http://www.ls1tech.com/forums/showth...&highlight=afr

I know its hearsay, but 40 more hp from a carbed LS6 than an injected LS6, 23 more hp than a stock LS1 according to MSD.

the edelbrock kit that includes the manifold, the ignition box, wiring harness to fire the coil packs, and throttle bracket is $833 all together.

Add a carb and your in business.

you could even fab up some brackets to keep GENI accessories.

considering how cheap LS1 short blocks are, add a set of good aftermaket cylinder heads and a more aggresive cam, and you would have a great budget build up.

IMO it keeps all the benifits of the LS1, and takes away all the negatives.

All aluminum engine, newer cylinder head technology, coil over plug ignition, cheaper than an injected LS1, and easier to tune.

a carbed LS1 could very well be my next motor.

 

Interesting for sure, but if I ever got my hands on an LS1 or LS6, I'd wanna keep the EFI setup on it. But maybe thats just me?

 

If it were a drag only car, screw FI, but the FI system is great for a daily driver.

 

The LS6 intake becomes more of a performeer as the HP levels increase. On a stock LS1 there isn't much difference in performance between the LS1 and LS6 intake. I would stick with the EFI for both mileage and throttle repsonse. Some may say that an LS1 set-up is easier to tune than carb. LS1 edit is pretty slick. I would even waste my time with aftermarket heads. A set of ported LS1 or LS6 heads would be more than enough. I geuss I am a little skeptical of their power gains. It is pretty hard to beat the LS6, weiand, and fast intakes that are out there. I would love to read the full write up on that with dyno tests. Interesting stuff here.

 

It's hard to get unbiased data because getting the data is expensive. You have to have a reason to pay the price to get it.

Obviously, manufacturers and magazines have a different motivation than the hobbyist.

Recent magazine cover (forget which one off the top of my head) says "Intake manifold dyno blowout!", or something to that effect. Great, I thought, finally some comparitive data on the different choices out there. Turns out they were all Edelbrock manifolds.

 

Yep, basically have to take a lot of things with a grain of salt.

 

of course,

but in my eyes, the *horsepower increase* isn't the true benfit. its the cost factor, a carbureted all aluminuim SBC is now an affordable option.

 

An affordable option ? Their setup to run a carb is $833, then a decent carb, we'll say $400, now your at $1233 for the induction system, now we'll say you happen to pickup a f body longblock with accessories for 2000, which you might be able to do, you really think a used LS1 intake with throttle body, rails, and harness is going to cost you more than $1200 ??????

 

ls1 longblocks can be found less for a grand. you only need an alternator, and power steering pump. it could be pulled off for around 2500.

and compare 2500 to an all aluminum GENI. the block alone is 4000.

 

. Saw one going for 850 here at JR Martinez, out of a 2001 WS6.

 

You completely missed the whole point....

 

yeah i get your point, you think it would be cheaper and make more sense to stick with fuel injection, and putting a carb on top of a ls1 is pointless, i get the idea. but i don't care.

 

i'd never put a carb on a ls1 if you were going to do that why not just build a regular sb?

 

Because a regular SBC doesn't have 18* heads readily available. He also mentioned the whole aluminum thing. :P.

 

Doesn't suprise me. Just like i've said before, the LS1 intake that everyone thinks is so great isn't all that.

 

You mean the LS1 itself . Good, but it aint the emporer of engines :P.

 

lol, I love my LS1. The heads are freaking outstanding and I am very interested in seeing what one can do with a pair of ported AFR heads, but the intake has a lot to be desired i think.

 

I consider it one of the best small blocks gm ever made. But it still has it's negatives, and unlike some believe, it follows the rules of physics.(but thats not important)

yep, considering the 6.0l truck manifold out performs the ls1 manifold by a lot, and even the ls6 intake by a little, its no surprise a well designed single plane wouldn't out perform the ls1 or ls6 intake

 

isn't the edelbrock ls1 intake a dual plane sort of like the performer rpm?

 

Well, well, well, that's extremely interesting. That should make a LS1 swap a little cheaper/easier perhaps, with it appears at least, a good boost in power.... I wonder if mileage actually suffers much, most of the LS1s great mileage seems to be related to the 6spd tranny.

What can you get a LS1 shortblock for these days? Throw on ported heads from someone like Patriot Performance and a good hot cam and...

 

I've seen a ls1 shortblock as low as $300. Long block at $850 here in town. It is much cheaper to go this route.

 

it is, but the GMPP ls1 carb intake is a single plane

 

I think you are going to see some big numbers soon from guys with hybrid carb manifolds. That is where it's at man! A Carb manifold drilled for injectors would be a sweet setup and give those guys with big cube motors a lot more room to work with.

 

The AFR LS1 heads are awesome, they flow over 300cfm out of the box @.600", compared to 230cfm @.600" for Stock Ls1 heads.





http://www.airflowresearch.com/pages/205cc_mongoose.htm

 

as far as that mag that five7 kid found, that's july's Hot Rod. one of their advertisers, quite possibly the biggest, is edelbrock. I like the magazine, and i like eelbrock, but i would have liked to see how holley, weiand, AND eddy stuff stacks up. I like HR, i even have a subscription, and i have a Performer RPM that does well on my 350. but damn..... variety is the spice of life, ya know?

 

I have never seen LS1 prices close to what you are quoting...LT1 stuff is that much or more in GA. Where are you that LS1 stuff is so cheap?

 

40 horsepower over ls6 intake and 23 over stock?

Sounds a little high to me.