dannyz

They should compliment my rather mild street combo. I decided to stick with my Hotcam and get a good set of heads rather then cheaper heads and swapping in a larger cam. I am wondering though if I should change the current springs that come with the heads and put in some LS6 springs. My reasoning is the AFR springs are good for .600 lift vs the .550 lift for the LS6 springs. The unneeded additional spring strength might cost me a few ponies over the LS6 springs?
Anyway's, am looking forward to getting these things installed/tuned and out to the strip this spring!

LSlui

Would the .600 lift springs really hurt you ? And why ?

garygnu

maybe E-mail Tony Mamo at AFR and see what cam works best with those heads .you mite be leaving a lot of power on the table .

99 2500

Leave the springs on, the AFR valves are heavier than the stock valves that LS6 springs were design to work with.

99Bluz28

iTrader: (35)

I'd stick with the dual springs, and consider going at least with one of the older CompCam shelf grinds that use the Xtreme RPM (high lift) cam lobes. They'll offer long valve train life, and increased power(over the hotcam). Further more the AFR heads will work better with less split and higher lift.
http://www.ws6project.com/user_stor/...-lift-222-224/
http://www.ws6project.com/user_stor/...-lift-228-230/

JakeFusion

iTrader: (7)

I'd change out the HotCam as well. You aren't gaining much there. Talk to Tony Mamo. Something like a Comp LSL/LXL Lobe 223/226 113+1 would be good and very streetable in combination with the 210s. In fact, since those lobes are much faster off the seat, it would actually drive and idle better than the Hot Cam while making another 20-25HP over the HotCam...

But if you really wanted to keep the Hot Cam and were keen upon changing valve springs, I'd run aftermarket beehives due to the extra weight of the larger stainless steel valves. The PAC 1218 springs or the nitrided version, 1518s would probably work.

Also, I'm surprised you didn't talk to Tony in the first place. I'm sure he would have steered you to the 215s since they give up no velocity to the 210s (same cross-sectional area) but outflow them by a solid 7-10cfm across the board. They are a superior head for roughly the same prce.

dannyz

Thanks. That's the kind of info I was looking for.

dannyz

I am happy with the Hotcam. Thanks for the input though.

mchicia1

iTrader: (5)

You're over thinking it.

Stick with the most reliable spring you can afford that controls the valve the best.

There are more milder cams out there that will make more power than the hot cam.

dannyz

Hotcam makes good power. Excellent dd cam. No hesitation on startup, no stumbling pulling away from a stop on light throttle, run's a 12.05 qtr with 6 degree's timing pulled [ I have nitrous ]and get's 25mpg. While I am sure I will continue to hear about better cam's, this one suit's me just fine.

dannyz

Over thinking what?

JakeFusion

iTrader: (7)

Changing the valvesprings. You're chasing HP there. The stock 8017 springs on AFR heads are like 130lbs seat. The Beehives I listed are also 130lbs seat. They have better harmonics than a dual, but you're just pissing money away if you're looking for more power through valvesprings.

More power is in a different cam.

When I talked to Tony last year, I was looking at the AFR 215s and a Comp LSL/LSL 227/231 114+1 camshaft. With a FAST manifold and a decent exhaust (with cats mind you), that's a 470/420 combo in an M6 with 30+mpg and near stock manners. And it would be good for 10s in a full weight car.

The Hot Cam is not optimized for those heads. It may be fine with stock heads for what you want, but with the AFRs, you might want to reconsider that cam.

dhctss

iTrader: (3)

If your keeping the hotcam you were better off throwing stock ls6 heads. What everyone is trying to say is your wasting the potential of that head with a better cam. Why spend over 2k on one of the best heads for subpar hp gains.

dannyz

Really? in case you missed it I am running nitrous. So why am I even bothering with heads at all when for $12.00 worth of jets, I can add another 50rwhp. I am just looking for a fun dd that from time to time I take to the track. Btw, numerous people, mostly vette guy's, have kept the stock cam while switching to aftermarket heads. Runs/drives/sounds exactly the same as when stock, but are seeing pretty good gains from the heads by themselves. Do a search. It's not at all unusual to see 40rwhp from afr heads on the STOCK cam. So the subpar hotcam stay's.

vettenuts

iTrader: (4)

Make sure you check your rocker geometry to avoid premature guide wear since the AFR's use bronze guides.

dhctss

iTrader: (3)

Do a search really. No need to be rude bro . I have seen very few people getting 50 rwhp with heads and stock cam. Just trying to help

99Bluz28

iTrader: (35)

dannyz , so what size chamber did you order the AFR210 heads with, the standard 66cc, or something smaller for a little bump in SCR?

Anyway regardless I'm sure you'll still enjoy having then AFR heads on you engine with you Hotcam.

A.R. Shale Targa

iTrader: (2)

GREAT; now your rear tires will be hating you.....

JustAFooL

iTrader: (45)

Sounds like a killer combo..

Any links to these 50rwhp gains on stock cam a head swap?

SSCamaro99_3

iTrader: (1)

Would like to see numbers. Have always wondered how a Hotcam would do with aftermarket heads. Becasue I have one, and you almost never see it.