madmike9396

iTrader: (29)

Automagic FTW

SLOW SEDAN

iTrader: (13)

Since you need a stronger rear and better tire anyway why not do that first and run it again with the manual? Then when you swap in the auto you have a true comparison of what the trans alone gained rather then what trans, tire, and rear gained together. No reason a well driven manual on proper tire can't run a 1.5 60' which will drop your quarter mile time drastically for a better comparison.

Game ova

You have a valid point. But where I live, the season is over. I'm hoping I can just get the auto in before next season, as it's likely that I won't have the funds to do all three at once...being trans, rear, and tire. Hoping for trans, and a tire. And with an auto being easier on parts...I'm hoping to get at least a few hits with this rear end.

The BallSS

iTrader: (9)

Lmao.
I love my six speed but 12.34 @ 123 mph in the 1/4 is pretty laughable.
Still keeping the six speed though lol.
Those 17's hooked like no other too!
What size and tires are they?

Game ova

Not sure on his tire size, I do know they are really tall though. It's sickening to see his car running so good, for what it is. It's a junkyard motor that had bad bearings...slapped new ones in and went racing. To make it even worse, it's an Ls1 on 93 octane . And it seems you and I are in similar shape, with lopsided ET in comparison to trap. 11.33 @137 here I've had enough of it, I want the car to run like it's supposed to.

99Z28LS1

iTrader: (4)

I switched from a M6 to a TH400 (still under the knife) because I had already put in a semi-built T56 and it cost WAY too much. Add all the other **** and the costs went even further. My bult 400 was a quarter of the price. If it breaks, I'll switch to a glide.

oscs

iTrader: (19)

28" tire and 3.73 or even lower gears are perfectly acceptable for a 700+whp Fbody. There isn't really a perfect formula. In a heavy *** car like yours a TH400 would do great on the street But a glide would do better at the track. Which is more important to you? The point I was trying to make was that there is a lot of BS info on the web surrounding the powerglide. It is a great trans on the street.

Game ova

Oh no, I don't disagree that a glide will work. But I was talking about being optimal for the standard heavy f body. I'm thinking the 3rd gear would work wonders, over a glide at the track (no hard data...just thinking out loud).

necrocannibal

iTrader: (5)

Full weight and I was recommended a turbo 400 with a 3.23 or 3.08 gear by the shop that built the car.

Game ova

Personally I think the 400 will be a better choice for our mid level power, coupled with our heavy cars. I just can't see them running good with a glide. Maybe it would be different if we were in 4 digit power....but not as it is now though.

oscs

iTrader: (19)

Get out and drive one if you can. If you do go TH400 I would spend the money to get that long first gear.

Game ova

I'm not exactly sure what to do. I recently geared the car high (2:73 25 inch tire). Im not sure if the long 1st would help me or hurt me at this point. Granted, it would be much easier to change rear ratios than transmission ratios. But I just don't know yet.

dt23400

iTrader: (1)

literally just picked up my th400 last night and is going off to the builders next week. i was loosing to way to many cars that were slower than me from a dig. time to make some money. i could not get out of the hole to save my life.

oscs

iTrader: (19)

Your rear gear is 2.73? And you have a 25" rear tire on an Fbody?

Game ova

Yup. Was running 3:42, blew up the rear end....and wanted to try 2:73 to keep the car in the powerband longer. Feels great on the street with this 6 speed, but is very tricky at the track. Funny thing is, it still trapped the exact same. I'm hoping the final drive ratio will be about where I need it to be to go well with the 400. And it's looking like I will have the 400 by this weekend. 315 35 17...25.6 inch tire.

oscs

iTrader: (19)

I would toss a 28" tire under the car and the 400 and see what it does wth that 2.73

coltboostin

The fact that the pass, the build, and the result is so BLAH keep the manual in my car. Does it seem like every turbo auto SBE LS goes 9's or high 8's turned up? Its does, because they DO LOL. Its an easy equation that has been duplicated a million times now.

If you want a car that will A to B at a 1/4 mile track, go auto. Hands down.

I still have too much fun enjoying my car on the street, occasional road course, and even less frequent drag strip visits to make the switch. But, if your purpose is only to chase an ET goal, Auto, lower gear, and a turbo is what you need.

Game ova

Yea, will probably put some 295 40s under it. Just don't know if I will have a track worthy rear end by the beginning of the season though (baby steps). Either way, I will make some hits. If nothing else, to see how far I can push this 10 bolt with an automatic.

coltboostin

And in anyone in this thread has a well used T56 they want to off because, well its obviously junk, I'll be glad to find a use for it

Game ova

Well YOU sir are in luck! I'm getting ready to pull mine out and get rid of it. It will also come with an 18lb flywheel...and a Monster stage 5 clutch which is in excellent condition. Only thing is, the transmission does whine, but it shifts into every gear just fine. Let me know if you're really interested and we can take care of this through PM.