aaronware76

iTrader: (2)

Stock 110,000 mi short block
Prc stage 2.5 5.3L heads milled .020
Tsp torquer V3
Peak speed ported Fast 92mm intake/92tb
Delphi 85mm maf descreened
Volant cold air w/ Ssra
Kooks 1 3/4 Lt, dual 3" to single 4"flowmaster merge, qtp elec. cutout, magnaflow catback
Moser 9" 3.89 gear trutrac
315/35/17 nitto 555r's
455rwhp 418rwtq thru exhaust
460/424 with cutout open

Darkstar632

Looking to upgrade my stock ported 241 heads and gotta ask why are some guys going with the 2.5 5.3l heads over the 2.5 243 ls6 heads ... Pros/cons?

senicalj4579

iTrader: (41)

Mods and stats in sig...

BrntWS6

iTrader: (7)

For $300.00.

poltergeist 02

iTrader: (65)

Mods in sig. The heads have a little bowl work done to them.

MikeWS6

5.3 heads will bump the compression and are slightly cheaper.
ls6 heads will flow alittle better.

Cant go wrong with either. I saw a car put down 408 with ported 241s and a mild cam. My car on the same dyno put down 414. So you may want to consider keeping the ported stockers.

2002 blue z28

iTrader: (1)

PRC stg.1 LS6 heads
224R cam 112 LSA
FAST 92/92
Hooker 1 3/4 LT's, TSP catted y, Magnaflow cb
Yank SS3200
Stock 10 bolt with 3.90s
409/373

[IMG][/IMG]

thepitstop2010

Stock bottom end LS1
Stock 243 heads
GM MLS headgaskets
LPE GT1 Cam (.563-.563,.219-.228,113LSA)
LS6 Intake with stock C5 throttle body
Vararam CAI
LG Longtubes with Borla Stingers
Yank SS3600
404 rwhp,380 torque

tjs114

GTO M6
stock 241's
TQ3
Pacesetters with 3" custom through Spintechs
Svede

392/371
324/336 - headers and tune stock exhaust from mids back
289/no trq reading - stock baseline

All on the same dyno

SMOKNSS

iTrader: (3)

Old Setup:
Forged 347 block decked .010
Ported 5.3 heads (2.02/1.60) Milled to 58CC
Comp Ultra Gold Rocker Arms
Stock LS6 intake
Ported Stock TB
Vengeance Racing Cam
Stock MAF
SLP Lid
Pacesetter Longtubes
TSP Y-pipe
GMMG Catback
4.10 gears
Built M6
Spec 3+ clutch
275/40/17 Mickey Thompson Drag radials
Vengeance Tune

445/422 on motor

89chevycamarors

1999 ls1 A4 4k stall
224r 114 lsa
Prc 2.5 ls6 heads 11:1 comp
Ls6 intake
Headers
361 hp 387 tq
12.01 1/4 mile

SSEUL8R

My old setup is in my sig. I'm looking for better numbers out of my C5 once I get a chance (and $$$) to work on it. Probably TSP longtubes, TSP 2.5 5.3 heads and SSHT or Torquer v2 cam to start with.

Pharcyde50

iTrader: (11)

Forged LQ4
Cnc 243 milled .030
Eps 234/242 .630/.630
Ported 102
Ati Balancer
Speed Eng 1 7/8 headers modded with HVMC and velocity spikes
OLSD tuned by me

509hp/447tq on a mustang dyno

TXZ28LS1

iTrader: (5)

Livernois motorsports stg 3 ls6 heads
TSP 233/239
LS6 intake
Circle D 5c 4k stall
All bolt ons
3.23

409 rwhp/354 tq.. this is in 109 degree weather..

MikeWS6

Last Spring

423/386 Mustang dyno
PRC 2.5 5.3 heads
228R cam
Full bolt ons

stroked383HSR

iTrader: (12)

in sig.....

Im switching to a Vengeance ported fast 92mm intake with a fast 92mm tb and got a 104 fast toys lid

gonna ditch the MAF and go SD also

SO i should be up in power...I hope

bigantws6

iTrader: (12)

Sbe ls1
Stock 241
Futral f14 232/234 .598/.598 112
Qtp 1 3/4
2 1/4 dauls
4kstall
353whp 328 tq
Full weight best time on 3.23 gears 11.8 and 1/8 th been 7.4
Dont go off dyno number go off best et and good luck

1FineSS

CNC'd 241's
Torquer v2
Fast 92/92
EDGE 3200
Speed Density

420rwhp/405rwtq

02ws602wrx

Yea agree lots of 5.3 heads was wondering y not many have afr 205s that's what I'm thinking of

Rise of the Phoenix

iTrader: (27)

Price. 5.3's are considerably cheaper.