F8L_LS1

iTrader: (5)

hi all,

im interested in buying a set of heads for my 99 camaro ls1 m6 in the near future. my exhaust system is shitty at the moment but once heads go on ill fix it with a whole new system.

current mods are:
218/224 .555/.556 115+4 cam
Pac valve springs .600 lift
Hardened Pushrods 7.400
shorty Headers, stock y pipe w/ cats, gmmg
SLP Intake Lid
K&N Filter
LS6 intake manifold
Ported/Polished Throttle Body

im mainly looking for an all around set of heads. AFR 205's w/ 66 cc comb. chambers would be nice but im not an expert on heads so thats why im asking.

99blancoSS

iTrader: (115)

Any good ported head will work with that cam. AFR's would be a good choice if the budget supported it, or TFS or ET's or any premum head really. Then you have cnc'ed OEM heads. Some times almost as good as a premium head but usually for a lot less money.

I would set a budget and then shop from there. Doesnt hurt to look for used premium heads in the for sale section either.

WS6RED2002TA

I was looking at at a cam close to that 218/224 114. I was looking a getting my stock 241 head ported. I am going for a good stealth setup.

F8L_LS1

iTrader: (5)

Exactly, you can barely hear it and it is very stealthy.

99blanco, thanks for the info. as you stated, it does come down to how much i want to spend.

Iv been thinking about these choices:
AFR 205's 66cc comb chambers
TrickFlows 215's 64 cc chambers (have to run roller rockers with these )
PRC LS6 Stage 1 or maybe 2.5 CNC Ported Heads - not sure

when it comes down to it... i think the trickflows would be the best in overall hp (giving me a tad more compression and being able to swap in a massive cam later) but i think they would hurt my low end torque a little. the afr's would be an easy swap and would give me a lot more low end. the PRC's i have no clue about and am not sure how big the runners are.

ABQ99TA

iTrader: (17)

I could be wrong but with the cam you picked i would think you could send your stock heads to TSP get a P&P and maybe a valve job for 5-6 hundred and be smooth sailing.

99blancoSS

iTrader: (115)

Honestly the AFR's are the best choice on the short list. Not to say there is anything wrong with the others but you will need to spend more money for rockers with the TFS if you go with them They are great head as well and rival the AFR's from all we've seen so the choice is about money. ( I sell both the TFS and the AFR btw as well as ported LS6 heads). Just the AFR is a great head still and at the price its ready to drop in and use your current rockers. Its superior in design to an oem head, and I'm not knocking ported OEM heads either. AFR has earned their reputation, and again not to say TFS hasn't or ET for that matter. Both are great products as well.


The AFR's will be great low and mid and good top end. This is where most of the driving is done unless this is a dedicated drag car.
1100-4000 rpms is where most people live in a street car with an occasional redline. So really this is where you want the most improvement I would think.

F8L_LS1

iTrader: (5)

99blanco,

thanks for the info. for the past couple hours i have been pulling up dozens of articles from here and other sources. from what i've come up with, im set on the AFR 205's with the 66cc chambers because of their ease of install, outstanding power gains throughout the power band and craftsmanship. now i just have to save up some cash.

pretty much my next plan of action is to get the AFRs with some AR Headers for a great combo.

99blancoSS

iTrader: (115)

Save some big bucks!!! AR's are not cheap and the AFR;'s are like $2200 add $100 for the double springs..... Good choices though, you wont be disappointed with your money spent.

BlackNiteWS6

iTrader: (2)

I think the AFR's a great choice no doubt...but also look into the TSP/PRC Terminator
heads as well. They start out as "as cast" Edelbrock heads then PRC does their magic
on them. On TSP's site you can compare that AFR's and the Terminators. They flow about the same, just that the Terms. have a 200cc intake runner which will have killer
low end and they flow over 300cfm @ .600 lift so they'll go top end as well. Plus they are $1,795 with dual springs. Either choice you cant go wrong and AFR is a bit more try and trued. But just cause the Terms. aren't as wildly used doesn't mean they don't make awesome power.
Do alittle search on those. Hope i could be help. I'm really thinking
about getting the Terms. then next year when i have more money i'm gonna go FI...good luck.

N4cer

iTrader: (11)

Actually that's exactly why you hear nothing about Terminator heads. I believe that 99blancoSS has experience with these heads. Not that they suck. Just that they're nowhere near the hype or price. I think he gave great advice about finding used AFR's in the "For Sale" section. Best bang for the buck, and almost 100% repeatable gains.

PREDATOR-Z

I agree on AFR but in stock casting ported, I would look at Stage 2 Livernois 243s.
Great heads with small intake runner for great velocity and all the benefits of the 243 casting. A bit of mill or better yet a .040 gasket and that is a nice stealthy optimized combo

F8L_LS1

iTrader: (5)

thanks for resurrecting my thread guys. about a week and a half ago i picked up some used AFR 205's that had been milled to 62cc's. Im happy with them and now im just doing the long hunting and gathering for more parts before i do the head+headers swap.

what i plan to put on:
AFR heads milled .030
AR Headers 1 3/4 primaries with catted Y (gotta love cali + catted sounds better with gmmg)
cometic head gaskets .040
chromoly pushrods 7.350 (my calculations with the heads... is that correct?)
possibly down the road get some 1.8 roller rockers.
ls7 lifters
ASP UDP

what do you guys think?

PREDATOR-Z

check your pushrod length
swap lifters right away, you'll need injectors (SVO 30) and a tune ASAP after install.
As a matter of fact, I would tune (Base) before install and go back for fine tune after.

F8L_LS1

iTrader: (5)

thanks predator.
ill add some svo injectors to my list.
anyone think that the 7.350 pushrods sound right? ill have to get a pushrod length checker to be sure.

N4cer

iTrader: (11)

Yup. They were on my 408 and made the same power and track times as a buddy's L92/L76 combo 408.

BigBronco

iTrader: (2)

Definitely not a bad option here.

The AFR is not a bad deal, especially with the metal left to work with later on if you wanted just a bit more power on the top end of the flow side on this head.

Any good Low 3XX cfm cylinder head in the low 200CC runner area will result with some decent power. (Very broad/blanketed statement) but there are so many cylinder head options that land in this area.

Good luck with the build.

BlackNiteWS6

iTrader: (2)

Congrats on getting the AFR's

BlackNiteWS6

iTrader: (2)

Other than having your stock heads ported there aren't too many
heads between 200cc-205cc's out there. Most heads that flow around
300cfm are 210cc all the way to 225cc or even higher. A small runner with
high flow gives you any choice cam you wanna run since the small runner
will take care of your low end power but the head can still top end very well.

F8L_LS1

iTrader: (5)

i had a quick question on PTVC. i will do the clay method to be sure when the time comes but i was thinking about picking up some 1.8 roller rockers and was wondering if anyone knows how close ill get.

setup will be:
cometic .040, afr 205 milled to 62cc = should be 11:1 compression. 7.350 pushrods.

pretty much with my cam now the 1.8 RR will incease lift to 588int/589ex (im not sure how much it will increase my duration by...) im pretty positive i will be fine with PTVC but it never hurts to get a second opinion ????

also, will the 1.8 RR change the needed height of my pushrods???

thanks
-f8l

99blancoSS

iTrader: (115)

I'm having a sale on AFRs this weekend, call for pricing.