FCar2000TA

iTrader: (7)

I am going to daily drive my car, and maybe go to the strip every now and then, so I really like the .2 to .5 lift numbers for these heads. I would really like to get a FAST 102 as well, but I don't think I will be able to afford both since I want to get roller rockers with the heads.

I also want to switch to flex fuel, mainly for the cleaner burning and higher octane rating, but 5% more HP is a bonus.

LSleeper1500

BlackNiteWS6

iTrader: (2)

The 224cc heads look more like the stage 2 version to me.

BlackNiteWS6

iTrader: (2)

Other than AFR doesn't anyone make a intake runner smaller than 215cc's?

LSleeper1500

TFS As Cast. I believe they have a 205, 210, and 215.

BlackNiteWS6

iTrader: (2)

I'm liking the Trick Flow® GenX® 215 Cylinder Heads for GM LS1. Excellent flow with a smaller runner.

LSleeper1500

BlackNiteWS6

iTrader: (2)

You have to run roller rockers with these heads? You can't used stock style rockers?
Damn that bites.

BlackNiteWS6

iTrader: (2)

I hear ya. As long as the FED stage 1's are 216cc not 224cc's. If they are 224cc's i'll have a set of 243's mildly ported and call it a day. It sucks the TFS 215's need aftermarket rockers.

LSleeper1500

George Conroy I believe mentioned he's used stock rockers with those. Not 100% but I think so. I don't see why you couldn't

FCar2000TA

iTrader: (7)

I don't the head matters, its the cam lift that matters. If your lift is over .600, then you should have roller rockers.... or that's what I have gathered from this site.

FCar2000TA

iTrader: (7)

Have any of you guys considered having the combustion chamber smoothed out (softened)? From what I have read, it eliminates hot spots in the combustion chamber, reducing pre-detonation. I intend to stay NA, so I don't know if I would get any benefit or not.

LSleeper1500

I'm thinking about it as well. Let me talk with my tuner and see what he says. I think for an average h/c setup it might make a little difference, but if not I wouldn't worry about it too much.

LSleeper1500

Seems like it's for a big nitrous shot mostly. I think I'll pass on mine for now to save some $$

FCar2000TA

iTrader: (7)

I talked to my tuner, and his input was "no NA benefit at all" for having the combustion chamber softened.

On a positive note, mini-tubs and roll over-the rear seat bars will be delivered tomorrow!

LSleeper1500

My reply never seemed to send. But why would he say that? Hell, ANY port work to a head (unless its a hack job) will net some type of gain. Impatiently waiting for my heads. Cam should be in today. As far as compression, their website says 0.010 for surfacing. Whats that put the CC? usually 0.065 per cc correct? so roughly 62ish CC?

Jimbo1367

Remember when comparing flow numbers, these numbers or from DIFFERENT machines. So it isn't a true apples to apples comparison. Just take the numbers with a grain of salt.

LSleeper1500

Of course! bore size, plate size, etc etc. I think regardless all CNC work from just about all companies are going to be within a few digits of HP. I could've went TEA which was my first choice but for a couple hundred cheaper I figured for my build I wouldn't be hurting with FED, once its all together. Any of these CNC companies are great options.

LSleeper1500

camshaft made it. Looks like FedEx slung it around pretty good and damaged the box. Lol inspection looks fine though. BTR Stage 2 LS3 cam, should be about 2 weeks for the heads. Thinking about .045 or .04 gasket. I think that will put me around 10.8-11.0 compression if my math is correct.

FCar2000TA

iTrader: (7)

I meant no benefit to chamber softening.