Im not sure if anyone else has seen this guys claim in the dyno section.

Hes pretty much claiming +500RWHP with a cam only car.

Anyways is this even remotely possible?

Here's a link to the thread for whoever is interested..

https://ls1tech.com/forums/dynamomet...ossible-n.html

 

I think it is possible. But not something you would just throw together based on true shelf parts. There would be a lot a of tweaking and tuning and tweaking. All that stuff we ignore because it's only worth another 2-3HP for a lot of work...all that stuff can add up to some impressive numbers. Then dense, dry air on a friendly dyno.

And in the link, the poster clearly says any heads, any supporting mods, etc. So "cam only" isn't the right way to describe. This is more like "stock cube LS1 with LS6 intake and anything else." NNBS actually might be worth considering if we are talking any plastic stock intake. Does "any heads" include small bore L92? Then LS3 or L92 intake?

Bottom line, IMO yes, doable, but wasteful unless you are going to win a cash prize for most HP from 346CI. More time/cost effective to just get more cubes so evertything doesn't have to be *just* right to make your number. Then realize it's just a number and doesn't really matter in the whole scheme of things.

Again..my opinion.

 

I believe the OP said he was using stock 243 unported heads ( read this thread a few days ago might be mistaken)

Heres what I have a hard time believing. How is this guy literally the only person who can achieve a power level like this without full bolt-ons?

I guess every vendor that sells us go fast parts has no idea what they are doing. Not bashing any vendor btw, just find this hard to believe. A lot of builds with far more upgrades then the OP don't even hit 575RWHP.

Found his setup: I don't see this combo backing up his claims. Does anyone else? I mean if it were really that simple everyone would have 500+RWHP like this guy.

 

No off the shelve parts. Light everything, very much have to pay attention to detail. Not a common practice really.

 

First off I would call BS on this. If he was able to get that much power on a "cam only" then why can't everyone else. < Also, he could have meant nitrous added instead of naturally aspirated.....if that is the case then his number are legit >end sarcasm

 

please list these details you must pay attention to for achieving 500whp with a cam only LS6?

Most Mamo 346 builds end up in the 480 whp range and there are no shelf parts used in those setups.

 

The details would be the whole car and chassis. He reved it high, very stable valvetrain, pretty sure it was a zo6 so 243 heads, very light clutch and flywheel, super efficient trans, etc etc light wheels and brakes.

Hell probably ran 0w20 oil, big stuff computer it is a max effort deal so there is a ton of tricks and would be very expensive. I don't know his car or everything about it and his claims are high. But his car runs the number that's all I care about it.

 

This is basically what matters right here.
If you assume 10% driveline loss (just as a number) and do the math it comes out to about 1.66hp per cube which I can believe.

The 700+hp 388 he speaks of comes out to over 1.9hp per cube which seems to be alot. however if you consider a built 427 at 1.9 per cube youd be making 811hp. at 2hp per cube it would be 854hp, which happens with high effort drag engines.

The numbers do add up. The key is the entire setup is optimized for one goal, and the first step is to open your wallet wide open.
The car also runs the number, which is all that matters.

 

Remember too: HP is basically torque x RPMs and he is revving the **** outta thing. Big advantage, along with all the other things talked about.

 

Like those 4.10 gears help too. Only a small handful have hit 500 doing everything.

 

I love reading the half-wit comments from all of the catalogue engineers on this site. The builder optimized his combination and made it happen. Improbable does not mean impossible.

 

The entire thread sounds like bs........

 

Not bs at all. His et/mph back it up.

Btw.....he is speaking dyno jet numbers. My bolt on ls6 will likely be nearing 440whp maybe more(dyno jet) after these few changes next time. I don't think 525 would be outta reach with the right cam and on a fuel. Some of these special fuels guys are running these days can be worth quite a bit. Even just e85 is about 15 hp.

Ls engines love rpm.....don't be skuurrred of it.

 

So you are planning on hitting 440whp with a bolt-on LS6?

 

Should. Last time on a dj i made 413.....I've added 18 hp since then so you're looking at 431~ but that woukda been through a 10bolt. We actually made the ole' ls6 make 423 on the dyno dynamic but turned it down a bit for safety. So that woulda been 436 on the dj. I would think some changes like x pipe td, a crank scraper, 100mm maf or larger and i may bypass the ps for ***** and giggles would put me at 440whp or more.....still on pump gas.

If i decide to try some e85 we coukd be looking at 460ish.

But i do have a 9" now....so maybe not

 

I gained a few hundred rpm on peak HP with the X pipe over open headers. Curious to see how much the scraper helps

 

Subscribed...

 

between 2 and 3 years ago I believe it was Pat G put down over 500 hp at the wheels spec-ing His cam which I believe was His 3rd cam while attempting that # . Not sure of too many other details other than it was His dd and a Pontiac

 

^It also had Mamofied AFR 205 heads, ported Fast 90, and a good flowing exhaust. All the details were addressed to hit 500 whp.