LawmanSS

iTrader: (19)

I've got a set of MTI Stage 2 LS6 heads on order. I have a TR224 112 cam set to go in with the heads. I selected this cam based on Thunder Racing's recommendation. Lots of people are saying that the TR224 is not enough cam for the LS6 heads. My question is: Should I go to a bigger cam such as the X1 or is the TR224 gonna make some power? I do not want to touch the short block at this time, so P/V clearance will be an issue and fly-cutting is out of the question. Also, is anyone using either of these cams with Stage 2 LS6 heads? Numbers? Dyno charts? Suggestions? Thanks!!

Nine Ball

iTrader: (38)

The X1 is probably better matched to your upcoming MTI heads. Their LS6/X1 setup is pretty damn awesome together.

The Thunder 224 is still a great cam though, and will have slightly better drivability. Probably not giving up more than 10 rwhp between the two cams.

LS6 heads shine at higher rpm, which is why someone probably suggested to you that you need more intake duration to take advantage of that.

Tony

LawmanSS

iTrader: (19)

Thanks Nine...the 10 rwhp answer is kinda what I've been looking for. I have the TR224 in my possession. I would have to sell the 224 and buy an X1, which is a bit of a headache...but I would do it if I would see a considerable benefit over the 224. I spent a bunch on the premium LS6 heads, so I just want to do this right the first time!

JF WS6

Nineball said "probably" 10RWHP, but I've seen up to 445RWHP with the LS6 head/X1 combo. How much are your heads shaved again? .030? You probably won't clear at .030 with the X1.... you'd have to flycut the pistons. If you're shaved .015 you'd prob. be ok cause that's the setup I used to run.

LawmanSS

iTrader: (19)

According to Wayne @ MTI they're supposed to be shaved .030 He suggested the X1...said he runs it on his car. However, he never mentioned the flycutting! I definintely don't want involved with flycutting at this time!

JF WS6

Well, I know I have heard of people running the X1 with a .030 milled head, and it may *appear* to be ok.... but I'll bet if you pull the heads off after awhile you'd see some area on the pistons where the valves have made their own notches into the pistons if you get what I mean. You should ask how much clearance there is with a .030 LS6 head and the X1 on the intake side. Your supposed to have 80 thou. clearance on the intake... That's usually where the problem is not on the exhaust side. I had a set of stage II LS6 heads done up with the X1 cam and I was informed the most I could mill and be totally safe was .015, so I don't know why MTI says you'd be fine at .030. One thing you might be able to do is use a thicker head gasket to get into an acceptable clearance range.

MTI told some guy I saw on this forum awhile ago that the X1 would clear his setup but when he installed everything and turned the motor over his intake valves collided with the pistons.... not good. He should have checked rather than taking someone's word for it. If you're having this stuff installed by a shop the best bet is just to make sure they check it first, it's kind of a pain, but it's more of a pain to replace all your intake valves or some of your pistons. If you wanna do the X1, why not just order it also and then let the shop decide if you're in the clear or not with your heads. If you can't clear you could probably send it back, then just go with the TR224 like you had planned..... that's what I'd do.

LawmanSS

iTrader: (19)

Good idea about buying both...hopefully Rapid Motorsports is gonna do the install...This brings up another question...will the 7.4 pushrods I bought from MTI be okay, or would I need the shorter ones with the X1. I did email MTI earlier today. I re-asked the question about the P/V clearance with the heads milled. We'll see what they have to say.

Billiumss

iTrader: (11)

Any new info? I'd like to know.

I have a TR 224 cam and thinking of going to a X1 cam.

My heads are milled .010 so I "should" be ok.....

LawmanSS

iTrader: (19)

I haven't received any new info yet...MTI hasn't returned emails and I've been too busy at work to call. I talked to Mikey at Rapid and he told me that he would do a custom grind to compliment the LS6 heads. I requested the specs, but he's on vacation until the 21st! He also said the TR224 was a little small for the LS6 heads, but not a bad cam. He didn't comment on the X1...I'm still undecided on cam...

JoSeY

i'm running 7.350 pushrods on my X1 GTP stage 2 set up..I know my heads are milled a good 30...been running this set up for quite a while...I had the 218/224 cam in then went X1...WOW what a difference. My heads are the 02' model 241 castings though.

MTI

E-mail me directly and I'll be happy to respond quickly to any of your questions. JaysonMTI@aol.com

Jayson - MTI

SDB

iTrader: (7)

My combo is much different BUT I just installed the X1 cam and drove it for a night and like it very much. I had the B1 cam and the difference is very noticable. I wouldn't be afraid of getting a big cam because of deivability issues, My car idles and drives the same as before with a little more lope, no stalling or hunting for an idle. One thig that was odd though, teh cam specs were .591 lift, but the cam card I got with the cam from Comp Cams stated it was a .609 lift...not sure of why there was a difference.

beardWS6

iTrader: (1)

I recommend the X1 cam. Jayson and crew put my set-up together and I love it. This cam pulls really hard all the way threw and I have a A4. You can see in my Sig what all I have and we safely tuned her for spray. I still pulled dang good numbers. My timing is alittle low and I`m running rich for the spray. What I loose power wise I get it back with the 1oo wet shot. If you want my dyno sheet just PM me your E-mail and I will send it. I haven`t got to the track with my E/T`s yet, The nitto`s don`t like all the power. But I do!! My car weight is 3850lbs with me in it. I still smoke ***

Geoff

iTrader: (3)

IMHO there won't be more than about 10 RWHP difference between the 2 cams. The 224 is a great all around performer. If you want a cam from us that would be closer to the X1 look at the TR 230. The X1 and TR 230 are very close in intended application and power level.

Raughammer

I run the LS6 MTI heads and the X1 cam with 30 shaved... no fly cutting is necessary.

127 mph traps speeds and 10.6 e.t.'s in a very streetable car.

Good luck

scalemaster

iTrader: (3)

are the 241 casting heads from a 2002 ss good heads and what are the specs on them can some one tell me

Visceral

iTrader: (1)

Is that a good thing?

chris

Visceral

iTrader: (1)

Yeah.... But you are special ;-)

If I were to get those #'s out of my 388 All-bore with LS6 heads and an X1, I'd feel like tha shizznizzle fer shizzle. Masta of mah domain.

X1 will make great power, so will the TR224 or the TR230. No more than 5hp difference IMHO, so dont sweat it. If you want to feel more HP, drive earlier in the morning ;-) Cams are easy to change and someone will always buy a used TR224, X1, or TR230. Dont stress about it. Get one of these cams in and enjoy the new power.

chris

JoSeY

Yep..my GTP's and X1 trap a few mph slower but my raceweight is near 3600lbs w/me in the car plus I know my stock 102,000 mile 4L60 is slippin a lil on the top end.

LawmanSS

iTrader: (19)

Thanks all for the information. Your help, along with suggestions from Jayson @ MTI and Mikey at Rapid are making my choice easier. I think I'm going with the X1, although I'll make my final decision when I hear about Mikey's custom grind, after he returns from vacation.