TSP 5.3 cc's? 228R or torquer V2?
04-16-2007, 08:41 AM
#1
Teching In
Thread Starter
Join Date: Mar 2007
Location: West Australia
Posts: 41
Likes: 0
Received 0 Likes
on
0 Posts
TSP 5.3 cc's? 228R or torquer V2? Just wondering what the combustion chamber volume is on some stage 2.5 5.3 TSP heads. I have seen claims from 59cc through to 66 cc. Not much is really known about the 5.3s in Australia and id like to do my homework before I ship the stuff over here. I'd like a DCR somewhere 8.5.
Id like to run these as a daily driver M6, tri Ys, dual 2.5", LS6 manifold , P+P T/B, with either a 228R or torquer V2 on a custom mafless tune.
Which would be the better choice? Not so much after a huge HP figure (400ish) more after a fat torque curve. Which head gaskets should i use? The GM factory ones or cometic .040" ? I dont want PTV clearance to become an issue as i dont want to fly cut the pistons.
Much Thanks.
Id like to run these as a daily driver M6, tri Ys, dual 2.5", LS6 manifold , P+P T/B, with either a 228R or torquer V2 on a custom mafless tune.
Which would be the better choice? Not so much after a huge HP figure (400ish) more after a fat torque curve. Which head gaskets should i use? The GM factory ones or cometic .040" ? I dont want PTV clearance to become an issue as i dont want to fly cut the pistons.
Much Thanks.
04-16-2007, 08:55 AM
#3
Search for posts that I have started, which are trying to answer the exact questions you are asking. I have done alot of the DCR calculations between these very two camshafts. Also to calculate your compression use this SCR/DCR calculator
The 5.3's are 63cc, the LS6 tage 1's are 64cc.
If torque is what your after, then get the 228R w/ .040 gasket and the 5.3's with 2.02 valves and you should have no problems with PTVC. This setup should net about 430rwhp and a little over 400rwtq, with a nice flat torque curve.
Joseph said that the Torquer 2 (112LSA) should work with a .040 gasket with the 2.02 valves, but the vlaves could be sunken a bit to be very sure.
I am now thinking about possibly going with the LS6 stage 1's with a .040 gasket, since this should work fine with plenty of PTVC and possibly having them milled to 63cc, since the smaller valve should still allow adequate PTVC.
I think I will just setup some time that I can talk to Jason about the different setups and which one will work the best for my situation.
Good Luck.
The 5.3's are 63cc, the LS6 tage 1's are 64cc.
If torque is what your after, then get the 228R w/ .040 gasket and the 5.3's with 2.02 valves and you should have no problems with PTVC. This setup should net about 430rwhp and a little over 400rwtq, with a nice flat torque curve.
Joseph said that the Torquer 2 (112LSA) should work with a .040 gasket with the 2.02 valves, but the vlaves could be sunken a bit to be very sure.
I am now thinking about possibly going with the LS6 stage 1's with a .040 gasket, since this should work fine with plenty of PTVC and possibly having them milled to 63cc, since the smaller valve should still allow adequate PTVC.
I think I will just setup some time that I can talk to Jason about the different setups and which one will work the best for my situation.
Good Luck.
04-16-2007, 09:25 AM
#4
Teching In
Thread Starter
Join Date: Mar 2007
Location: West Australia
Posts: 41
Likes: 0
Received 0 Likes
on
0 Posts
Using the SCR/DCR calculator with the 228R on 112 LSA (108 ICL) I come up with a SCR of 10.85 and a DCR of 8.51 with the V2 I get the same SCR but a DCR of 8.37 using 63cc chamber and standard 0.052" head gasket for both. Does this sound about right? Hopefully by using the standard headgasket I wont have to worry about PTV clearance.
Last edited by R32WA; 04-16-2007 at 09:38 AM.
04-16-2007, 10:37 AM
#5
TECH Senior Member
Originally Posted by R32WA
Using the SCR/DCR calculator with the 228R on 112 LSA (108 ICL) I come up with a SCR of 10.85 and a DCR of 8.51 with the V2 I get the same SCR but a DCR of 8.37 using 63cc chamber and standard 0.052" head gasket for both. Does this sound about right? Hopefully by using the standard headgasket I wont have to worry about PTV clearance.
You can get the heads on stage 1.5 (with 2.02 valves), .045 gaskets and you're home free.
