First run with powerglide need some opinions
Thread Starter
TECH Resident
iTrader: (3)
Joined: Oct 2006
Posts: 858
Likes: 0
From: edmonton alberta canada
First run with powerglide need some opinions So over the winter I swapped from a stock geared th400 to a 1.80 straight cut powerglide in a reid case, the car feels good and drives good and even seems to be running good numbers so far but the datalog looks strange and almost look like a 3 speed, the car does not seem like it wants to 60 foot very good either. Although I did not hit it with a whole lot of power yet either.
The car went 1.34 60fts with the th400 and ran 8.62@159
The combo:
1979 zephyr street car (3300ish lbs)
8.8 with 3.31 gear
275 drag radial
Trans specialties 3000 powerglide
column shift
PTC 9.5 custom converter
John deere Hyguard fluid
370 cid LSX
Twin 76mm turbos
2step set at 4400, launched on only 3psi
1.44 60 ft
3.72 330ft
5.64 1/8th et
127.75 1/8th mph
7.30 1000'
8.72 1/4 et
159.01 1/4 mph
If you look at the picture here the car comes off the trans brake and climbs up to 6295 rpm and then pulls down to 5925 rpm before starting to climb again in 1st gear. The logs look the same on all of the passes I made and 60 fts were about the same on most as well.
I am wondering if this is an issue in the converter or with the band adjustment on the side of the trans? or possibly something else?
Just curious what the gurus think.
You can hear it clear as day in this videos as well.
http://www.youtube.com/user/Black02X.../0/5nzMgIuBM1w
The car went 1.34 60fts with the th400 and ran 8.62@159
The combo:
1979 zephyr street car (3300ish lbs)
8.8 with 3.31 gear
275 drag radial
Trans specialties 3000 powerglide
column shift
PTC 9.5 custom converter
John deere Hyguard fluid
370 cid LSX
Twin 76mm turbos
2step set at 4400, launched on only 3psi
1.44 60 ft
3.72 330ft
5.64 1/8th et
127.75 1/8th mph
7.30 1000'
8.72 1/4 et
159.01 1/4 mph
If you look at the picture here the car comes off the trans brake and climbs up to 6295 rpm and then pulls down to 5925 rpm before starting to climb again in 1st gear. The logs look the same on all of the passes I made and 60 fts were about the same on most as well.
I am wondering if this is an issue in the converter or with the band adjustment on the side of the trans? or possibly something else?
Just curious what the gurus think.
You can hear it clear as day in this videos as well.
http://www.youtube.com/user/Black02X.../0/5nzMgIuBM1w
To me it sounds like it is bogging alittle after the initial converter flash. What does the slip look like out the back door? I would put more power to it or gear it more(if it can take the rpm on the topend).
10 Second Club
Joined: Dec 2008
Posts: 330
Likes: 1
Looks like you have a little bit of KR on your 1 - 2 shift. 1000 shift extension so I'm assuming it's not to loose on the converter. Not sure how the band could be the issue, I thought that was used for gear engagement when you shift.
Trending Topics
Joined: Nov 2001
Posts: 8,484
Likes: 0
From: Cecil County Raceway!!!
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo Thread Starter
TECH Resident
iTrader: (3)
Joined: Oct 2006
Posts: 858
Likes: 0
From: edmonton alberta canada
I will try hitting it harder, the car was 60 footing really soft but it would spin a little ways out so I will slow the controller down a bit but increase launch boost.
