With the limited info here in this section and the lack of available aftermarket parts, I was wanting some opinions/help on finishing up my build.

So far, the short block is in the process of being built. That portion of it should be done sometime in the beginning of the week. Here's what I have so far:

New GM 6.2L L92 block
Callies 4" Dragonslayer Crankshaft
Callies Compstar Connecting Rods
Custom Wiseco Pistons 9.5cc
Custom Total Seal Piston Rings
ARP Main Studs
All necessary machine work, assembling, and balancing done by HK Enterprises (Erik Koenig).

I have the EFI L76 intake with LS2 fuel rails, Nick Williams 90mm throttle body, SLP 85mm MAF, SLP high flow bellow, and Texas Speed & Performance 85mm lid. I plan on ditching the MAF and was evening thinking of going with a bigger throttle body. Here are my questions:

Should I stick with my EFI L76 intake manifold or use a carb version such as the GMPP, Edelbrock Victor Jr., etc?

If I should switch to a carb version, I'll have to get rid of my LS2 fuel rails, so what will I use?

Where/who can make the necessary bungs/holes for the injectors or is it possible to do yourself?

Will I be able to use my Nick William 90mm throttle body or even if I upgraded to a bigger one?

What about the rest of the intake?

Pros/cons between an EFI and carb? Which would be better for an "all-out" drag application?

Switch directions:

If I stick with my EFI L76 intake, I plan on getting the Katech spacer kit and upgrading to the flow matched Ford Motorsports SVO 42. I wanted to play it safe and felt that the injectors that came with the L76 intake kit wouldn't be sufficient.

My Nick Williams will work and bolts up just fine to my EFI L76 intake. I read somewhere that he will be releasing a 100mm version. Will it have the same bolt patter and will I benefit from it any?

Valvespring kit? I was thinking of just using the new Patriot Gold Extremes, would that be fine? I read that they're even working on a new set that should be rated even higher for a more aggressive setup. Any specs on that kit?

Valves? The only thing I've read was that Manley and Rev are working on a set. I'm pretty sure that the set they are working on is going to be a stainless steel version. Is titanium going to be available and if so, does anyone know who will offer them? The huge intake valve is going to be a limiting factor on my rpm usage because its going to be heavy, that's why I want to go titanium here. Stainless steel seems to be the "upgrade" to regular steel valves. What's better about it and the pros/cons?

Keep in mind for those who will input on this, that this is a drag application only. I don't care about drivability as I don't drive the car on the street anymore. I want to maximize my setup and get the most of out of as far as ET and power. This is going in my '00 Camaro SS. Thanks in advance.

 

Intakes: based on what i've read, the only way the Carb manifold is going to show more gains over the EFI intake is if you actually use a carb.

Injector bungs... a machine shop would probably be the ones that drill those for you.

Fuel Rails for carb L92... aeromotive?

I'm sure they make an elbow for a carb plate to a 90MM tb and maybe even a 100mm TB, but i bet they're different, in realtionto the TB mounting bolt holes.

 

That has been my find on anything I have read stick with your first plan you will be fine. Or go with a sheet metal I would think would be the only gain over the L76 etc...

 

I've been thinking that if one wanted to boost with L92's that one might want to run the aluminum single plane just to avoid issues with PSI and a composite manifold.

 

230 views...3 replies.

 

About the carb, its very false!!!

Working the intake over, making the runners shorter by porting the opening and choosing the right cam with that intake in mind and the modifications done to it, theres NO WAY you will lose power. Ill post the power results of a 347 build very soon. Its a carb intake setup and the builder is shooting for 700 hp before the fogger is used.

 

THe problem is its READING. Were 95% is BS anyway! Consult with people in the know, IE a competent builder and you'd be surprised if they've actually done R&D on them and what the low end gains are.

 

Thats what GMHTP said. Didn't read it here. When they put the L92's on the 6.0 and the livernoise stage II cam.

 

Exactly my point. Magazine articles are just for publicity. They will change it however they feel suits the sales dept. Just like the News Stations. They also installed a BOX STOCK intake there buddy. Ill have pics tonight of the setup I speak of. I should get to take pics of it tonight. Its not hte L92 but same style nonetheless. Its the GMPP for the LS1/6 cars.

 

I totally agree with what you are saying here but i think he was asking about box stock intakes.

 

ole dude is building a motor from the ground up..Im just offering other venues. Hell who actually puts box stock parts on a car these days anymore anyway when you are looking to set yourself apart from the pack? LOL

 

http://www.gmhightechperformance.com...ads/index.html

on page 3 there is a graph that shows the difference between the ls2 heads/intake and the l92 heads with the l76 and the L92 heads with the carb intake only they use fuel injectors with the carb intake and an elbow from a mustang. they actually show a pretty decent gain over the L76 intake with fuel injection

 

I have one question about the engine... do you want to run fuel injection, or not?

If you want to run fuel injection.. and are going for MAX power, I'd say a sheet metal would be your best bet, probably with a 105mm TB, like an accufab, and run a SD tune, screw the maf, hell screw the lid too, just run a big gulp type duct to the TB.

if you're not set on running fuel injection... I'd seriously think about putting a carb intake and a carb on the thing, no more computer to worry about, a TON less wire that you would need, etc.etc. Just one of those MSD boxes for a carb lsx setup and that's it. Tosto went to a carb and alky, and I am 100% sure he will certainly make more power that way.

Alot has to do with wether you can tune a carb and want to do that, or if you want to tune with a laptop..... if you have to pay to have someone do both, then it's probably a wash, or easier to learn the carb I'd think, plus there's bound to be alot more people that know how to do that at the track as well.

What are you running for fuel too whiler we're at it, race gas I assume.. but have you considered running alcohol? The guys I know that run it race sand rails, and they go for 300 feet... the guys that I knwo that ran race gas and switched to alky usually picked up 1 to 2 tenths in 300 feet going to alcohol, I'd think a 1/4 mile car, may pick up even more then that.

 

JL ws-6, well, I've already got the EFI L76 intake manifold, LS2 fuel rails, and Nick Williams 90mm throttle body. I was thinking about going with an even bigger throttle body once NW releases, depending on when that is. I already have an 85mm lid from Texas Speed & Performance. I've already dished out $500 for a custom dyno tune. I don't have to run fuel injection, but most of my setup is already geared that way.

I had planned on getting rid of the MAF and doing a SD tune.

When the funds become available, sheet metal all the way! But for now, I'm on a budget.

I don't know what gas I'll actually be running yet. I hope that I can get away with 104, which is what I think can be bought at the pumps at Houston Raceway Park.

 

All you need know is those new Livernois L92 heads that flow 360 cfm for $1,795.00 (core)!

 

Waiting on answers from them. I'm pretty sure the spring kit won't be sufficient for my setup.

 

Nothing like an extra $250 or so for PRC golds won't cure but of course they need to respond to your questions that I saw on their post!!

Killer set-up you have. How many cubes will this yield, 416?