View Poll Results: PRC 5.3 stg 2.5 VS PRC LS6 w/.040 cometics?
PRC 5.3 stage 2.5 w/ GM head gaskets
26
55.32%
PRC LS6's w/ .040 cometics
15
31.91%
Other, specify in post.
6
12.77%
Voters: 47. You may not vote on this poll
PRC 5.3 stg2.5 VS PRC LS6 w/.040 cometics???
#1
PRC 5.3 stg2.5 VS PRC LS6 w/.040 cometics???
I'm really struggling about what to get. I have been researching a lot and have asked some questions that aren't really being answered!
I want to be pretty streetable and have more useable power/tq. I'd really like to make over 430 HP/400 TQ.
Here's the setup:
Stock 346 ci
TSP's 228 R cam 112 LSA
Vengeance ported FAST 90
Headers/True duals
All other supporting mods
Now should I get PRC 5.3 stg 2.5 heads with stock GM head gaskets or PRC LS6's with .040 cometics.
Which one is more suited to my needs? If other, specify.
I want to be pretty streetable and have more useable power/tq. I'd really like to make over 430 HP/400 TQ.
Here's the setup:
Stock 346 ci
TSP's 228 R cam 112 LSA
Vengeance ported FAST 90
Headers/True duals
All other supporting mods
Now should I get PRC 5.3 stg 2.5 heads with stock GM head gaskets or PRC LS6's with .040 cometics.
Which one is more suited to my needs? If other, specify.
#2
TECH Fanatic
iTrader: (17)
Join Date: Nov 2001
Location: SPRING, TX
Posts: 1,387
Likes: 0
Received 0 Likes
on
0 Posts
I think the 5.3l with .040 gaskets is the way to go for what you want to do. Also, you can call Texas Speed, Jon was more than willing to help me out and talk to me about my setup
#3
On The Tree
iTrader: (1)
Join Date: Apr 2007
Location: DFW
Posts: 145
Likes: 0
Received 0 Likes
on
0 Posts
Not sure why I think this way but I love compression and I would go with the 5.3 heads with thinner gaskets myself. Thats just how I feel about it. Maybe because I think that it would produce more HP and TQ as far as under the curve is concerned. I could be wrong though.
#6
TECH Enthusiast
iTrader: (77)
Join Date: Feb 2004
Location: 2 Miles from the Brder Wall, Tx
Posts: 718
Received 0 Likes
on
0 Posts
I had the TSP LS6's and now have the 5.3's. I felt more power out of 5.3's and wont go back to the LS6's. Although I had to used stock multi-layer gaskets inorder to keep my MS3 cam
Trending Topics
#11
TECH Senior Member
iTrader: (8)
also depends on your future build plans, running boost applications i would go with the ls6s, less compression good flow numbers....
the 5.3s are going to have a higher compression ratio which makes good power but it is ill advised to run them with a moderate or higher boost application
the 5.3s are going to have a higher compression ratio which makes good power but it is ill advised to run them with a moderate or higher boost application
#13
TECH Fanatic
I have the early 5.3 heads, wish i had gone with PRC or Higgins (AUS)
Check what chamber size the heads have,as mine are 67.5cc (way to big) and if they port matched to your inlet manifold now have less compression than Standed, waste of $$$$$$$.
You get what you pay for i guess.
Check what chamber size the heads have,as mine are 67.5cc (way to big) and if they port matched to your inlet manifold now have less compression than Standed, waste of $$$$$$$.
You get what you pay for i guess.
#19
12 Second Club
iTrader: (4)
Join Date: Oct 2006
Location: Chesapeake, VA
Posts: 300
Likes: 0
Received 0 Likes
on
0 Posts
I'm really struggling about what to get. I have been researching a lot and have asked some questions that aren't really being answered!
I want to be pretty streetable and have more useable power/tq. I'd really like to make over 430 HP/400 TQ.
Here's the setup:
Stock 346 ci
TSP's 228 R cam 112 LSA
Vengeance ported FAST 90
Headers/True duals
All other supporting mods
Now should I get PRC 5.3 stg 2.5 heads with stock GM head gaskets or PRC LS6's with .040 cometics.
Which one is more suited to my needs? If other, specify.
I want to be pretty streetable and have more useable power/tq. I'd really like to make over 430 HP/400 TQ.
Here's the setup:
Stock 346 ci
TSP's 228 R cam 112 LSA
Vengeance ported FAST 90
Headers/True duals
All other supporting mods
Now should I get PRC 5.3 stg 2.5 heads with stock GM head gaskets or PRC LS6's with .040 cometics.
Which one is more suited to my needs? If other, specify.
If you stick with that cam you could get those power numbers with STOCK 243 castings w/ .040 cometic head gasket, and an LS6 intake. Seeing that you already have a ported 90/90 intake you shouldn't have any problems. Don't waste your money on true duals, a full cat-back works just as well and doesn't cost you torque.