cainsw

iTrader: (11)

I'm swapping my 6 speed over to an auto and I'm trying to decide what way to go. I have a track only 99 Z28, weighs 3350 with me in it, has spooled 4.30's with 28" Hoosier QTP's. It is currently a cam only stock heads and shortblock car with all the bolt ons. Cam is a TSP 228/228/581/581 112lsa. Currently has run a best of 11.29@121
I have heard that a glide is better in a lighter car and takes the least amount of power, the 350 is good but the 400 is better, will handle more power but takes more to run. I really do not care what trans I go with I just want the one that best for my setup but I just do not know how to figure out which is a better fit for my setup or what stall I need. I tried the search but couldn't really find what I was looking for.

This is a cam only NA car that is 99.999% track use only. Any help or advice would be appreciated.

performabuilt2

4l80e same as a 400 except for the 4th gear and lockup

slammer454

As said above i'd go with a 4L80E, but if those are your options, then i'd choose a glide.

cainsw

iTrader: (11)

I'm looking for a slightly cheaper route than the 4l80. Don't get me wrong I'd love to have that setup but the racing budget just isn't that high

performabuilt2

400 then to get a pproperly built glide you will spend just as much for a 80

cainsw

iTrader: (11)

Yea I figure if you build a real pg you will spend a ton of cheese

Top Fuel

iTrader: (8)

th350 is the best choice for an NA setup. The 4l80/400 are unnecessary, they'll just use extra power. If you get a powerglide, you'll be kicking yourself in the *** the first time you look at your 60'.

jmill96Z

iTrader: (3)

If you think you can plant the tires pretty well, go with the TH350. If you are traction impared go with the PG

MeanWS6

RMVB Th400 w/T-brake gives you a more versatile tranny; best mod I have done by far

cainsw

iTrader: (11)

What would be a good converter for a car with my setup and a mv th350 with a brake?

MeanWS6

is that all your going to run or do you plan to get some cubes or spray to justify the swap

cainsw

iTrader: (11)

I might step up to a 408 or something later on but not right now.

dlove

iTrader: (23)

I have a glide with about 375hp on motor and 60' 1.55. still has some left in it but im not to upset over it, as it will go out on the street and 60' the same thing.

DanZ28

iTrader: (5)

Since it's track only, you don't need a 4l80 as 4th gear and OD is no good anyway. I say TH400 for your current and future goals. You should be able to get a nicely built TH400 for under $1500, I used Rossler, but we have a lot of good vendors here to use. For N/A, I'd say a stall in the 4400 area would be nice.

Your car weighs about the same as a go-cart, lol. I wish mine were so light.

382ssz28

iTrader: (24)

A properly assembled 350 is little more than a 400 with the 36 element sprag and drum assy. The 400 has a true center support and will take punishment for alot longer, but will cost a tenth. The 350 is lighter and uses less power. It has a 2.52 1rst gear-400 2.48. If you spend a little more, you can get the gear reductions. They take the same converters. Since your ride is so light, a 350 would work great! If it won't hold your power, the 400 is a good back-up. You can still use the converter! Good luck.

MeanWS6

from experience, based on your current setup and future plans go with TH400 with a 4K stall. Great NA and great on spray and you have NOTHING to worry about

cainsw

iTrader: (11)

Lol, yea it does but it will be lighter very soon. It was a factory stripper with only 3 options: Hurst shifter, GSC tires and a CD player It was already light but I've since pulled the ac compressor, PS and the seats. It'll be getting a K member, manual rack and brakes as soon as I get this trans swap over with. I've got 3100# race weight in mind.

I talked to Craig at Coan to see what he would suggest and he said either a PG or a th350 with an 8" 5000 stall. He says a pg will probably give up .1-.15 but would be a bit more consistent but not really a huge difference in the two.

Any of you guys run an 8" converter? Do you have to have a special flywheel or will the 98 model still work? Too many pros and cons. You think a 5000 is too much?

DanZ28

iTrader: (5)

Hard to say on the 5000 stall. If the Coan rep was up to date with your whole setup, then he would probably no best. I think a 5000 stall would rock on your car personally, as long as you stay N/A. Did he rate the stall based on a trans-brake setup?

BTW, I gained a ton going from 4l60/4000 stall to a TH400/4800 stall, in the tune of .7 in ET (from 11.4 to a 10.7) and 7 mph (from 119 to 126) with the only other difference being I went from an LS6 intake to a FAST 90/90. I don't know why I gained so much, but I won't complain .

Dan

dlove

iTrader: (23)

he was talking about my car being light...

btw i went 1.52 on motor (~375hp) with the glide last night. That was footbraking to about 4k. Any more and the rear tires were starting to spin on the line. I have a 4500 stall so that makes since.

what are your raceweight goals? I had a 400 in my car before I built my glide and I love the glide WAY more.

Gilbert@Ace Racing

Lot's of good advice here. The 400 and the Glide would be the units I would choose from. A 350 is just going to prove to be high maintenance in the long run, especially if and when you stroke it.

A well built Glide for that application would include 4340 straight cut gears and a 9310 output shaft. That is just under $1000 at most any supplier. Then you'll want to have at least 8 clutches in the drum, rear piston cut down to accept at least one and maybe 2 additional clutches, a billet steel dual ring servo, MVB with a brake, deep pan and hardened input shaft. That unit would ordinarilly run around $2,500 or so.

A well built 400 would run around $1,500 - $2,100 depending on how it is loaded out.

Hope that helps.

g