BriancWS6 what is the lift and LSA on your cam? Do you have the heads milled at all? What gaskets are you using?

I really say go cam only now and save up for some nice heads. If you really want to make great power with a smaller cam, then you want to go all out with the heads.

 

So it sounds like even getting above 400rwhp/tq the tranny and 10-bolt should be ok? The guy that runs 11.9s in my club has an a4 and has been through like 3 10 bolts now . I would like to avoid that. lol

What tweaking would you suggest for the cam? I have been thinking seriously about a TR 224 or 228 (or 224R or 228R if there is any difference, but I think they're the same, right?).

To "go all out" on heads would mean what? What are the best without getting rediculous in price? Are there any that are a lot better than the AFR 205s?

Oh, and thanks for all the helps guys. I appreciate it

 

My cam advice would be the one i suggested earlier, comp xer lobes, 228/232 110 lsa. If you do go with this cam i'd send a PM to Patrick G and ask him how much (if any) advance to have ground into the cam. There's a graph of this cam in the dyno section with the TPRC Terminator heads. The car mad something like 380 rwtq @3000 rpm through an LS6 intake.

Here's the graph from WeathermanShawn's sig:
http://img83.imageshack.us/my.php?im...vedatantd2.png

 

How bad would a mild heads/cam hurt your gas mileage something like a 224 cam and stage 2 5.3 heads?

 

Wow, thats a really nice curve... I would love something like that... 400ft/lbs at right about where my 3600 stall would put it immediately. How would the idle be for that car? Or maybe how would the curve be effected by a 112 LSA? It's just that I would like to keep the car very driveable too, so a really nasty idle would be bad.

 

I have a TR 224 and Patriot heads and get 24.x mpg on the highway and a lot worse in town but I think that is because it is hard to ease onto the gas... I am going to an AFR set up with a custom cam though. If you send patrick g $25 he will give you a custom cam spec.

 

hello, just my 2 cents. i went to small on my cam, stock LS6 550 lift , 204/218 dur, 117lsa. no lope sound and you cant even tell i have a cam . if your looking for almost stock drivability my next choice was a lunati cam about 559 lift 221 dur, 115 lsa. i was just afraid of losing the stock drivability. heads i'm very happy with my tsp (texas speed) cast #243 ls6 budget stage 1 heads. about $900. and they flow i think 307 cfm at .600 lift intake. about 215 cfm exhaust. great for street on a budget. complete with ls6 springs you may want to upgrade if any possible big cam plans for the future. again i'm not a racer, just enjoy cruising with muscle!

 

No offense but what do your heads flow at .550 lift because your cam can't use the flow at .600?
You can't focus on peak flow numbers if your cam is not going to utilize it. Look at the flow #s under .600. I have read some books about heads and flow #s and some heads flow way better at a certain peak lift than you would think if you only looked at the #s under that say .550/.500/.400 etc. Just my $0.02

I'm not picking on you...I made the same mistake looking at peak flow and having a cam that gets no where near that number.

 

hello , my point was only that the heads had good flow #s for the price. no one recommended that cam as a match for those heads. not TSP, not my mechanic, i alone chose that small cam and i try to tell people not to make the same mistake. now also in my old GTO i over cammed it for the street which was also a mistake. EOM.

 

Supporting bolt ons: longtubes, free flowing exhaust after that, lid, underdrive crank pulley, ported TB. No, I dont have a FAST 90 setup. I just ported my own stock TB and am utilizing the stock LS6 intake.

If you dont go with what you truely want to, then after the "new" wears off, you'll wish you had done differently. Thats the reason I went with the AFRs, I knew if I didnt, when I wanted more power, I would kick myself in the *** for not getting them in the first place.

The specs are 228/230 .588/.591 on a 114+1. The heads are milled .024 to 62cc and I run Cometic .040 headgaskets. Static CR is 11.34-1, and pump gas 93 is all I run with no issues what-so-ever.

The two best heads out IMHO are the AFRs and the TFS. As far as tweaking goes, just be careful on p-v clearance if you veer very far from my specs and mill the heads with the thinner gasket. BTW, the extra compression coupled with the tight quench the .040s provide, is part of the "attention to detail", that gets the numbers

I am still knocking out great mileage. The worst I have gotten the last three fillups has been 19.7, the best was 23. None of these were all highway. On a pure highway run, the car will still get 25+

 

BriancWS6 sounds like you got a sweet set up sounds like alot better deal than the nitrous route i was about to go. Wish i had the money for the AFR's, Also how many rpms do yo run Brian and what powerband does you cam have Rpm-Rpm???

 

The setup peaks at 6400, and I have my shift-lite set to 6700. Power comes on early. There is no loss of low-end what-so-ever. I really dont know how the cam manufacturers come up with their "rpm range" that they post, so I'm not gonna try to

 

Also when you said you get 19+ is that with your 4:10?

 

Yep, and that was with beating on it pretty much the entire tank. Going through every gear shifting at 3k, sometimes higher, taking a buddy on a ride out by the river to 148mph. Lots of triple digit runs by myself. Just having fun.

 

BriancWS6 I just want to let you know that I am very jealous of your setup.

 

Speedmonster185..

I like your idea of a sleeper.

I'm the one running the PRC (TSP) Terminator heads. Smaller runners, but with 62cc, you get the additonal benifits of higher compression.

BlueSix thanks for the shout-out..Not many people go with the PRC (TSP) Terminator Heads. I like them.

That 228/232 110 cam would get you noticed though. It lopes, which I like, but not a sleeper.

I did run a Comp Cam 220/220 114 on stock heads for about six months. Great drivability. Believe it or not even it had a slight lope or burble.

I am a fan of the AFR heads. Maybe a slight mill and a cam duration of 220-224 would get you to your goal. You might have to live with a little loss in being a total sleeper..Hard to hide lope..

But you may actually like a little lope..

I'm sure some more experienced LS1 members can add some more suggestions..

Good luck..Sounds like a great plan.

 

Where were you when I was picking my first set-up??? I wish I had known then what I know now . Maybe then I would not be in the process of swapping to AFR heads and a custom cam now.

Good advice to get what you want now rather than later and pay for some things twice.

 

How much in total did your heads and cam cost you and where did you get them from?

 

Also someone said that the afr's are a direct bolt on is this true?

 

I assume you are asking me? The cam I got direct from Comp, it was 380ish IIRC. I spoke with Tony about the heads, and he found a vendor that had them in stock milled to my specs. So I got those from Rick@Synergy. I believe they were in the 2300ish range, and that was also with the upgraded springs.