Cam for L92 Heads: Lessons Learned

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Feb 21, 2010 | 02:04 PM

#221

Nimitz87

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From: Cooper City, FL

Quote:

Originally Posted by jasonsnova

guys what do you think about this...i have a lq4,ls3 heads, and a vic jr intake(carb) ive been trying to get a feel for a cam, i would like to see atleast 550 fwhp+ i plan on milling heads as much as possible. so friday i called texus speed to get a recommendation from them...they recomended

http://www.texas-speed.com/shop/item...=1055&catid=44

according to them i'm very limited because of comp and ptv and stated that if i went bigger i'd have to flycut and and would loose more comp and it would be a wash....
now comp got back to me and gave me this

http://www.compcams.com/Cam_Specs/Ca...csid=1090&sb=2

even smaller....
carcraft did a test with the the next cam up from the one comp suggested and made 551 hp but alot of people say it will have poor driveability...
any ideas car is a nova with a t56 weighing 3350 w/driver. so far i'm leaning towards the texas speed cam....but would like options...

that first cam is very similar to the cam I was spec'd by pat G however I am going to flycut...its almost a must with milled heads and the huge valves.

check out this thread too

https://ls1tech.com/forums/dynamomet...p-446rwtq.html

Chad

Feb 21, 2010 | 06:47 PM

#222

WKMCD

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Quote:

Originally Posted by Texas_WS6

Why did you decide to go with a Darton sleeved block instead of a LSX?

This is in a Vette and I can't see putting that much additional weight over the front wheels. The Darton sleeves give me the best of both worlds,

BTW: 605/588 first numbers.

Feb 21, 2010 | 08:07 PM

#223

Texas_WS6

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Yes, the extra weight would screw up the handling, I can see the justification in that.

Mar 15, 2010 | 04:08 PM

#224

99T/AVert

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Sorry guys if this question is being beat down like a dead horse but I when it comes to cams I see waaaay too many numbers and it gets confusing for me.

I am building a lq9/415 (maybe a 425) so what would be a nasty beastly loping cam. I love the lope that the MS4 makes plus the great reviews, that is why I went with it.

Here are my components...

MS4 @ 111-LSA
WCCH stg2 L92 heads
LS3 intake (might go with a super vic & elbow)
FAST 90mm TB
Pacesetter LT
TSP ORY
Dual 3'' cut outs

Mar 15, 2010 | 04:26 PM

#225

WKMCD

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From: Northern VA

Quote:

Originally Posted by 99T/AVert

The problem you're facing is that a "big loping" cam is probably going to make less power than the right cam with the L92 heads and LS3 intake. An elbow with a single plane will kill the power. If you want to use a carb manifold, use a carb TB.

Mar 15, 2010 | 04:56 PM

#226

99T/AVert

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Quote:

Originally Posted by WKMCD

So that means a cam with a LSA around 114? If I was reading right in my searching about cams, the LSA is what determins the lope.

So what would be a good cam?

As for the intake, I like Cary's intake but I cant find the price. I have also been reading that if I go with a 115mm front style TB that it will be just as good as a carb style.

More input would be great!

Mar 15, 2010 | 05:06 PM

#227

sixt9er

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There is a combination of factors that determine the "lopey" characteristics of a camshaft, not just LSA...duration specs on the exhaust side, along with LSA are among the biggest factors...

Mar 15, 2010 | 05:29 PM

#228

Nimitz87

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From: Cooper City, FL

Quote:

Originally Posted by 99T/AVert

little more to it than that...my L92 spec'd cam is a 227/235 .614/.618 113 + 4

the L92's are very specific when it comes to valve events...miss them and you leave a ton of power on the table, read this thread and you'll learn a lot as well as doing a search, some good info is to be found when you sift through it all.

Chad

Mar 15, 2010 | 05:38 PM

#229

Shawn @ VA Speed

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Quote:

Originally Posted by 99T/AVert

you are about as far away as possible from the right cam for l92's.
stay with short intake durations.

Cary's intake starts at $825.00 with fuel rails non ported.If you're interested in one,let me know,i'm the #1 Performance Inductions dealer.

A frt style tb will NEVER be as good as a carb style-air does not like to turn,the straight shot is always better

Mar 15, 2010 | 07:15 PM

#230

Patrick G

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Quote:

Originally Posted by 99T/AVert

You're in for some disappointment with a Combo like that. Cam with too much overlap, headers too small, wrong intake manifold (should be FAST 102 LSXR). If you want lope, you should get a cam with the proper amount of overlap then have your tuner set the idle speed to 600 rpm with low timing. It will sound like a freaking pro-stocker while still knocking down excellent street manners and big power.

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Mar 15, 2010 | 08:45 PM

#231

pink_bits

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hi everyone i just got a ls3 427 from lme, bryan spec a cam for me its 248/260 @.50 lift is .631"/.621" on a 114 with a icl of 110. The motor has got l92 heads with Intake valves Manley stainless 2.165” and Exhaust valves Manley stainless 1.600” on top of them it has a fast lsxr 102mm manifold and t/b. The car scales in at around 3950 lbs the car is a 4l65 with a 4200 stall.
Thanks Heaps
Simon

Mar 15, 2010 | 10:06 PM

#232

Patrick G

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Quote:

Originally Posted by pink_bits

Awfully big cam for LS3 heads. Too big (overlap-wise). I'm sure it will make good top end power, but you're going to be miserable with the low rpm street manners unless your tuner is a master (or you're really young and couldn't care less about bucking and surging).

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Mar 15, 2010 | 10:22 PM

#233

99T/AVert

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Quote:

Originally Posted by Patrick G

Well I know that the combo is not at optimal specs but I needed to start somewhere. I think I will be going with a Cary intake and 4150 when I recoup the loss from the initial build.

Why are the pascesetters too small? I see everyone running them for the most part. Those Kooks and QTPs are too expensive does anyone make a bigger header around the pacesetter price?

As for the cam, I guess I will sell the MS4 but then what? IF I want this --> It will sound like a freaking pro-stocker while still knocking down excellent street manners and big power. lol then who makes the cam I need? Like I have said a few times now in other threads lol, I want it to sound as if the car is trying to hock up a small child just after it ingested him through the intake lol but of course I dont want to sacrifice power.

Mar 15, 2010 | 10:28 PM

#234

99T/AVert

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By the way, does anyone know where I can get the cam that Futral used on this setup. This is the thread that got me interested in the Cary intake.

https://ls1tech.com/forums/dynamomet...-intake-s.html

A 408 making over 550 is just nasty and if I can duplicate the setup on a 415 (or 425) then I think at 600whp is realistic... no?

Mar 17, 2010 | 12:18 AM

#235

Spectre86

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From: Oregon

Quote:

Originally Posted by Patrick G

Awfully big cam for LS3 heads. Too big (overlap-wise). I'm sure it will make good top end power, but you're going to be miserable with the low rpm street manners unless your tuner is a master (or you're really young and couldn't care less about bucking and surging).

Mar 17, 2010 | 04:10 AM

#236

Petraszewsky

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Only 2 more months to start up!!! Can't wait to see how it runs with the 227/239
.614/.624 115+3 cam....Just got a SST3600 convertor to try to emphasize the cam's rpm range....

Mar 17, 2010 | 04:32 AM

#237

Nimitz87

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From: Cooper City, FL

Quote:

Originally Posted by Petraszewsky

Only 2 more months to start up!!! Can't wait to see how it runs with the 227/239
.614/.624 115+3 cam....Just got a SST3600 convertor to try to emphasize the cam's rpm range....

who spec'd it and what lobe?

its pretty similar to mine, what motor is it going in?

Chad

Mar 17, 2010 | 05:01 AM

#238

Petraszewsky

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It's a Vengeance Racing LS3 Stage II Cam...And it's in a 6.0L ....My heads are umilled/unported...using stock LS3 head gaskets...How's yours drive???

Mar 17, 2010 | 05:15 AM

#239

69LT1Bird

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Quote:

Originally Posted by Petraszewsky

It's a Vengeance Racing LS3 Stage II Cam...And it's in a 6.0L ....My heads are umilled/unported...using stock LS3 head gaskets...How's yours drive???

That should be a nice cam. You may want to think about some bigger long tube headers. The 1 5/8 isn't gonna get it.

Mar 17, 2010 | 10:20 AM

#240

Petraszewsky

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Quote:

Originally Posted by 69LT1Bird

That should be a nice cam. You may want to think about some bigger long tube headers. The 1 5/8 isn't gonna get it.

How much of a restriction do you think the 1 5/8 will be? I can get a set of 1 3/4 longtubes ( inside the frame ) or Hedman's longtubes with 1 7/8~2 primaries...

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