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Old 11-09-2013, 05:59 PM   #18
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Thanks allot guys! Awesome day, yes I have 2.48 first with a 3.45! I am bearly getting out of second gear! Would be allot faster with 4.10s but this is street car so the I am keeping the 3.45s, just add some power and play with the suspension now.
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Old 11-09-2013, 06:05 PM   #19
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Nitrous! It wont give a damn what the first gear is!
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Old 11-09-2013, 06:51 PM   #20
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Nice improvement!
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Old 11-09-2013, 06:59 PM   #21
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Nitrous! It wont give a damn what the first gear is!
Lol this is a option I might concider. I would actually like to do a 416-427 stroker down the road too.

Right now I am thinking intake work and a rear drag bar. Get my 1-2 shift sorted out and who knows, might see 11.5s!! I just drove 1.5hr home, 2600rmps doing like 65 and used a 1/4 tank. Not bad at all for a little street car, I am happy!
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Old 11-09-2013, 07:16 PM   #22
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Its not cheap but later on down the road if you are wanting an Overdrive there is always the Gear Vendors.

Thats good stuff though, especially seeing your cam is a pretty mild cam. Im pretty jelly your still racing this far into November too. Even though even if the tracks were open here my broken POS is sitting in the garage .

You planning on staying NA?
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Old 11-09-2013, 08:47 PM   #23
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Badass! !!!
Wonder what drive train loss there is going from M6 to a TH400? Question: why a TH400 vs a 4L80E?
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Old 11-09-2013, 08:56 PM   #24
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No power loose since I went 117.7mph! Best with the m6 was 116.3, the th400 might show less on the dyno but who cares! Th400 I already had, the 4l80 is a more complicated swap and allot more money.
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Old 11-09-2013, 09:08 PM   #25
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Its not cheap but later on down the road if you are wanting an Overdrive there is always the Gear Vendors.

Thats good stuff though, especially seeing your cam is a pretty mild cam. Im pretty jelly your still racing this far into November too. Even though even if the tracks were open here my broken POS is sitting in the garage .

You planning on staying NA?
I would like to stay NA, I want to see just how fast I can go with this combo. I still can do a under drive pulley, manifold work, and suspension. Just fixing my 1-2 shift is gonna help too, even some front runners.

My goal is to have a 427 stroker, run 10s NA. But who knows blowers and nitrous sound tempting some times.
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Old 11-09-2013, 09:50 PM   #26
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No power loose since I went 117.7mph! Best with the m6 was 116.3, the th400 might show less on the dyno but who cares! Th400 I already had, the 4l80 is a more complicated swap and allot more money.
Cool, thats good to know. Yeah I don't go by dynos either.
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Old 11-09-2013, 10:51 PM   #27
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Very nice, is it an automatic valve body? If so, I could manually hold out the shifts they happened to fast by manually shifting.
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Old 11-09-2013, 11:44 PM   #28
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Stock valve body, but I shift myself. I can hold second as long as I want, but first gear is shifting second at 6200-6300 by itself! I guess it's because I dont have 12 volts going to the trans. I talked to a guy at the track that told me to hook that wire up ad it will let me hold first like I can hold second.

My olds only spun to 5800rpms so I never new it would even shift without me doing it till now! I figure I should be 6700-6900 going into second, as a 7k shift into 3rd is what got me 117 traps! So I am definetly short on 1-2 right now
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Old 11-10-2013, 12:16 AM   #29
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Great times! I have an old th-350 with a reverse manual valve body sitting in the shed. Never thought of putting it under my 5th gen. 3 speed ftw!
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Old 11-10-2013, 12:51 AM   #30
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Great times! I have an old th-350 with a reverse manual valve body sitting in the shed. Never thought of putting it under my 5th gen. 3 speed ftw!
Dude I would run that th350 all day!! It would be even faster, the th350 had 2.58 first gear if I remember right! I love this swap, I wish I could gear it up more but I don't want to kill my drivability as its still good. A 4.10 would put this car low 11s easy, but I just don't want to go down that road again.
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Old 11-10-2013, 05:28 AM   #31
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There is a small screw inside the modulator valve you can adjust if you
want to mess around with shift points. Its been many years ago since I ran a th400
but you may not be running a mod valve....just thinking back.
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Old 11-10-2013, 06:52 AM   #32
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Stupid trans is short shifting itself into second early because I don't have the 12 volts running to the trans I guess. But man she's running awesome, I am able to hold 2nd as long as I want, shifting it at 6800. Need to get 1-2 worked out, might have 11.6!
Hi 12 volts is just for down shift. If you have the trans in drive and put it to floor and it is short shifting itself into second. Need to work the governor weights /springs.
A quick test to check. Put power wire to kick down on side of trans. With switch and drive it.
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Old 11-10-2013, 08:59 AM   #33
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400 plus gear vendors OD vs 4L80? Still cheaper with the 400 plus gvod? Honest question.
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Old 11-10-2013, 12:41 PM   #34
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I put the trans in first gear, and would like to hold first till I want to shift. What happens now is I put in first, and it goes into second with my shifter still in one. So what I need to do is mess with the governer?

I am not sure about the gear venders, I don't have any plans on running one as the car as is drives great. I might decide to step up to 3.73s when I get a truck, but really I can still drive 70mph with the 3.45s, it's a good setup for a street car. Pretty sure I will get in the .5s with this setup and when I am ready to put some REAL power down, it might be better to actually have this gear.
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