What kind of gain to expect goin from SS3800 to PT4400 converter?
11-05-2007, 04:44 AM
#1
What kind of gain to expect goin from SS3800 to PT4400 converter? Just like the title says, once I get my trans built I'm going to switch converters. What kind of times and mph can I expect? Also this will be with 3.42 gears instead of the 2.73s I have on now. Last summer, I managed a 12.5 @ 113 with a 2.1 60' in +1900DA with the headers and cam. Car got retuned afterwards but I haven't tested it since.
11-05-2007, 04:49 AM
#2
11 Second Club
iTrader: (16)
Join Date: Jan 2005
Location: Southern Oklahoma
Posts: 861
Likes: 0
Received 0 Likes
on
0 Posts
You will run even worse if you dont throw some god damn tires on your car. Doesn't that 2.1 60ft tell you something? It tells me you need tires.
If you get tires the 4400 will get you off the line quicker. but I wouldn't even move up until you see what your 3800 will do with some decent rubber on those rears.
If you get tires the 4400 will get you off the line quicker. but I wouldn't even move up until you see what your 3800 will do with some decent rubber on those rears.
11-05-2007, 04:52 AM
#3
The car didn't spin with the tires it just came off the line really soft which is why I had it retuned. The tires did manage a 1.7 and I've seen them hit high 1.5s. But now they have to get changed, they are almost at 3 years old now and it's starting to finally show. 
11-05-2007, 04:57 AM
#5
I haven't had a chance to go back and see but I used to launch the car at 3500rpms and that's how I got my best time, I tried to do it again after the mods and it just didn't hit as hard as before. I have to get back out there that's for sure but I know that the PT4400 pulls harder than this converter which is why I want to know exactly HOW much harder.
11-06-2007, 09:17 AM
#6
your gears are probably killing you out of the whole, that converter should have been perfect for your setup though... if you hadn't had it tuned it could of been going lean out of the whole and just falling on its face. I had a ss3600 w/bolt ons and cut 1.6x 60's and went 12.20's all day
Trending Topics
11-06-2007, 03:15 PM
#8
TECH Resident
Join Date: May 2006
Location: SoCal
Posts: 858
Likes: 0
Received 0 Likes
on
0 Posts
11-06-2007, 03:19 PM
#9
10 Second Club
iTrader: (8)
Join Date: Apr 2004
Location: Portsmouth, VA
Posts: 2,247
Likes: 0
Received 0 Likes
on
0 Posts
2.73's actually work really well with a stall of that size. it allows you to launch at a high rpm and still leave rather soft. the size of the gear is stronger than anything 3 series you could be racing on. I would 60 foot 1.65's on stock suspension and 3700lb car with my old Yank ST3800 stall.
11-06-2007, 05:11 PM
#10
TECH Resident
Join Date: Feb 2006
Location: Panama City Florida
Posts: 934
Likes: 0
Received 0 Likes
on
0 Posts
2.73's actually work really well with a stall of that size. it allows you to launch at a high rpm and still leave rather soft. the size of the gear is stronger than anything 3 series you could be racing on. I would 60 foot 1.65's on stock suspension and 3700lb car with my old Yank ST3800 stall.
11-06-2007, 08:21 PM
#11
I wouldn't count on the nittos holding with a PT 4400, but if they do you'll pick up .1 - .2 in ET and probably 1 mph.
2.73s will be pretty miserable as daily driver with a 4400. Tweaking the shift points would help a bit if you haven't already done so.
2.73s will be pretty miserable as daily driver with a 4400. Tweaking the shift points would help a bit if you haven't already done so.
11-06-2007, 11:38 PM
#12
Thanks for the responses, I want to upgrade to 3.42s to make it a bit tighter around town. My 60' suffered after the cam was put in. I would be able to launch pretty high in rpms with the 2.73s before the cam. Now it's weird, car is pushing forward on the brakes if I try to go past 2500rpms and 60' 1.9-2.1 and still only get a 12.5 out of it, which was why I got it retuned to hit harder off the line but I haven't tested it yet. MPH did increase though.
11-10-2007, 05:16 AM
#18
If I'm gonna go with a PT series, it will be the 4400. If I do go that way, MTs will be used daily (talk about going through tires) or I may just get 2 sets of rims and use nittos for 1 pair and the MTs for the other. I'm gonna keep the car N/A, I want a good hard hitting stall, 3.42 gears to get the most out of city and highway mpg. As far as motor, I'm looking at the LSX blocks and will go 427 or more but that's after I work out the drivetrain.
Last edited by Roarin_8; 11-10-2007 at 05:24 AM.
11-10-2007, 08:01 AM
#20
PT4400 here and loving it....upgraded from a SS4000 and the PT is superior in every way IMO. Upgrading to a 9" with 3.90's soon so that should tighten things up nicely. It's not that bad with 3.23's, but gears are definitely in order. You'll love it.