G5X4 + LS6 heads + bolt-ons =??

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Jul 20, 2008 | 01:43 PM

tnmotown

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From: Cali

G5X4 + LS6 heads + bolt-ons =??

Ok i've been switching setups for the past few weeks but finally got it down now. I've got the parts coming in this week and should be doing the install within a couple weeks. I've chosen the G5X4 with stock LS6 heads and have all the complimentary bolt-ons already. I have searched to see what numbers other people have with this combo, but not too many do. So....what HP/TQ do you think i should get with this??

Mods are:
MTI lid
P&P TB
SLP MAF
LS6 Intake
PRC LS6 Stage 1 heads
G5X4 cam
ASP pulley
Pacesetter LT's w/ ORY
Hooker Catback
M6 with 4.10's

Would this be a solid 420+RWHP combo? also you think i would benefit with bigger injectors? with some drag radial i just want a 11 sec pass

Last edited by tnmotown; Jul 23, 2008 at 06:52 PM.

Jul 20, 2008 | 04:15 PM

firefighter813x

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From: Charleston, SC

11's for sure with that combo. I'd say cam only with the G5X4 with good tires and 60ft time will get you 11's, so with heads it's shouldn't be difficult. Would you race it at Sear's Point? Infinion, or how ever you spell it?? lol

Jul 20, 2008 | 04:19 PM

Frost

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From: Richmond VA

get those heads milled!

Jul 20, 2008 | 05:59 PM

CaMaRo67RS355

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it should be over 410 cam only with a good tune and the stock ls6 heads guess is around 429 ish hp 398 trq

stock ls6 heads arent going to make alotta difference now if you get the ported and milled youll pick up some good power

Jul 20, 2008 | 06:05 PM

sidewayz28

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From: seattle

Quote:

Originally Posted by CaMaRo67RS355

stock ls6 heads arent going to make alotta difference now if you get the ported and milled youll pick up some good power

yeah? and im SURE you have personally used stock ls6 heads right?

dont speak about something you have no clue about.. i made over 40rwhp on a mustang dyno from a swap to 243s and a 90/90
the 243s flow much better then 241s

Jul 20, 2008 | 06:06 PM

sidewayz28

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From: seattle

you might need injectors, once you get it tuned you'll be able to tell. youll probably be very close to what your shooting for

Jul 20, 2008 | 09:13 PM

tnmotown

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From: Cali

sweet! yeah i would like to get them ported but really dont want to spend the extra money. Lou from LG said mill them to 59cc but i would have to flycut the pistons. I really dont want to do that, but he said it will be great for that cam.

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Jul 21, 2008 | 12:28 AM

tnmotown

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From: Cali

yeah i know, its just fly-cutting will be expensive. I might see if i can mill them to 62cc and get by with PTV.

anyhow, any other guess for power wise?

Last edited by tnmotown; Jul 21, 2008 at 08:49 AM.

Jul 21, 2008 | 09:11 AM

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John02SS

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Even at 62 with a X4 it will be close. The cam makes power! I've had it in a combo before with a set of old ported ls6 heads and a fast and made 470 thru a 12 bolt.

Jul 21, 2008 | 10:27 AM

#11

tnmotown

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From: Cali

Quote:

Originally Posted by John02SS

Even at 62 with a X4 it will be close. The cam makes power! I've had it in a combo before with a set of old ported ls6 heads and a fast and made 470 thru a 12 bolt.

damn...its making me wanna get a FAST 90 setup now!! lol

anyother combos guys with this cam? or any other guesses? keep them coming!!!

Jul 21, 2008 | 11:24 AM

#12

sidewayz28

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From: seattle

go with a fast intake if you can afford it! it would really wake your set up, up

Jul 21, 2008 | 02:04 PM

#13

tnmotown

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From: Cali

Quote:

Originally Posted by sidewayz28

go with a fast intake if you can afford it! it would really wake your set up, up

i'll see what my budget can allow. i would like to have a FAST90 setup though.

Jul 21, 2008 | 03:01 PM

#14

sidewayz28

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From: seattle

im right there with you man, i dont want to flycut my pistons either... so thats why i chose to not even mill my heads.. My 243s w/ stock gasket will give me plenty clearence (i believe) for what i want. if i had the tools, and knew how to measure PTV clearence.. i say it would be VERY VERY wise to do so.
I like your nice emissions friednly set up though!

Jul 21, 2008 | 08:24 PM

#15

tnmotown

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From: Cali

thanks, and screw emissions!! hahaha

instead of milling them and having to flycut, im probably just gonna have them Port & polish to help the flow a little more

Jul 22, 2008 | 12:07 AM

#16

sidewayz28

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From: seattle

thats... probably the best idea i've heard in this thread

let me know where you'r getting them ported from...im curious about getting mine ported out a little

Jul 22, 2008 | 12:52 AM

#17

CaMaRo67RS355

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From: Rock Hill, South Carolina

Quote:

Originally Posted by sidewayz28

yeah? and im SURE you have personally used stock ls6 heads right?

dont speak about something you have no clue about.. i made over 40rwhp on a mustang dyno from a swap to 243s and a 90/90
the 243s flow much better then 241s

ud actually be surprised i actually have them on my car now

u did say u gained 40 hp on a dyno with stock 243s and a 90/90 setup well duh thats possible take the 90/90 setup off and u gain 20 or so horses like i said, while stock 243s flow better than the 241s id go ahead and get them ported and worked and make a more significant amount of power

Jul 22, 2008 | 01:01 AM

#18

sidewayz28

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From: seattle

well lucky for us hes doing exactly that

Jul 23, 2008 | 11:09 AM

#19

Louis

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Mill them!!! If they are off the car, do yourself a favor and mill them. It helps everything across the board. Compression is your friend with cams of this size

Ill make a killer deal on the flycutting tool that you cant refuse. Trust me, you will thank me and Frost later