Only if one falls into my lap from heaven.............
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Only if one falls into my lap from heaven.............
Would go well on your LS3 Gary! :yup:
https://www.youtube.com/watch?v=DOcKqQjq1-0
We all seem to crave more power on here, but how far past 400rwkw can you safely go without forged internals on these motors?
I agree Rod, if you look at the LS3 & an LSA engine, they both share the same cubes but that's about it. Be a brave man charging an oldish LS above 400rwkw without addressing the bottom end, oil system etc.Quote:
Originally Posted by BLACK 346
As long as the tune is safe I would be more worried about the rest of the drive line. :lol:Quote:
Originally Posted by Micks
Yes, that could be the weak point that saves you ��Quote:
Originally Posted by whitels1ss
Yes not many A6 owners hold onto those autos when making serious power, generally opt for the stronger powerglide box :yup:
I know of one quite serious powered turbo car running a TH400 with around 3.07 (from memory???) diff gears (to help cruising) :yup:Quote:
Originally Posted by Micks
Yeah that would be the box to go imo Ed, still retain some road manners and ability to go on long distance trips.Quote:
Originally Posted by whitels1ss
Yeah Rod, I reckon it's the best compromise for a street car that gets used on the streets often.Quote:
Originally Posted by BLACK 346
Except those lucky enough to be in WA where Streetquick Performance does a drive-in/drive-out (only) 4L80 conversion which is very strong apparently.Quote:
Originally Posted by Micks
Why does it seem a requirement to lose a heap of gears in order to get a stronger box? Surely one can adapt a 6L90 from a Gen F GTS these days?
Could be quite expensive but might well be an option?Quote:
Originally Posted by white lie
I am wondering if it could be the fact that you would need many more parts in the same size box,
making more heat, requiring smaller parts which would in theory make the entire box weaker?
In the old powerglides all the parts are just big & strong.
Very expensive Gaz?Quote:
Originally Posted by Wonky
I was thinking of 6L90E too a while ago...
Some things I found were;
The 6L90E is longer than a 6L80E. So a tailshaft mod is required.
A new gearbox crossmember is required.
6L90E torque converter has a higher stall rpm. It is also a 6 bolt flex plate vs a 3 bolt
Software update is required in the tune for a different TCM within the gearbox vs a 6L80E.
Talking to a few Auto builders... the 6L90E isn’t bulletproof. Plenty have gone kaboom and sifting for gold in the trans pan. Yes they are better but still will eventually fail or need a freshen up with big HP and abuse.
The 4L80E is a stronger box. My bro is bolting one up to a LSX454 in a HK. Beauty of the 4L80E vs a TH400 is that you get a strong box with an overdrive. Great for cruising and getting the RPM down so the motor isn’t revving it’s guts out on the highway.