it a 383. just seems like there's a lot of money involved. Its in the machine shop, got pressure tested ect and the motors real good. The guy had a lot of questions for me, cause he is going to build it for me. I'm not sure what to do.. I know it's going to have to be bored out.. im tryen to get hp for the cheapest i can. Maybe instead of a 30 overbore i could go 40 and say forget the 383 im not sure.. please help me.. i have a slow fuel injected 2.8 v6 tbi im gunna have a t56 to this vortec motor.. im tryen to run into the 12's.. like around 450+ hp all motor.. thanks

 

You don't bore a block to gain CID or power, you bore to service the block and put it back into good operating shape. It will cost a lot to get an actual 450hp. To do it you want the most CID you can get.

How much do you have to spend, and we will tell you how fast and how much power you can make with that $.

450hp and budget don't belong in the same sentence, let alone paragraph.

 

As stated, Horsepower gain depends on your budget. A T56 alone would cost roughly $1,300 for all the parts needed for the swap and this is a pretty low number for complete 6speed. To rebuild a Vortec 350 about $800.00 for parts,labor distributor, mechanical fuel pump, intake manifold and carb. $2,100 so far and again the numbers I gave are probably low so hopefully this helps you out.

 

They can... see: 450 hp, nitrous oxide, once.

1.) Money
2.) Emissions

Everything hinges on those 2.

 

my emmissions here they just stick a rod in the exhaust .. an o2 sensor or sumtin.. for the money.. just make sure u kno i want a carbed intake.. and also for the money.. dont worry about it.. as long as i make some good numbers and have a chance shooting low mid 12's... even just in the 12's

 

It's all about the money. But you can get good power out of a 350 with vortec heads. You'll have to get the heads machined for a cam ove .480 lift. With the right cam, like an Xtreme Energy roller and a performer rpm intake will get you up around 400 for a reasonable price. But if your going from a 2.8 to a small block expect to spend some money on the swap itself. Especially on little nickel and dime stuff you won't expect. Just do it right and do it once.

 

yea.. well first im building the motor, then getting the trans.. then getting a t5 parts car.. then the little stuff that needs to be replaced as well as a t56 crossmember and v8 motormounts/ springs ,rear end, driveshaft.. but i want to kno what set up to run on this motor .. its a vortec 350.. already has vortec heads doesnt it?

 

If it came out of a 96-98 Gm truck then its a vortec 350 and yes its got vortec heads. They just need a little work to handle a cam over .480 lift. They are good heads, not as good as aftermarket but probably the best production head out there.

 

my dad is very confident and said it is a vortec 350.. i want to know what to make this motor and the parts i should get like asap .. money isnt the option...and also the parts dont have to be top line to reach 450+ hp

 

Here is a picture of a Chevy SBC with vortec heads. If the front of your heads has the triangle ridges like the pictures then you have vortec heads.

 

k thanks.. but the point in posting my subject was to get some help.. I dont kno much about motors.. or what i should build this motor to be..383, 355, im just not sure and i need help... i know that it is going to be carbed.. what intake, carb , cam, ect.. please help me i want to run 12's

 

86z/92rs
Senior Member

Registered: Dec 1999
Location: Southern California
Posts: 354
Car: 92 RS Camaro
Engine: Work in progress '357 vortec'<~~~~i have a vortec also
Transmission: auto but needs a t56<~~~~thats what im goin with also

what are you tryen to run in a 1/4

 

My 2 cents: I'd run a Performer RPM intake, Holley 750 carb. get some clearancing done to support higher lift on the heads, and add some good valve springs. Then run a decent cam, at least as big as the GM HOTcam with 1.6rockers (218/228 dur @.050, lift of .525/.525 I believe). Exhaust needs to be a good set of headers, 3" cat, decent catback of your choice. That will make 410-420hp on a 350 with around 9.5:1 compression which I would aim for with the rebuild kit you'll use on the Vortec 350. Numerous similar mag buildups have reached that power range.

I think I'd step up the cam just a bit over that, some aftermarket roller cam that's around 224/234 @.050, with the most lift you can find in that duration range... I like to stay on the conservative side of cam selections for street cars...

If you went to a 383 you could expect a few more ponies with the same setup, and you could run a slightly larger cam still with less ill effects for more power as well.

 

thanks Ray87Z .. you helped me alot.. how much you think it would cost to do a 383 set up.. i kno i should bore it what 30 over?? the machine shop can do that with no problem that my dad knows, as for what else?? what crank.. <~~~need help

 

You don't bore a block to get more inches; you do it to clean up wear.

A 350 bored out .030" (1st standard overbore) is considered normal maintenance works out to 355 CID. It's still a 350.

A 350 bored out .040" (usually used on a freshly failed .030" over motor, as the 2nd overbore) is 357 CID. It's still a 350.

A 350 bored out .060" (2nd standard overbore, usually this is the end of the road for the block) is 360 CID. It's still a 350.

A 350 bored out .030" (maintenance to make up for a lifetime of use) plus a crank with 3.75" stroke (people used to use a stock 400 crank for this) is a 383. Since it's not just a factory size motor that's had some routine maintenance done on it, but rather a mutant, we give it its own name, unlike a 350 that's had its bore wear cleaned up and happened to grow a tiny bit in the process.

Since your motor is a 96 up, it will have a 1-piece rear main seal, and roller cam provisions in the block. The only way to make it into a 383 is with an aftermarket 383 crank and pistons. Some of these setups can use your existing rods; some will require other rods; some you can buy along with all the other parts you need, as a "kit" (i.e. a whole bunch of little boxes all thrown into one bigger box).

What is your budget? How much power are you looking for? Power lives in the heads and induction; what are you going to do about all the other things that a 6-cyl car needs in order to accept a V8, like exhaust ($1000) and a transmission and so forth?

 

wow RB83L69 ur helpen me a lot.. yes this build up is going to take about 2 years +..heres my plans

383 stroker

T56 transmission

3.73 moser rear meant for a 93-98 camaro.. so my z06's in the rear are fitted nice.

new Driveshaft-not sure which yet

probably gunna get a t5 camaro parts car

t56 crossmember

v8 motor mounts

i think i gotta change up that fuel pump.. my dad and his buddies will help on that stuff i guess

then like a bigger rad ect

i make about 3 grand a summer...and some side money..

 

V8 motor mounts are a little bit of nothing.

A stock driveshaft will work fine. Get an aluminum one from a LS1 car. Again, a little bit of nothing.

A T-56, from nothing to the full setup, will be over $2000.... that's a transmission, a clutch, a flywheel, a torque arm, speedo gear provisions, hydraulics, pedal assembly. There's no such thing as a "T-56 crossmember" for these cars, except aftermarket, and then you need a stock T-56 torque arm (that mounts to the trans), which it would be stupid to put behind a powerful motor. Better way to go would be an aftermarket torque arm with its own crossmember that relocates the torque arm mount off of the transmission.

A T-5 parts car won't help you at all with the T-56. None of the pieces will fit a T-56, except the pedals.

An exhaust is the better part of $1000..... you're going to need every piece since you have not one single piece now that will work; headers, cat, cat-back, all the hangers and hardware.

The exhaust and T-56 alone will chew up your entire $3000 by the time it's installed and operating, guaranteed.

It sounds to me like you really have no clue yet how much this stuff ends up costing by the time it actually works, and how much work it can be, and how much can go wrong and have to be re-done or re-bought or fixed on as you go or whatever. Looking through a Jeg;s catalog doesn't begin to deliver the whole picture.

I think a far quicker way, and FAR FAR cheaper like 20-25% of the cost, to get to your goal would be to sell the 6-cyl car; buy a 305/5-speed car; just swap the 350 into it; and worry about the transmission and all of that, later. At least that way, you don't have to have a transmission sitting there all paid for and ready to go, so that you won't have to ride the bus from now to next summer or whatever.

 

ugh all this work and me get another car.. sorry buddy

i guess im fcked

 

I know I can run 13's with my set up but if I can get the 12's even better.
As RB83L69 stated, your better off selling your car and getting a car already with a V-8 and a 5 speed so you have less to do when you want to swap in a t56. If you still want to go ahead and build up that 350 vortec motor and want to stroke it out, go to powerhouse which have kits to build your 383 stroker for under $900.00. Try checking them out.

 

I wouldn't say that; just, you'll get A WHOLE LOT CLOSER to your ulitmate goal, for A WHOLE LOT CHEAPER, if you start out closer to your goal to begin with. And, like I said, you won't be faced with the absolute unalterable necessity, of having to do it ALL AT ONCE because the parts you're getting won't fit with the parts you've already got. That's where you are now.

The ability to do things gradually, one step at a time, instead of ALL IN ONE CHUNK, makes it alot easier to handle; especially when fundage is limited.

 

Also check the casting numbers of the block and heads, before you buy parts. You want to make sure you get the correct parts, the first time.

 

kk thanks

 

im runnign a 4bolt 80's block and L31 vortec heads new from GM that my dad and I ported and polished the hell out of and im at LEAST getting 400hp.. the car pulls strong as hell, and i know i can take a stock LS1 vette.. ive seen em on the road pull and they are nothing to impress, but if you want to know my setup just let me know..

i started like you but i had a 305 v8 int he car already so that made the v8 swap easier, but beware, the swap was NOT fun at all.. you will run into all kinds of small problems trying to get the v8 to run and make the engine bay look perfect.. if you want a rats nest, thats your choice, but personally i like my engine looking clean and i like doing things the right way.. if your fuel injected now, you have ALOt of wire issues that are loads of headaches.. i know it sounds dumb.. but buy a v8 shell car.. it would make your life alot easier if your trying to do this easy.. but i assure you this swap is gonna make you cry sometimes cause theres just so many small things you need to do.. if you got any q's tho im sure any of us can try and help you on it, good luck though whatever you do. and dude, going form a v6, even 300hp at the wheels, your gonna be ****less when you step on it.. 400hp is ALOt of power, and its not really necessary.. runnign 12's takes alot of work.. id say shoot for 13's on a lower HP motor say 300rwhp, and get some good tires and have some killer traction, thats whats holding me back..

im also eager to dyno the car "as is", and soon ill be putting on a 750 carb.. ill dyno it after that, i know ill gain incredible power from just swapping carbs, thats another thing holding me back.. but hey you live with what you got for now and keep saving up money... i know its fast as ***** now, so theres only room for improvement