Jurgen

I am posting about my cousins ls1 camaro we installed some long tube headers ls6 valve springs Futral cam 224"/224" .588"/.588" 114 + 4 Lsa and a tune . It made 322rwhp or so through a auto . He wants to make more power its a 98 ls1 and the head casting is 806 if we go with a 243 casting head and a ls6 intake approx how much of a gain will he see ?

got-a-ls1

iTrader: (12)

well 322 seems really low for a 224 even with stock heads/intake so the dyno may be stingy... i would guess 360-370 rwhp properly tuned if the 243's arnt ported and through a auto.

On a side note i think i would also consider changing the valve springs as ls6 springs may or may not take a 224 at .588 lift for very long. If you drop a valve because of failed valve spring i dont think you'll be happy. Best insurance would be to buy a spring designed for .600 lift or over... Remember the ls6 springs are designed for a .550 lift cam with mild lobes, not aggressive aftermarket lobes.

Jurgen

thanks got-a-ls1 what valve springs do you recommend we go with ? so between the 243 heads and ls6 intake we should see at least 30rwhp ?

johnLs1camaro

iTrader: (28)

was it tuned?

my car when it had a stock ls1 intake,headers,ory,lid,224-230 cam. it dynoed like 333 untuned and then when tuned it made 374 or something like that.

LCplmarine98

iTrader: (9)

HE says he has a tune. still low numbers but does anybody have anymore info? I am going to a similiar setup and would like to see some numbers.

Jurgen

I dont know why the low numbers i know on my car we had the Torq converter locked in 3rd when we made the pull the guy that tuned the camaro said he could not lock the TC . I am just hoping the swap is worth the trouble .

PAGregSS

iTrader: (10)

Sounds to me like the TC never really locked. As for springs, the PAC918s would work well with that cam. I would think he'd gain around 40 hp with the intake and heads.

crainholio

iTrader: (2)

What got-a-ls1 said is fact, LS6 springs aren't what you want for that cam. The lobe ramps and net lift aren't what they are designed for.

I only use dual springs as insurance against a dropped valve. I'm currently running Crane springs, but they can't be bought anymore so consider Comp or Patriot. These need '98 valve stem seals but no big deal.

Jurgen

I know the tuner could not lock the tc on the dyno . So comp springs and 98 valve seals then .Thanks guys so i guess we will be looking for about 30-40rwhp gain we'll know for sure after the dyno .

Mac 2002 SS

iTrader: (6)

you should be around high 390's to low-400's rwhp with a set of LS6 243 heads . we have a similar set-up ,except your cuz's cam has more lift than mine. just like everyone else said, with a dyno and real good tuner,he should be able to get what he is looking for .

TooLateVTEC

iTrader: (2)

It could be floating the valves on the dyno which would make low #'s as well. LS6 cams (02-04) had .550 lift and your over that by a good amount.

Change springs IMMEDIATELY or your going to be rebuilding the motor from a dropped valve.

Jurgen

Thanks guys I spoke with futral motorsports where we got the cam from and Charlie told me that the tc would have to be locked thats one possibility why the numbers are low . He just picked up a complete ls6 intake and we are looking for some 243 heads and some comp springs .
Thanks for helping us out this gm stuff is new to me if it was a ford it would be a different story .

Red99TA

iTrader: (11)

Definitely changeout valve springs for some 918's or duals first and foremost. Stepping up to 243's w/ an LS6 intake is probably only worth 30-40RWHP at most. For comparison a C5 Z06 with a 224 cam like that and 243 heads with an LS6 intake should make around 400-415RWHP through the MN12 tranny on a dynojet dyno.

Jason 98 TA

iTrader: (4)

We offer the Stage 1 LS6 heads that typically gain 40+rwhp for right at $1000 or so. That combo will work really well & we can mill them specifically for your 224 duration camshaft. Check everything over closely, I think you should be able to find more power in your current combo. Let us know if you need a set of stage 1 LS6 heads to complete that combo!

http://www.texas-speed.com/shop/item...d=649&catid=20

HitmanLS1

iTrader: (16)

From what I was told the 98 head's have alot more potential then people give them.

PAGregSS

iTrader: (10)

You can't port a '98 head and get the same gains for the cost of a stock 243.

crainholio

iTrader: (2)

I was told that you were told wrong.

DANOZ28

iTrader: (1)

not sure about low dyno #'s maybe ask if it was a mustang dyno. ls6 springs are only good to 570 lift so at 588 lift your in the danger zone with those springs. TSP can hook you up with those heads plus upgraded springs. good luck. also check if your A/F air fuel ratio is about 13:1 , you may need a better tune.

Jurgen

Danoz28 its not a mustang dyno .
What else do we need for the swap ? I dont know what size the stock injectors are but the ls6 intake we just got has 28lbs injectors and 75mm Throttle body . what Maf throttle body injectors head gaskets do we need ? Arp head bolts or stock ? I am thinking about a Asp underdrive crank pulley while we are there .
What should we do about gears they are stock now but we are thinking about some 3.73's i just dont know how long the trans and the rear end is going to last .
Thanks for the help guys .

Jurgen

Is this the kit we need ? http://www.currymotors.gmmotors.com/...701LS1LS6.aspx or do we need 6.0 headgaskets.