Thimble

iTrader: (2)

I'm not understanding how the AFR's have that much more p/v clearance than stock heads? They use the stock valve angle, and larger valves, don't they?

To achieve a 59cc chamber, wouldn't they have to be milled quite a bit? .030" or so, right?

I don't understand where this additional clearance is coming from.

Would those 59cc AFR's work with my G5X4 and still not need flycutting? I can't believe it. (although I still think I'm opting for the Trickflows).

Louis

iTrader: (7)

Im sure Tony Mamo could answer these questions for us, but they do have more clearance.

The X4 and AFRs would clear, but like I said before, if you dont believe it, just check it to be safe. It takes 5 minutes and one intake spring off to find out if you are OK. No need to clay, just measure the amount the valve drops before it hits the piston at TDC. After doing all the measuring the hard way a few times, I have the number you need to be at with drop if you will clear or not clear.

Trick Flows are again a new head I have yet to get my hands on so I cannot vouch for their clearances

99blancoSS

iTrader: (115)

Instead of staring a new thread I'll ask my questions in here if its ok. I'm having a 347 sb built by LME. Currently I run a tr224 with prc stage 2.5 (5.3ltr heads). The new pistons are flat tops with -2cc valve reliefs. I have stainless works headers 2.5" catted Y into slp 3"d/d. Where would the powerband check in on the x3? I can rev higher with my new build. I'm told 7100 rpms without issue but I dont want to wait until 4krpms for it to kick either. Its a street car that goes to the track occasionaly. I like my current powerband, before engine got sick, and dont want to lose the low end and mid range torque and hp that I have. Any dyno graphs I can see with a similar combo or your thoughts on this would be very appreciated Lou

Louis

iTrader: (7)

The valve reliefs will be more than adequate for any of our cams. IIRC, the depth of the valve pockets is somewhere in the 80-125 thou deep which is more than ample with stock castings milled. If you chose the X3 112, power would be great, especially mid range. It isnt going to have the low end of the TR224 by nature, but certianly not a lightswitch cam

nexvctm2001ss

iTrader: (8)

G5X3 on a 112lsa with stock 241 heads here no fly cutting....so LG gets my vote

99blancoSS

iTrader: (115)

Any lead time on ordering or are there plenty 112 lsa's in stock?

nexvctm2001ss

iTrader: (8)

Should be good on getting that cam whenever man.

spazzyfry123

iTrader: (4)

Hmm...How about a G5X3 on a 110? I think getting some heads will be not so good for me considering I'm getting into college here soon. I'm still not too great with cams, so it's better to ask. Will a lower LSA allow the car to get more mid range power? Or is it the opposite way? I really want a hard thumping car, and a lower LSA will allow me to achieve that. And if it is true that you can reach your powerband sooner with a lower LSA cam, then that'd be perfect! Any help will be great!

spazzyfry123

iTrader: (4)

Almost forgot...Can a G5X3 on 110 even fit under factory heads (no Piston to Valve clearance issues)? Or would I just be better off getting a 112?

Thimble

iTrader: (2)

That was discussed on page 1 and 2 of this thread, and Louis said (in post 23 ) that it would not clear.

spazzyfry123

iTrader: (4)

Ah my bad. I have read this thread about 3 times all the way through and I still managed to miss that somehow. Thanks man!

HaulinHawk

X3 here also, stock heads no flycutting . This is a BADASS cam guys ,track times in sig with pretty much a full weight car.

99blancoSS

iTrader: (115)

I've got an overweight car and 373's. Should I be concerned about running this cam?

LS69TA

iTrader: (30)

I wish I'd known that the X3 on a 112 would have worked, I sold mine before installing it in the '69 last year b/c I read that it would require flycutting and put in a FM-15.

stupid10bolt

Not to hijack but whats the benefit of 114 LSA opposed to 112 on the x3 cam? I know the 112 has more midrange; does the 114 have more top end? why would you want one over the other

waterbug1999

iTrader: (3)

Now I am confused... I had to flycutt and was told (By you and Bobby) my X3 114 would not clear with my Dart 205's milled 59cc and my .040" cometics. The valve sizes are exactly the same as the AFR 205's..

So, I cut my pistons for nothing and lost compression?

Louis

iTrader: (7)

Valve sizes mean nothing with an aftermarket casting. The 205s have the same valve size as the Absolute Speed 2.5 heads, same cumbustion chamber sizes, only there is a 50 thou difference in valve drop.

Like I said earlier, Im not sure of PTV with other aftermarket castings (previous post 26 ) If the dart is anything similar to the Patriots, early TEA stock castings, AS, ect, it will not clear.

In essence, you didnt fly cut for nothing

Louis

Louis

iTrader: (7)

99 blanco- I have cams on the shelf the majority of the time. If not, its typically less than a week wait before they ship. And when you say heavy, how heavy is heavy?

X3 112 vs X3 114- The 112 will have more midrange punch than the 114. About 8-12 more in the area under the curve. The 114 is more docile, typically the cam we run in the vettes as they are lighter and idle quality is better. I had the 114 in my White Z before I sold it and it drove like a champ with a good tune.

Louis

99blancoSS

iTrader: (115)

Well its full weight + an aftermarket audio system + all the sound deadening I did + I'm not small and I usually race with 3/4 to a full tank. I'd definately be going with the 112 lsa. I'm going to order in a week or two my LME short block isnt supposed to finished for 3-4 weeks. I've heard a lot of good and nothing bad so I''m feeling good with it. I just hope I can get it all together and hit the track before the track closes for the season.

lilbuddy1587

iTrader: (1)

You wont be disapointed, I went 12.1 @ 117.55 with a 1.9 '60 on the stock 10 bolt(BFG DR's) in hot as **** Arizona. Only mods at the time was my QTP's, true duals, a lid, X3 112 and a tune. The cam has SERIOUS mid-range pull.