ONEBADWS6

iTrader: (22)

Just curious what the loss was, also can you state what convertor your running. Thanks.

BIGBOS

Its over 20% total loss I would say.....

With MTI stage 2 heads and a 230/227 .591/.571 112lsa cam, all my other bolt ons, etc.......heads/cam setup.....

I dynoed 367rwhp and 4xxrwtq

With the 6-speed I would of been well over 400rwhp and 400rwtq

Car went the time in the sig with that raceweight

The Juggernaut

iTrader: (7)

No Brian, you're GUESSING what it would be with H/C on an M6.

He's looking for a before and after dyno with just installing a TH400.

BIGBOS

Ok, well I know of a guy who had a 6-speed and an identical setup to mine X1/MTI S2 heads, he was 426rwhp and 4xxrwtq.........its a loss no matter what way you look at it, cam only with a 222/222 .561/.561 112lsa I made 353rwhp and 375rwtq once againt through a TH400.......

Just trying to help....

BIGBOS

Another thing I just remembered a friend of mine dynoed right at 400rwhp and 390rwtq with a 4l60e, heads/cam package.........after the TH400 he was at 370rwhp and 390rwtq.......

Boo ya!

Lesrace82

iTrader: (8)

Is the loss in HP between the 4L60E and the TH400 due to the 400 not being a lock up convertor trans?

Pro Stock John

iTrader: (34)

My locked and unlocked A4 numbers usually differed by 25-30rwhp.

ONEBADWS6

iTrader: (22)

My old H/C setup got 388rwhp. When I had just a cam and a M6 I had 403.5rwhp.

Hawkn01

iTrader: (1)

I plan on doing the swap to a t-400 myself. Would a carbon fiber driveshaft,and changing the 12 bolt posi to a spool with gun drilled axles offset the loss some ?

Pete2k_Z28

Without a doubt. Rotating weight is (literally) 10x more critical than static weight. Shaving 10lbs from the drivetrain would free up a bunch of power. Of course, the cost of a custom CF driveshaft, drilled axles, and the lack of drivability with a spool is something you have to consider for yourself. For that price you may want to consider a 200-4R first. Sure, it will cost more up front but they are way more efficient, and still have OD.

CHRISPY

About 30RWHP compared to the 4L60 and close to 50RWHP with an M6

ONEBADWS6

iTrader: (22)

That sounds about right.

TimZ28

My last setup was ARE Stage II H/C with a TH400 and 9-inch. My car made 365 RWHP with the TH400 (no lockup). I sold my H/C to a guy with a 6-speed/10-bolt. His car with the same tuning pulled 410 RWHP. I had a 4500 Yank TC btw.

Tim