silverLSWON

iTrader: (16)

my dad has a 01 ss with the TSP torquer 2 cam on a 112 lsa+2. he also has full bolt ons. he asked me to put a good set of heads on his car but i'm kinda unsure which heads to pick. i was thinking PRC 2.5 5.3's or the PRC 2.5 LS6 heads. money is no object with him so i am not comparing price between the 2 heads in that area. i also don't want to get a set of trick flows or AFR's either lol. i narrowed it down to these to sets so let me know what you guys think. he also plans on getting a fast 90/90 setup also.

LSWNDR

LS6 STG 2.5 PRC texas speed heads are awsome, but the 5.3 heads are a good bang for the buck and i've seen 440RWH-429RWT through a stock intake, throttle body and cats lol near stock driveability dude no **** can't wrong with either head

krazy4

iTrader: (5)

PRC 2.5 5.3 are great heads! Proven combo.

Gun5

iTrader: (37)

5.3's.. they flow the same as the LS6's more compression and have better port vol

silverLSWON

iTrader: (16)

really?? i figured the ls6's would flow a little bit more. i didn't see any flow numbers on the LS6 heads on texas speeds site. just the 5.3s

NC98Z

iTrader: (1)

When I was running the TV2 I was cam only to start with. When I bought my first set of heads I got the PRC Stage 1 LS6 heads. My 98Z picked up 50 RWHP on the dyno with them. They didn't require flycutting and the car ran the best of a 12.01@114mph in the 1/4 mile and was great on the street. I would go with the same thing Stage 1 PRC LS6. Now if you had reliefs in your pistons I would say go Stage 2.5 LS6 and have TSP shave your chambers to 59cc. Best advice would be to call TSP and ask John R. or Jason.

FlashLCD33

iTrader: (8)

I had this same question, and I pm'd a TSP member here with no response

From what I've gathered, the 5.3s are the way to go. Make sure to pick up an oil pump and timing chain while you're at it, if you haven't already.

silverLSWON

iTrader: (16)

he allready has a oil pump and chain but thanks anyway

silverLSWON

iTrader: (16)

he has a vert which is kinda heavy. i he wants 11 sec passes, thats y i figure i would go up to the stage 2.5 ls6's. but i'm not sure if it's over kill. i will call tsp speed tomorrow and see what they say. i figured someone from tsp would've chimed in by now

Jason 98 TA

iTrader: (4)

I have some dyno data that can get you really close on the power output from that combo. I engine dyno tested the Torquer 3 & 228R next to each other with the PRC Stage 2.5 5.3l heads. Give us a call & we can fax a copy of the dyno sheets from those pulls

silverLSWON

iTrader: (16)

^^^ sounds good i will do that

ZMONSTER!

iTrader: (9)

Jason 98 TA,
do you have a dyno test of something like a 224 or 228 between the PRC ls6 and 5.3 heads?

blown03mustang

no to hijack but do the TF's work with the torquer 2? what kinda gains can be had with them?

N4cer

iTrader: (11)

Do you know you're doing this backward? The idea is to buy the best heads you can buy, then get a cam that matches. Not vice-versa.

'02 WS6

iTrader: (73)

Not to argue, but most people on budgets get a cam before heads.

To the OP....I went through the same dillema as you, and ultimately chose the 5.3 2.5's, but I got ahold of some Craig Gallant GTP stg 2+ 241's and went w/ those instead. I talked to Jon @ TSP and he recommended to me the 5.3s over LS6 because, of the 5.3s runner length. Those w/ .040 cometic gaskets will give you about 11:1 compression, and will clear w/o flycutting as well.

novaflash2002

iTrader: (51)

ls6 heads. if they are both milled, the ls6 heads will need to be milled more to match the same compression of the 5.3. butthe combustion chamber is bigger in the ls6 heads and flows better around the valves. i know it sounds confusing, it like deshourding the valves.

TXZ28LS1

iTrader: (5)

since your running a TSP cam, i would just go with one of there heads. they will know what will work best with that cam. but if i had the money, i probably would run the trickflow heads with that torquer v2 cam.

RyderTA

iTrader: (3)

I havn't played with the ls6 style heads but my t2 with the 5.3 heads seems to be doing good. With a LS6 intake and heavy 9" rear I put down 414whp/380wtq here in Utah. I plan to change to LS7 lifters over the winter and i'm going to change to a .040 head gasket while i'm there.

Blacklightning744

iTrader: (7)

i say i doesn't even matter both heads will give you tremendous results, i'm goin with the 5.3s myself, but thats because they cost less, i have read about ppl who also use this combo, and they all say that they're very happy

WSsick

iTrader: (13)

so money is no object buy you dont want AFRs or Trickflows? unless you typed it wrong, that makes no sense