Whats the best parts to build the a4? where do i get them from? Or if anybody knows a good shop in Charlotte NC to get it built id appreciate it. im looking at about 550 with nitrous and that seems a little high for the stock trans. let me know if im wrong. thanks
Rob

 

www.lt1dave.com

Trust me it is worth shipping it to him.

visit www.gcfba.com and put up a post asking for peope who use his trannies. We all love them, and are running some serious HP. I have his stage 3 behind a 383 4500lb Imp SS, and it ROCKS!

 

did you go with one of his converters? what did shipping cost for you? thanks
Rob

 

I have a converter which he installed, but i dont know if its one listed on his webpage or not. Mine is a 3000 stall, made by coan i think?

He is local for me, so i didnt ship. Shoot him an email and check on shipping, i know he does out of state stuff pretty often.

 

I have the level 4 on a 700r4.It has been bullit proof so far..Level 4

 

Before you buy into a "bullet proof A4" you may want to ask some people who have ran that builders tranny with a decend shot of nitrous for multiple seasons.

Typically, a nitrous motor will make much more torque than an NA motor of the same peak hp. I'm assuming if your've at 550rwhp on gas, then your probably running between 600-700rwtq, depending on the size shot your using to get that 550rwhp. That's a huge difference compared to most h/c LT1's or even 383s (typically running 400-450rwtq)

I've went through a couple of supposed bullet proof rebuilds myself before scrapping the 700R4. I'd do some more research and keep your options open if you're looking for a tranny that will live for a decent amount of time behind a high torque nitrous motor. A TH350 or 400 with Gearvendors or a 4l80 may be needed with your setup if you want to retain 4th. They arent cheap options, but neither is a $1500 rebuild every 6months to a year. Been there - done that...

 

im hoping to get about 450 n/a then a 100 shot on top of that so its an average to small shot of juice.

 

For a torque estimate from nitrous - Take the nitrous hp shot you are using and multiply times 1.5 - That will give you the approx torque increase. Your 100shot will give you approx 150 #s of torque. Assuming your NA torque is close to your NA hp and your discussing rear wheel figures, instead of flywheel, then you're looking at approx 600rwtq total.

 

Not to step on anyone's toes here, but the term "Bulletproof 4L60E" is a pipe-dream at best.

I had a 4L60E that had identical (and a few upgraded parts) in comparison to lt1dave's Level 4 trans behind my 396, and it had to be "freshened up" within a year. I went with a T-56.

That's just how it's going to be. If you can spend the money to "freshen up" a 4L60E every year, then go for it. If not, I'd suggest a different transmission.

The only way it will last multiple years is if you are going to be relatively easy on it and see only a few passes at the track per year.

Mike

 

"Bulletproof" - that's the exact word I heard from my tranny builder 6 months before the 4l60 let go (for the 3rd time in 2 years).

 

Just so this doesnt get out of whack, jeff said his "has been bullit proof so far".

Dave hates the term bullet proof b/c a bullet proof tranny doesnt exist. simple as that. But if you want one that is made just about as good as possible, for a great price, he is the guy to see.

 

No one was pointing fingers at Jeff, we were simply discussing the 4L60 and the word bulletproof, since it seems to come up in every "built 4l60" thread. Now that you mention it, I think Jeff was refering to the fact that the tranny has been working well for him so far - That's not the same thing as bulletproof though, and the orginal poster needs to know that, since he looks to be going down an expensive road to multiple a4 rebuilds. 'Cause if "as good as possible" can't meet your hp/torque requirements, then you need to look at other options. Hopefully Dave would tell that to his customers as well - not all builders will.

 

Agreed!

 

i realize there is no such thing as bulletproof,weather it be a trans, a motor , a rearend or whatever stuff will break with wear and torque. theres no doubt im gonna atleast try to build the 4l60e first and if that doesnt work then i'll look at other options. i do enjoy having overdrive though. thats the only reason im not going with a 350 or 400. i've seen cars with more torque and hp than mine with the 4l60e and still lasting. with as little of track time it wil see i dont think it can hurt to try. (maybe 20 runs a year) i do more quick street racing. anyways guys i really appreciate all the feedback and the suggestion of daves.im talking with him now through e-mail. thanks again
Rob