Power difference between 5.3 and LS6 heads
#43
TECH Enthusiast
iTrader: (5)
Join Date: Jun 2006
Location: Long Beach MS/Birmingham AL
Posts: 641
Received 0 Likes
on
0 Posts
![](https://ls1tech.com/forums/images/ranks/ls1tech10year.png)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
http://texas-speed.com/shop/item.asp...d=134&catid=40
1424
tea stage 2
$1745.00 With new GM 799 cores While supplies last.
Based on the flow charts provided the stage 2.5 actually flow less than the stage 2 if you look at it. The only advantage is oversized valves. Comparing apples to apples so to speak is the prc 2.5 vs tea 2.
1424
tea stage 2
$1745.00 With new GM 799 cores While supplies last.
Based on the flow charts provided the stage 2.5 actually flow less than the stage 2 if you look at it. The only advantage is oversized valves. Comparing apples to apples so to speak is the prc 2.5 vs tea 2.
#44
TECH Resident
iTrader: (7)
Join Date: Sep 2006
Location: Flint, MI
Posts: 846
Likes: 0
Received 0 Likes
on
0 Posts
![](https://ls1tech.com/forums/images/ranks/ls1tech10year.png)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
I'm still not seeing the $600 difference unless you are comparing stage 1 ls6 heads from prc ?? Either way its a moot point just get the best that you can afford and works with what you want.
#46
TECH Enthusiast
iTrader: (5)
Join Date: Jun 2006
Location: Long Beach MS/Birmingham AL
Posts: 641
Received 0 Likes
on
0 Posts
![](https://ls1tech.com/forums/images/ranks/ls1tech10year.png)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
PRC Stage 2.5 5.3 $1,134.99
$610 dollar difference
Just for comparisons sake
PRC Stage 2.5 LS6 heads $1,424.99
Seems like most choose the 5.3 heads over the ls6 for the midrange grunt.
#49
11 Second Club
iTrader: (2)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Patriot performance LS6 has
.200 lift 140
.300 202
.400 246
.500 280
.600 304
Now TSP LS6 stage 2.5 has
.200 147
.300 209
.400 258
.500 294
.600 316
Now look at the difference in flow TSP has
.200 7cfm more
.300 7cfm more
.400 12cfm more
.500 14cfm more
.600 12cfm more
Now it may not look like much, but this means that when your valve is opened at .400" it is flowing more air with the TSP heads than the patriots. From what I have read, Its better to have the flow numbers good from the .300 to .400 lift on up. Bottom line, You dont want a head that just flows good numbers at .500 and .600 lift unless its a dragster.
#50
TECH Resident
iTrader: (7)
Join Date: Sep 2006
Location: Flint, MI
Posts: 846
Likes: 0
Received 0 Likes
on
0 Posts
![](https://ls1tech.com/forums/images/ranks/ls1tech10year.png)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Looking up at the 5.3 TEA heads the 1.5 package is about $370 more but the exhaust side flow #s are substantially better. It all depends on if those #s are worth the difference.
Last edited by shiv15; 02-18-2010 at 03:15 PM.
#51
TECH Apprentice
iTrader: (1)
Join Date: Feb 2009
Location: Puyallup
Posts: 338
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
^ Ya I understand how head flow works with power output and all that. I meant, what physical characteristics of the Patriots put them at the disadvantage? Port shape, chamber shape, what?
#53
TECH Resident
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
So basicaly to end the dispute, we would need to know the dollar amount that the op has to spend on heads. Based on price and budget these would be my choices.
$2000 budget:
-TEA stage 2 ls6'
-TEA TFS 220's
-PRC stage 3 Ls6's
$1500 budget:
-PRC stage 2.5 ls6
$1400 and under:
-PRC stage 1 ls6
-any 5.3s you can get.
The reason i rate 5.3s so low is because many people(local/ls1.tech) have complained that they are not satisfied with the numbers they have put down with them. And race after race that i have witnessed or run in have seen 5.3s in 2nd place.AKA first looser. Myself personaly i would rather go "donkey dick" cam and 241s then go mid size cam and 5.3s but thats just me..
$2000 budget:
-TEA stage 2 ls6'
-TEA TFS 220's
-PRC stage 3 Ls6's
$1500 budget:
-PRC stage 2.5 ls6
$1400 and under:
-PRC stage 1 ls6
-any 5.3s you can get.
The reason i rate 5.3s so low is because many people(local/ls1.tech) have complained that they are not satisfied with the numbers they have put down with them. And race after race that i have witnessed or run in have seen 5.3s in 2nd place.AKA first looser. Myself personaly i would rather go "donkey dick" cam and 241s then go mid size cam and 5.3s but thats just me..
![Chug! Chug! Chug!](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_chug.gif)
#54
TECH Regular
Join Date: Jan 2008
Location: Bellaire, TX
Posts: 458
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
GMHT builds an LS1 with the TSP LS6 stage 1 heads....
http://www.gmhightechperformance.com...ech/index.html
http://www.gmhightechperformance.com...ech/index.html
#55
TECH Regular
Join Date: Jan 2008
Location: Bellaire, TX
Posts: 458
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
LS1 with TSP LS6 stage 1 heads, MS4 cam, stock intake and TB. Made 525 horse power at 6,500 with 462 lb-ft of torque at 5,200. Not to bad.
And then with a FAST 90/90 made 544 horse power at 5,600, while peak torque came out to 472.8 ft-lbs
And then with a FAST 90/90 made 544 horse power at 5,600, while peak torque came out to 472.8 ft-lbs
#56
TECH Regular
iTrader: (6)
Join Date: Oct 2009
Location: Norton, Ohio
Posts: 429
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Remember too that all these different heads are tested on different flow-benches that yield different results. This is why I took flow numbers with a grain of salt and looked more for dyno charts and customer satisfaction when making my choice.
#57
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
462rwhp sounds about right for that combo