LS1 upgrade to LS6

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Aug 11, 2006 | 01:27 AM

#21

rikhek

Safety Car

Joined: Aug 2005

Posts: 3,968

Likes: 867

From: Tulsa Oklahoma

ttt

Aug 11, 2006 | 02:04 AM

#22

MUKAK

Race Director

Joined: Nov 2003

Posts: 11,061

Likes: 38

From: Menifee CA

Quote:

Originally Posted by chriswtx

But once you do a cam and change to dual valve springs its really not an issue anymore...

so dual valve springs really needed on a cam that will pass CA emissions? or will I be ok with a single aftermarker springs... and what about PUSHRODS? I have new LS2 pushrods...

thanks

Aug 11, 2006 | 02:58 AM

#23

SultansDiamond

Burning Brakes

Joined: Jun 2006

Posts: 866

Likes: 0

From: Placerville Ca

Quote:

Originally Posted by muncie21

Gunnar
Patriot Performance
888-462-8276
Gunnar@Patriot-Performance.com

It's a limited time special, and isn't on their website.

Good prices, good heads. Only problems are they will take over 3 weeks and their springs will have to be replaced unless you want valve clatter - that's an extra $250 or so. Gunnar will explain it all. Your proposed cam is too puny for his springs and he won't swap 'em.

I had installed: LS6 heads, 220/220/114 cam, shorty headers on a 6 speed LS1 and now dyno 378 rwhp, 372 ftlbs tq... This is about as puny an upgrade as it gets, but is making respectable numbers because all the parts are happy... hope this helps. Also, this stuff will pass CA smog all day, and twice on Sunday. The shorty header are smog legal and totally useless in producing numbers just got 'em cheap.... also the only smog legal (CARB certified) air intake is Callaway's Honker.

Now for the sermon... your engine breathes and exhales. Installing bigger heads (which is all about add'l intake/exhaust) with no cam isn't allowing either to work the way they were designed. Gunnar's heads are going to add approx. 30 cfm of air - where's it suppose to go and how is your engine suppose to process it? Any cam of your choice is only about $300-$500 and with your new heads is the best bang for your hp buck. Sermon over...

Last edited by SultansDiamond; Aug 11, 2006 at 03:09 AM.

Aug 11, 2006 | 03:06 AM

#24

SultansDiamond

Burning Brakes

Joined: Jun 2006

Posts: 866

Likes: 0

From: Placerville Ca

Quote:

Originally Posted by patrickC5

Not tp completely highjack the thread but I am curious about the LS1 to LS6 intake manifold swap increases. How many ponies would you be seing with that upgrade cause its something I am looking into as well.

Check out what year car you have on the net and you may find you already have a bigger intake - I think it's from '02... on.

Aug 11, 2006 | 03:13 AM

#25

SLPRC5

Le Mans Master

Joined: Aug 2003

Posts: 9,298

Likes: 4

From: American Canyon Lethal Injection

This is my '97 A4 with 2002 LS6 heads and cam, shorty headers UD Pulley,polished ZO6 TB, LS6 intake, #30 injectors Blackwing air filter. hi-flo cats, X-pipe and ZO6 Ti's.
Read my sig.
MY RWHO is 349.33 and RWTQ is 351.11.
Only thing different I would do is the cam..go with a 220.220.114 LSA.
I'm removing the 3.15 and adding a 3.42.
Referance:
From a tuner..........
"As a reference, I've seen a bunch of Vettes dyno'd at all the Dallas shops. A bone stock '97 auto will do about 285-290. A bone stock MN6 will do 10-15 more. A bone stock Z06 will do about 352.
So, based on all that, you have just about 415 at the crank. you have nothing to fear from C6 cars, they dyno approx 340.
Probably the only way to get more is with long tube headers. But those aren't legal in Cali.
Sooooooo, next mod should be lower gears or a hi-stall converter. I hear either of those will turn a strong auto-trans car into a monster on the street."

Tanx,
SC5
BTW.. thinking about that 220 cam, my present springs should be able to handle this cam..

Last edited by SLPRC5; Aug 11, 2006 at 03:17 AM.

Aug 11, 2006 | 10:05 AM

#26

muncie21

Melting Slicks

Joined: Mar 2005

Posts: 2,252

Likes: 181

From: NE OH

Quote:

Originally Posted by MUKAKsC5

so dual valve springs really needed on a cam that will pass CA emissions? or will I be ok with a single aftermarker springs... and what about PUSHRODS? I have new LS2 pushrods...

thanks

You shouldn't need dual valve springs until you start pushing beyond .590-.6 lift. Or if you use a radical lobe, like and XER. Comp 918 (single, beehive) should do it for a moderate cam.

As for pushrods, you can keep them or change them for hardened ones. Again, if you are staying with a small-moderate cam, then I don't see the need to change unless you want to burn some money. Oh yea, don't try and rev the crap out of it, or you'll end up bending a PR, or a valve.

Aug 11, 2006 | 02:03 PM

#27

SultansDiamond

Burning Brakes

Joined: Jun 2006

Posts: 866

Likes: 0

From: Placerville Ca

Quote:

Originally Posted by SleeperC5

BTW.. thinking about that 220 cam, my present springs should be able to handle this cam..

Aye Carumba!

Why would you ever even let the words pass your lips that you would consider a 220 cam with stock springs? Assuming I read that correctly.

The conquences of breaking a spring can be catostrophic. Nothing to fool around with especially cuz we're talking pennies here.