Heads/cam LT1 can't compete with an LS1 unfortunately, if setup right.

 

yeah, if equally modded, the LS1 is gonna be faster, due to better design.....................but to mod them equally, it costs alot more for the LS1.....so it evens out.

 

Another vote for Advanced Induction
did 395rwhp and 373rwtq stock bottom end @ 137k miles with shot rings burning oil smoking like a chu chu train

as for AI's cars at the track my car broke the week i was going to take mine...

 

N.A. they can't, LS1s will just walk off. But under boost they're VERY similar. Boost will make up for design inefficiencies as long as you have good valves and adequate port/intake volume.

I too have only heard good things about Lloyd's work, and he seems like a nice guy too.

 

Boost would be fun, but, cost of LS1 buy-in vs LT1 and then modding with a blower, well... I dont have alot of confidence in blown stock bottom LT1 cars though, they can survive to a point, not my thing though.

However NA, you can make excellent power with just a cam on an LS1, so cost, depends how you look at things, how you look at passing smog, etc

 

Just got to give Futral a plug. He build my engine. Great engine builder and yes he does have most of his heads worked by Larry Meaux from Lafayette, La. Meaux does some awesome work. I couldn't afford him so i had Allan Futral port mine and he got around the 275/203 for about $400 so i was happy. Oh for those interested Allan is building some of the fastest NA stock displacement LS1's around. Check him out at www.futralmotorsports.com

later,
Jomo

 

Oh it IS fun. I'm a boost junkie if you can't tell. That's why the LS1 vs LT1 junk doesn't matter to me too much. JUST BUY ONE, BUILD IT, AND BOOST THAT SUCKER!!!

TURBOCHARGERS

 

Another vote for Lloyd..Also heard good things about AI...

 

97RedSS, do you have any 1/4 mile #'s for your mods in your last signature?

 

<rant on>
Doc,
I respect everything you say here on the board,but lately its been kinda an lt1 bashing or that cam is too small or the ls1 is superior.We all know that the ls1 is a far better motor than the lt1,but give the lt1 some credit.Say modded lt1 made 500rwhp and an ls1 made 500rwhp,is the lt1 any competion for the ls1?I think so.
I agree it takes far less to achieve the results in an ls1 car than lt1.Most of are lt1 cars out there are "paid off" so there is no monthly payment and funds could go to the motor.Where as ls1's will still yield you a nice monthly payment and less $$ for mods.
It sounds like some us bashing the imports out there."yeah well it'll take you more $$$ than me to achieve the the same hp#'s or 1/4mile times.How much money do you have?How fast do you want to go?Thats what it all boils down to I guess!I'm in no way trying to debate anything,just voicing my opinion!

<rant off>

 

Abdullah,

Really, dyno numbers, properly and honestly acquired (no removing belts, no racegas or undriveable tunes, etc. w/o telling people) are better for comparison than track time for comparisons, to me anyways. Car performance relies on so many extra variables. My buddy rich's stock eliminator car literally makes just under 300hp, but it runs 11's... so most people think it makes power, when in reality it's pitiful on the dyno. Of course you can look at terminal speed, assuming the cars arent ripped apart.

Most of the guys we deal with are road race oriented, but the stock shortblock LT1 guys usually trap in the 117-121mph range. I know waswa with our econoport stuff made 406rwhp SAE through full exhaust and ran just under 118mph the other day (117.7 i think it was), but couldn't ever hook it up so his ET's were only mid 12's. Of course you can see in his thread, he needs tuning tweaks, so if he can hook it up it should easily run 11's. As far as our lsx stuff... well we were about the first people who made over 470rwhp on stock shortblocks without big hydraulics.... of course a week later a couple places miraculously pulled 40rwhp out of their asses . For reference.. one of our first LS1 test 'maros ran 123mph with a small (hotcamish) HR and that car "only" made 430ish rwhp. Figure anywhere from 121-127mph for alot of the LSx stuff. Of course the big inch 600+hp pump gas setups trap higher .

Just depends on what you want


vampyr95Z,

Why do LTx guys take it so personally that GM engineers aren't terribly stupid and improve upon things as time goes by? I dunno about most people, it may matter to most.. but getting beat is getting beat. I've never had anyone tell me they spent less $ to get less... if they did I'd probably just say, "yep."

Evolution, it's a good thing . Soon enough the LSx stuff wont be as expensive to get into and people will go nuts with them. Hell, they're already starting to .

EDIT: For the few people who think head stuff should be terribly cheap.. there are places you can go to get cheap stuff . Really though, you need to look at what you get for the money. If you're buying something ported for $600, then you put $500 in parts in it (unless you cheap out there too, then you can save a little $, but thats the last place you should skimp IMO), and another few hundred dollars in machinework in it... where's that leave ya? Something with halfway decent parts and machinework that's supposedly ported for under $1k? Sure, but it's a $300 port job. Good for the wallet, better than stock, but it's going to get waxed every time by decent stuff.

When it comes to making power, $1000 is nothing unfortunately. Otherwise everyone would be going alot faster

 

No biggy, feel free to voice I am simply saying, dont dream of an LT1 heads/cam being better than LS1 heads/cam, unless something is very, very wrong. I have heard of heads/cam LS1s only doing 370RWHP (bad heads).

If you already own the LT1 and its payed off, then I'm certainly not saying throw it away and start over, just want to make sure the facts are known, there is no reason to compare the two because you can't compete unless you are going to give something up, like low end, or going solid vs their hydraulic setup, or etc

Regardless of all that, 400+ RWHP is still fun, it doesn't have to be 450+ to make most people happy I would say, it is still a HUGE jump from being in a 13/14 second car.

 

The guy is over 14:1 at WOT, definately has more in the car.

 

anyone dyno with combo motorsports heads?

anymore dyno/times with lloyd heads?

 

Dr.Mudge, when you said :

The guy is over 14:1 at WOT, definately has more in the car.

you meant by 14:1 the Air/fuel ratio?