Anyone tried TCI's new 4L60E Boost Valve, PN 374501?

It's supposed to increase line pressure to decrease slippage and increase pressure to the clutch plates, band to drum, etc.

Worth it or not?

Thanks,

Jake

 

Boost valves work. I would avoid tci like the plague though. There quality is terrible.

 

Thanks, Pete. I didn't know that. I had to go with them for a neutral balance flexplate because no one else I could find made one.

Whose valve would you recommend?

Jake

 

Jake, I probably bought the same neutral Flexplate.
I had to buy 2 of these...
the first was not round!! (there was a difference of 2,5 mm on the position of he center round hole) it was not in the center!
Have you checket it for rounout?
-Beppe-

 

I use Sonnax boost valves.
Sonnax is THE quality trans part company. In my opinion, everything they make is gold.

 

No, I didn't. I just gave it a simple once over to see if there was anything obvious, then bolted it on. That was back in June, 07.

To date, I haven't noticed anything out of the ordinary.

What would that 2-5mm off center cause? I suspect it would show up in starter engagement, right?

Jake

 

I don't know how to better explain in plain english..
My concern was the really "neutral balance".
The only internally balanced "neutral balance" flexplate for 1pc rear seal with 153 tooth is the ATI flexplate http://store.summitracing.com/partde...3&autoview=sku
It was not available .

So I checked my tci TCI-399174
http://store.summitracing.com/partde...4&autoview=sku
to see if it was neutral balanced even if it is without the stock wheight.
So I used a "thing" (i don't know how to call it in English) that is a balancer "thing" used to balance the bicycle /bike wheels. It allow to turn the wheel an see how "imbalanced" is....so you can add the little weights. with this "thing" you can also measure how much the wheel is "out" the circumference in relation to the center and how much is "out" laterally (how much is really flat).
The first flexplate was out 1,5 mm (center) and 1 mm (laterally).
Unacceptable (for me) for an engine perfect balanced with all money put on it...
The second one was out 0.5 mm (center) and 0.030 mm laterally (almost perfect flat).
It was (as expected) with more wheight in the side with the edge more far from the center.
I made 2 little holes and it was perfect 0 neutral balanced.
I hope I better explained.

-Beppe-

 

I can appreciate your "Attention to Detail" in selecting a flexplate that met your specs.

I'm just wondering what "bang for the buck" did you receive. Not arguing, just wondering: What was the benefit derived?

In other words, what would have been the downside of going with the flexplate that checked .5mm (center) and .030mm laterally? If you had installed THAT flexplate, what would have been the negative consequences?

Jake

 

I built a 4l60E for my 94 Blazer, I used a lot of Sonnax parts. Including their boost valve. If you buy the Transgo kit it comes with the over sized boost valve as well. I think the Transgo valve is the biggest you can get.

 

...uh, what's a "boost valve" and what does it do?.for the automatic i presume?..installed into the valve body?

 

My initial post says all that I've read that it's suppose to do.

Yes, it goes in the valve body and can be installed with only a drop of the pan and the removal of the fitler. More than that I don't know.

Jake

 

I just went to Sonnax's site (I'd never even heard of them before, thanks for that info) and I was amazed at the number of different parts they offer.

So, without having to do anything more than dropping the pan and filter, which parts would you guys recommend? I don't want to get in over my head.

Yea, I can install a Trans Go kit, (I've installed trans kits before) but even that is more than I want to tackle right now. So other than the Boost Valve, what else would you recommend?

Remember, I don't want to spend much time on my back.

Thanks,

Jake

 

...duh..i guess it would have helped if i saw it..no idea how i missed it!...

 

Jake, On my actual engine I tried to take care of all little and big details.
Pete K , that assembled the engine knows how many messages I sent him to be assured on every detail, even the most insignificant.
The rotating assembly has been balanced without the flexplate.
It is a internal balance Callies Crank,with Manley H rods and SRP custom forged pistons.
So the condition was to instal a neutral balanced flexplate.
Stock L98 haves the flexplate with a small weight attached to the it.
The neutral balanced doesn't have it. This condition (the lack of te wheight) , can let us say that the flexplate is neutral balanced?
I say NO.
The "uncentered" one was obiuovsly with mORE weight on one edge of the flexplate.
Ony some grams? Yes. Spin it to 6000 rpm, and tray to imagine how this "imbalance" can affect the internally balanced assembly.
Probabaly i'm a bit "****" ...

 

My new 388 was built the same way, internally balanced without a flexplate. When I ordered a new SFI flex-plate from CNC-Motorsports, they sent me one with a weight it. When I called to tell them it was the wrong one, I was told "Just knock the weight off".

Well I knew that wouldn't guarantee me the flexplate would then be neutrally balanced. So began my quest to find one that was truly a neutral balanced plate.

I read up on TCI's offering and I became convinced, from what I read, that their product was actually neutral, so I bought one. Relying on the fact I was familar with the company name and from all I read, I just bolted it up, without checking further.

I have a nephew who's, without a doubt, a LOT ****. I kid him about it all the time. He's the one with the 05 GTO who was dying to race my 96 LT1 when it had the stock engine. Now that I've built the 388, he begging to be set out several cars. Talk about being 'nervous in the service", he is now, BIG-TIME. LOL

Take care,

Jake