96 Beretta Project

[3400-95-Modified]

Well it's a 3.69 ratio already, and I can't go to 3.73 unless I swap out my final drive ring which also includes swapping back to the older 1-2 roller sprag and so on.... I'm not about to start changing all those parts to older revisions just for a measly .04 ratio change.

I can't remember what the 2095 brake stall's to, but I know before I couldn't get it too high before the car would start to creep, so I know now the brakes will hold it better so I can get a better number out of it.

I can tell you what a 2050 will stall to on a factory 3400... close to your power output, thats the converter I have in Ole Red... 2050 took the place of the 2095, but its almost exactly the same.

And for converters.

http://www.makcotransmissionparts.com/4T60Etc.html

FD9B for a 2095 converter, stock is FG9B

Or

http://www.transmissionpartsusa.com/Torque_Converters_s/6355.htm

He has a FD9B you can choose from right on his list.

99 from TPUSA and 133 from bulkpart... (B21 with proper code) You decide... Just stay away from Viscous clutches, they don't work well in our application.

[IsaacHayes]

Thanks!! So what is the stall of the 3400 with a 2050/2095? Or do you have to test that out and get back with me?

[torq455]

i'm fairly certian that the brake torque on a 3400 will be close to 2500 rpm on that converter. why not go with a converter out of a late 90s lumina or equivalent? my 97 brake torque was 2800.

[IsaacHayes]

Mine IIRC is right at 2000, but that's me babying it and not pushing on the brake much at all.. LOL The listed stall is 1650 I think. I plan to go with a 2095 probably from a W body buick century. Which would come out to about 2500 if the same rules apply on my car. So that sounds about right.

What lumina are you speaking of? Maybe the TDC 3.4L?

[torq455]

no. my 97 base 3100. my Z stock and current convert torque stalls are 2500.

[3400-95-Modified]

2600 on my car at WOT, Pumped brakes and mashed gas, they actually held it in place.


Posting from iPhone need anymore info?

[3400-95-Modified]

i'm fairly certian that the brake torque on a 3400 will be close to 2500 rpm on that converter. why not go with a converter out of a late 90s lumina or equivalent? my 97 brake torque was 2800.

To reply to this, I have a 2095 that's built up, and I had that done last year sometime, I also had this PDQ which is confirmed by them to be a 3195 stall... So I'm trying to work as cheap as possible here and not spend anymore money... My brake wear parts alone were over 500 bux... never mind all the other parts that went into it, so I'm already very tight on my budget that I didn't even want to spend this year. With paint over the winter, I killed any huge purchases regarding power and speed this year... except for just bolting on my NOS kit.

[IsaacHayes]

Pffft, you still need to install a CSC, 1.8:1 rockers and the flux capacitor.

[3400-95-Modified]

According to Ben, 1.8's aren't the best way, I think he said I should go with 1.6 on the exhaust and 1.7's on the intakes... and that's $$ when they do come out... so thats next year.

Flux capacitor is still in testing... I would hate to put that in and then have it blow a fuse or something... those are a pain to install, I hate getting shocked by it.

And CSC? missing that one.

Also on the block for next year, if all goes well I'll be going to the 10.2:1 compression Diamond pistons... POSSIBLY... depends on what else is going on.


EDIT
WHOOPS...
I take that back on the rockers, He said 1.8 intake 1.6 exhaust....

1.8/1.6 works for you. You can go more on exhaust but it does almost nothing. 1hp at 1.8/1.8. 1.7 intake says 4hp and 1.8 intake says 13hp and raises peak hp 500rpm to 6000.

26986 springs are good for .640 lift but I have't checked the seal to retainer clearance past .600. Since it doesn't really help, I would bother with it.

going from a 1.6 to the 1.8 on the exhaust was only worth 1hp more, and 1.7 intake only was 4hp I think, but just the 1.8 intake 1.6 exhaust swap is worth 13hp and 500 Peek RPM, if I'm reading that correctly...

[torq455]

13 hp and 500 more rpm...is that on your build or a stock 3400? big difference there!

[3400-95-Modified]

According to him that was on my 3400 with 3500 heads and my cam... I did ask for a simulation of my setup, so I don't think he quoted that for a stock 3400

I already have a shit ton of lift, so a ratio change is not as helpful to me as some others.

[IsaacHayes]

You could keep the stock exhaust roller fulcrum rockers to save $$. Not like the extra friction loss of the tip on the exhaust is going to make much of a difference. True it won't look as cool as having all the same rockers, but who looks under the valve covers anyway??

Do you mean 10.5:1 from the 11.5:1 (stock 3400 gets you this) pistons?

[3400-95-Modified]

You could keep the stock exhaust roller fulcrum rockers to save $$. Not like the extra friction loss of the tip on the exhaust is going to make much of a difference. True it won't look as cool as having all the same rockers, but who looks under the valve covers anyway??

Do you mean 10.5:1 from the 11.5:1 (stock 3400 gets you this) pistons?

I thought that too on the rockers, but then I figured if I'm going to 1.8 full rollers, I'm gong to do both 1.8 and 1.6 since I don't want the weight to differ between the exhaust and the intake.. THAT will make a difference.

I'm sure Ben will offer an option where you can get a split set... I doubt Scorpion wont sell them in sets of 6.

As far as the compression, yeah your right, I thought it was 10.2 with whatever there was for the 3400, but yeah the 11.5 3400 pistons would net me a 10.5 CR on the 3500 top end. That change alone may give me an additional 25-30hp...

Ben if your reading... My cam in a hybrid setup, slightly ported, 65mm tb, headers and the 10.5 CR... What gains over my current 9.15:1 CR?

[3400-95-Modified]

Well I figured, rather than tag my Base model as a Z26 just because I put the kit on it, I would leave it unmarked... I think representing the parts supplier is better fit

[bszopi]

Nice! Now you just need to recess it to match the Chevy badge.