Steven Jordan Piro

Please someone help me? Don't have alot of money too waste an do stuff I'm gonna have to redo in future trying to build a 1994 LT1 5.7 has 98,000miles on an motor don't know really what to do have a Idea looking too get 450\475 horsepower here what I'm thinking of doing 1)-getting a pair of decent heads 2)around a 500lift cam 3)1.6 roller rockers 4)set of 42pound injectors 5)52mm throttle body BBK 6)Cold air intake (3wing) 7)already have super competition p\n 2061 people told me too go with long tube didn't have 1000 bucks at the time already have so gonna use was looking has bigger tube coming out head than long tube gonna eliminate cats too 3 inch pipe w/bungs for o2 sensor so engine light don't come on too Corvett central 2 7\8 exhaust w/h pipe to 40 flow masters so only thing that is definitely is exhaust some one told me that trick flow had a decent kit 430 please give me sum information please

Kevova

You need to do some research on what others have done. A budget of what you can spend. If you do the work or have it done. For your goals better figure DIY 3500. Have it done 8k. The number can go up it's is unlikely to go down. "Horsepower is built with cubic dollars, not cubic inches"

THE 383 admiral

what is your agenda. that you will need 450 - 475HP? are you talking. engine OR rear wheel.
475 rear wheel. on a stock 5.7 configuration. is a UNrealistic number. this would take a fairly radical build hitting that goal!! even a fairly mod'd 383 is asking alot. My current LT1 with a few mods. would keep MANY C4 owners very happy. with a grin on your face. in fact GM should have rolled the LT1 out. exactly like my current setup.

mrodoc

Do your research, then research some more. You will get MANY opinions, all different...and the cost will be more than whatever you budget. There are so many things that you don't think of. I had to add so many tools to what I thought was an adequate tool chest.
I suggest that after you do your research you Contact Lloyd Elliot. He was very helpful, and ultimately I had him do my heads, order custom cam and valvetrain components. I ended up with .574 lift cam. Take your time and DIY and have fun.
I began chaging torque converter during Christmas holiday and figured I'd be done with total build by spring. Working some eveninngs and partial Saturdays I finished in June

Christi@n

charliet615

"Speed cost money, how fast do you want to go?"

383vett

Itl'll be very difficult to get 475 hp with this build. When I had an 08Z with headers, intake and tune, the 427 ci ls7 motor dynoed 485 at the wheels.

SELLC

I see this all the time...

Buy a Nitrous kit and get over it already! $700 will get you 150 HP and everything needed.

Everyone acting like women saying its going to ruin their engines.. I'll tell you what ruins engines... Someone taking them apart that don't know what they are doing, then running out of money and the car never running again.

Anyway, just my 2 cents.

JrRifleCoach

[QUOTE=mrodoc;1592824093]You will get MANY opinions, all different.../QUOTE]

Aint that the truth.

Research research research! Ask questions, then find a competent engine builder. Someone nearby that has Corvette LT experience. And that will also tune his work. There are many stories here of those that have not doen their research and came whimpering back with crazy stories how the builder ripped them off or wont stand behind his work when it grenades.

The other option is to load it nitrous. And have to buy a complete engine.

SELLC

The whole buying new engines due to nitrous is typically reserved for 1diot jacka$$es who probably don't know how to drive let alone use nitrous anyway.

JrRifleCoach

Wow! You do have issues.
Say one thing that remotely disagrees with your point of view and POW.

I'm not rising to your bait.









.

SELLC

Hey, I am not the one resorting to name calling by way of emoji's.

And I meant what I said, Nitrous is all about skilled racing. You have an objective - TO WIN and that's it. I can't tell you how good it feels to pull up in what appears and sounds like a bone stock car and take down some guy with a loud exhaust and supercharger.

It's also a good feeling to know you have the horsepower on tap to compete with some of these newer models like the hellcat's 700 HP and the higher end Camaros and Mustangs.

You have to know what you're doing and you have to control the race. Most people running nitrous don't usually drive around aimlessly hot ******* it every stop light, no... The skilled racer waits, resist the temptation to lose control of the race and then pounces when the conditions are best suited for victory.

Like I said, it takes skill and control to run nitrous, even if you don't like hearing it the facts are the facts... Nitrous does not take away any power from an engine when it's being used. A turbo or a supercharger takes some 30% of the engines power to turn! That's why you have "lag". Not only that, a turbo or supercharger will create an enormous amount of heat, even if intercooled. Heat soaked engines don't win races. And most of all, Nitrous actually cools the air charge when in use! It's like an arctic turbo without the exhaust back pressure. And it's cheap!

You don't have to be running nitrous to blow up your engine, bad drivers do that all the time without nitrous.

cadmaniac

If used correctly nitrous is the most inexpensive option... There are risks with any engine modification...

That being said, it is also easy to find an inexpensive short block Lt1 engine,...all day long.

So, my advice would be to get an adjustable kit with a innovative motorsports 3893-PSN1 afr kit that shuts the nitrous off if afr in not correct. Install in 50 hp increments.

Then.... find a core to rebuild at your leisure, take your time and get everything right. you should have a spare engine if you need it after your done. You can take your time and always have a backup plan.

Good Luck!!

JrRifleCoach

The guy is wanting to build his engine. Can any of you great minds help him?

SELLC

Guy said he wanted to build 450-475HP and wasn't sure what to do. Maybe you better read again.

SELLC

This guy has a VERY GOOD point. Building an engine is much more fun when your car isn't down! Get a good core and build an engine at your leisure, use forged Pistons so your nitrous can be used on your new engine in larger amounts later down the road.

cadmaniac

But also keep in mind that the trans, and diff. must be up to the task. 450hp/400tq will break things behind it also.....

FASTAZU

Sell what you have and by a Z06

DGXR

If you are talking about a C5 Z06, this is exactly what I was thinking, and thanks for saying it. The LS engines respond much better to modifications than the previous gen LT engines. Heck even a base C5 (non Z06) will be easier and cheaper to modify for 475HP.

Even though the car itself will cost more up front, the overall cost (after all the mods) will be about the same, or less.

I know this does not help the guy build his current car. But it's a more reliable and likely less expensive way to get the power numbers he wants.

SELLC

I agree the LS engine is much more technologically advanced than that of the LT... From the ultra fast computers and digital 8 coil ignition systems, to the fancy bee-hive springs found in the heads and roller fulcrum pedestal rockers straight out the gate it's hard to beat! REAL SNAPPY and quick out the hole, but falls a little flat on the higher end unless modified.

If it weren't for the unappealing Z06 body, I'd have gotten on that train.