Dvlray6

I have an MTI built 427 motor that I am thinking of bumping up to FI. Anyone done one of these? I am leaning towards the APS TT or Maggie. Looking for any feedback out there.

Thanks!

Bushong572

I might be wrong, but I didn't think a maggie could flow enough for a built 427. We have a C5 around here that ran a maggie for years on the 350...he went to a 427 and could not get enough airflow.

0opticZ06

Go with the APS kit with that MTI built motor best power for the dollar.

Dvlray6

Have you guys done one of these yet? If so, how did it turn out? I certainly have heard great things about the APS kit on regular C6 applications.

excessive81

i don't believe the aps is gonna worl on anything much over a 402. the best beat for big cubes is procharger or vortec blowers as you can get a bigger blower for the bigger cubes

0opticZ06

We havent done any APS kits but we have herd great things about them. We do custom kits only but for bolt on at this point im thinking u will be just fine for the price.

mdhmi

What CR is the motor?

Brabus2

Forum member "Blocktrdr" has a 427 C5R APS TT on his C6, give him a jinggle. He's very cool about answering questions and has always answered mine.

excessive81

did he upgrade the turbos....i thought aps was the one saying the turbo's where to small for BIG block sizes

Mr.Big

HPPerformance TT kit would warrant a look and add 2 76mm turbos (which they do offer)...

Dvlray6

Currently 12:1.

mdhmi

That's much too high for boost IMO.

SSJCreeper

... and just what pray-tell are you going to do with an F/I Devil Ray? 600 ponies is not enough for you? You are a sick man Mr. Dunn!

To echo a few other posts, the current 112 Maggie won't do you much good. The upcoming 122 may be a better bet, but I'm not sure how much boost you'll want to run on the 12:1 CR. I know my boys at LPE were working on some new projects around the 122 Maggie. You might try calling Jeff Myers to see if he can recommend something for you.

Sicko!

JJSC6

For a FI 427, I would do the KB 2.8 or the HP 70+ mm turbo kit.

APS WILL NOT flow enough air for those cubes. It will "fall flat" on it's face after spooling.

I don't think Eaton has a big enough "blower" for those cubes yet either.

A centrifugal will probably generate too much heat over 800 rwhp, without alot of intercooling.

Not sure about the KB at 427 cid, but it is a "killer" as far as power curve goes, if it does indeed work.

Either way you are going to have way too much car for the street or a road race course with a 427cid FI unless the boost is WAY down.

On the strip though with a built automatic trans and some BIG pre-loaded turbos, you will own!!!!

My .02

Good luck!

0APS

The APS C6 ZO6 intercooled twin turbo system will be released mid 07.................this will be ideal for your 427 application.

Happy holidays,

Peter

backchannel

Peter
Can you give cam spec that made 1080hp with GT 30's? There are many posts about this size not running big ci and as I'm using a 427 is cam spec critical?
thanks
tom

Dvlray6

Thanks Peter. Any preview on what the 427 TT kit will put out? What kind of boost? If you guys need a test car for this, give me a call - twdunn@fuse.net .

And, Doug... - what can I say. HP is addictive. I am torn now between the APS TT, a 150 wet shot, or the larger maggie...

What to do???!!!

0APS

I suspect that the LS7 engine will needs forged rods and 9:1 forged pistons to run more than 6 PSI........with forged rods and pistons I suspect the ZO6 twin turbo will run 750 to 800 whp on 93 octane fuel at quite conservative boost pressure.

Peter

Blocktrdr

I would be very intersted in this as well. Are you using an LS7 cam? Something custom?

Devilray, I will get back to you with thoughts soon.

Dvlray6

I currently have this package that includes forged rods, so besides the piston swap, what else will I need? What all will be included in the kit?

http://www.motorsporttech.com/print/...rochure01.html

I want to stay WAAY ahead of any potential blue devil nonsense.