Chicago Crew UnderBoss

iTrader: (1)

I am helping a new vette Ls1 enthusiast in the Chicagoland area mod his car and he already has ordered MTI Stage II LS6 heads for his 1999 A4 coupe. First off, how will the MTI stage II LS6 heads perform vs. Stage II Absoulte Speed Heads or GTP?

He wants to make the most power possible and want the best ets and traps and he will be setting car up to drag race with large stall (at least a 4000 stall) and at least a 3.73gear and maybe up to 4.10s.

He does not want to have to fly cut his pistons and has cam choice narrowed down between MTI X1 cam and the TR/224/112 cam. What combo will make more power (he's shooting for 400rwhp/trtq) and what will get him better ets everything else being equal.

Thanks for all input and intelligible feedback.

MTI 427 ROADSTER

J-Rod

If it is an all out race car, there are some cams that are bigger and meaner and will make more power, but will not require fly-cutting. Is this going to be strictly a race car, or is going to be a driver at all?

2001 LS1 SS

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by MTI 422 Z07 Roadster:
<strong>I am helping a new vette Ls1 enthusiast in the Chicagoland area mod his car and he already has ordered MTI Stage II LS6 heads for his 1999 A4 coupe. First off, how will the MTI stage II LS6 heads perform vs. Stage II Absoulte Speed Heads or GTP?

He wants to make the most power possible and want the best ets and traps and he will be setting car up to drag race with large stall (at least a 4000 stall) and at least a 3.73gear and maybe up to 4.10s.

He does not want to have to fly cut his pistons and has cam choice narrowed down between MTI X1 cam and the TR/224/112 cam. What combo will make more power (he's shooting for 400rwhp/trtq) and what will get him better ets everything else being equal.

Thanks for all input and intelligible feedback.

MTI 427 ROADSTER</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Either one of those should put him over 400 RWHP no problem, torque may be just below 400. The X1 has been making some great numbers, hoping mine will show the same when I dyno it!

-Dave

Chicago Crew UnderBoss

iTrader: (1)

J ROD:

The car will not be a daily driver but more of a weekend toy, which will see more street time than at the drags, so it needs to streetable. Neverthess, what other more aggressive cams can you recommend on for Automatic tranny, which will not crap out/stall at stop signs, put down AWESOME performance and yet still be streetable. My friend, like myself has no problem with very lumpy radical hot rod sounding idle, but car needs to be streetable as it will be driven often during the good weather on weekends, etc.

What other cams can you recommend with no fly cutting that will outperform the X1 and TR 224 and what cam would you pick between the X1 and TR 224?

THanks,

MTI 427 Roadster

Toxic Texan

He can always call MTI and talk to Jayson and get his input on what cam to use or even maybe try a new spec cam. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />

Chicago Crew UnderBoss

iTrader: (1)

COLONEL:

What would your educated guess be as to dyno numbers at the wheels (hp&tq)with the MTI stage II LS6 heads and X1 cam, going thru a C5 A4, with 3500 stall and 3.73 gears?

Any chance of that Vette hitting high 10s with Hossiers Slicks and perfect hook up.

THanks,

MTI 427 Roadster

J-Rod

That was the info I was looking for.

If it was an all out race car, you could have looked at some of the cams out there with more duration and and a looser LSA (108-109).

But, if it is a weekend warrior and you don't want tons of dyno time gettting it tuned, then an X1 would probably be a good choice.

Colonel

~415-420 RWHP with the converter locked using a cuttout. If it were an F-body and an M6 I'd say 440. With the converter unlocked take away another 10-15 RWHP if this is a Yank converter. Likely more if it's another brand.

10s could be done (would NOT be easy!) but not with that converter. Traction and weight will also have to be right.

<small>[ November 07, 2002, 01:45 PM: Message edited by: Colonel ]</small>

99 Black Bird T/A

iTrader: (4)

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by MTI 422 Z07 Roadster:
What other cams can you recommend with no fly cutting that will outperform the X1 and TR 224 and what cam would you pick between the X1 and TR 224?
</font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">LS6 heads flow better at the higher lifts over .570 than LS1 heads. Since your friend has LS6 heads he should go with the .580 + lift to take full advantage of the LS6 heads potential. Either of the cams you've listed should make excellent power. What cam does the head porter/MTI recommend?

I think the X1 has the potential to make more power than the TR-224, because X1 has more intake duration, slightly faster ramps & more lift.

FasTech has a cam called the F1 that is very similar to the X1 from what I've read.

LGMotorSports has a cam called the G5, that is worth reading up on.

TR-227/224 if your looking at the X1, I think the TR-227/224 would be more comparible to the X1 than the TR-224. Due to more lift, faster ramps, I think the X1 would have a little more potential.

Colonel

The X1 would be hard to beat. It's the biggest cam I would go with for a street driven 346ci engine.