View Poll Results: what heads are you using
ETP
31
8.22%
AFR
72
19.10%
TEA
10
2.65%
DART
14
3.71%
Edelbrock
6
1.59%
TSP/PRC
11
2.92%
Stock 6.0
71
18.83%
Patriot Performance
38
10.08%
Stock 5.7
42
11.14%
Trickflow
10
2.65%
GTP
3
0.80%
Ported stock (by someone other than listed)
31
8.22%
OTHER (please list in post)
23
6.10%
AllPro
15
3.98%
Voters: 377. You may not vote on this poll
what heads are you using for your boosted application
stock for now....My friend is hand porting stock 6.0L heads but as of right now no tune/numbers/or track times...will update as i finish stuff...should be tuning 2morrow (5psi custom rear mount....stock motor, & a couple bolt ons) wish me luck 
8 lbs-484 rear wheel with stock heads 11.0 @ 124 full weight on 17" drag radials
12 lbs-526 rear wheel stock heads with crane dual valve springs no new time yet
gettin retuned this weekend then we hit da track again.
debating on afr's or cheaping out with patriot 6.0 heads.
12 lbs-526 rear wheel stock heads with crane dual valve springs no new time yet
gettin retuned this weekend then we hit da track again.
debating on afr's or cheaping out with patriot 6.0 heads.
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Originally Posted by Got Me SOM
8 lbs-484 rear wheel with stock heads 11.0 @ 124 full weight on 17" drag radials
12 lbs-526 rear wheel stock heads with crane dual valve springs no new time yet
gettin retuned this weekend then we hit da track again.
debating on afr's or cheaping out with patriot 6.0 heads.
12 lbs-526 rear wheel stock heads with crane dual valve springs no new time yet
gettin retuned this weekend then we hit da track again.
debating on afr's or cheaping out with patriot 6.0 heads.
Unported 243's. It ran 11.01@130 at 5psi and 12* timing. About 525rwhp. At 6psi and 14.5* it put down 550/500. At 10psi 14.5* and below 10.0:1afr = 632/517. I am installing meth and am going to pulley down to run around 8psi. Should be around 600/550. I will get some more track times after that.
Brett
Brett
stock 6.0L heads are 317's correct? How much approx CR drop are you guys seeing switching to these over stock LS1 heads? Also whats the approx hp gain by getting them ported? Real necessary to have them ported? Thanks
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Originally Posted by Superman09
stock 6.0L heads are 317's correct? How much approx CR drop are you guys seeing switching to these over stock LS1 heads? Also whats the approx hp gain by getting them ported? Real necessary to have them ported? Thanks
Heads should go hand-in-hand with the intake - are people using the LS6 intake or the LSX/LS2 intake? How is the upper (6500+) rpm performance? If there is a gain w/and LSX-90 - is it really worth the extra price?
Also- what intake port sizing is adviseable? Supposing a stock 346- would a 205cc runner work better in an FI app than a 225? If so, where in the rpm range would it work better, and why?
Thanks
Ben
Also- what intake port sizing is adviseable? Supposing a stock 346- would a 205cc runner work better in an FI app than a 225? If so, where in the rpm range would it work better, and why?
Thanks
Ben
I run a GMPP Single Plane converted to EFI with an Elbow and a 90mm throttle body installed. I mildly ported it to clean up the casting flash (which is a major undertaking because it needs a lot of work). I still left myself plenty of room to grow, but in order to do a proper job of porting you need to cut the intake manifold in half, port it and then weld it back together. That will be for the next go-around I am sure, it should breathe plenty well as is.