there is a 4 digit designation on it… the first digit is a number and designates the Model yr… the 2nd digit is either a “B” or a “C” or a “D”….. the B is for 6L50, the C is for a 6L80, and the D is for a 6L90….. so for example…. a 1DKA is a 2011 model yr 6L90 transmission…. the last two letters is the …
How can you tell the difference between a 6L80 and 6L90 transmission?
What is the difference between 6L80 and 6L90 transmission? The main difference between the 6L80 transmission and 6L90 transmission is the strength of the internal components. The 6L90 transmission case is 1-3/8” longer, which provides extra room to house two additional pinion gears (6 total).
What is the difference between 6L90 and 6L90E?
The 6L90e is a heavier-duty version of the 6L80E, Upgrades consisted of a strengthened input gear set and a strengthened wider output gear set. The 6L90E also contains one more clutch plate in each clutch pack than the 6L80 for heavier duty applications.
How do I know what Chevy transmission I have?
Chevrolet transmissions can be manual or automatic. Automatic transmission on a Chevy can be identified in one of two ways: You can look at the size of the pan on the transmission or you can search for the identification number that has been stamped somewhere on the casing.
Are 6L80 and 6L90 interchangeable?
The 6L90 case is about 1.4″ (35mm) longer than the 6L80 case. According to GRRRR8.net: “The body of the case is slightly taller by maybe a 1/8” (and a slightly different slope) and the length is longer on 6L90…. everything else is same…..
How long will a 6L90 transmission last?
It is validated to achieve 200,000 miles of operation in typical applications.
Are 6L90 transmissions good?
Is the 6L90 a good transmission? The 6L90 transmission is not a terrible transmission. In fact, it is a high-performance component capable of handling up to 700 horsepower. Along with the 6L80 model, this transmission powers the best cars and trucks that GM offers.
Which transmission is better 6L80 or 6L90?
The gearing spread is a very capable 6.04, with ratios in each gear as follows: compared to your stock JK auto transmission you can see a 6L80e has a much better 1st and second gear along with 2 overdrives. The 6L80 has a maximum RPM limit of 6500 RPM. … The 6L90 case is about 1.4″ (35mm) longer than the 6L80 case.
How much HP can a 6L80E handle?
They feature custom nitrided steels to prevent warping, and more durable clutch linings that are more resistant to heat. With these modifications, a 6L80E can handle 500 to 600 rear-wheel horsepower in the typical street/strip application, although we have had customers push them all to the way to 1,000 hp.”
How do I identify my old GM transmission?
The easiest method of GM automatic transmission identification is to examine the transmission pan. New transmission designs came with new, unique pan shapes, and the general shape of the pan often paints a fairly clear picture of which automatic transmission you are dealing with.
Is the 6L80 better than the 4L60?
Registered. Gear ratios are wayyyyyyyy better for MPG, towing, performance, acceleration you name it. And a stock 6L80 can handle more power through it than almost any built 4L60.
Will a 6L80E bolt up to a LQ4?
As long as you don’t have an early LQ4 with the longer crank, the 6L80E should bolt up. Controlling it is another matter. You really need a GenIV engine/ECM to work with it, or a MAST controller. I think Speartech may also offer a kit that will work with an LQ4/6L80e, but I’m not positive.