DO i have to fix up my tranny???

[08mgsierra]

I recently sold my old truck and got myself a new sierra with the 5.3. I want to buy a procharger for the truck but i want to know if i need to fix up my tranny and my rear end.

[aarolar]

Technically you don't have to till it blows.

[rutroe]

I would say it really depends on how you intend to use it. I was told 5 psi would be fine for a long time on my stock tranny and rear end. I'm planning on running 10 so I'm upgrading the tranny to an FLT lvl 5. If you dont plan on any hard launches or racing, you would probably be fine with stock...Also depends on what tranny and rear you have now...

[GasGuzzler]

...but do you have a 6L80 or a 4L60?

[08mgsierra]

lol i know huh..but i want to avoid blowing it up..

[aarolar]

lol i know huh..but i want to avoid blowing it up..

Then yeah I would definitely look into getting it beefed up or 4l80 swap.

[08mgsierra]

i have the 4l60

[GasGuzzler]

Then I agree with the above. Worry about fixing it when it blows.

[08mgsierra]

Well i just want it for some sunday racing u know once in a while.. How much would it cost me to beef up my tranny??

[RedHeartbeat]

depends on what you call beefing it up. Converter alone can cost you $1000 + installation. Tear down to improve durability can cost another $1500 for R&R and parts depending where you take it. Rear end is easily another $1000 worth of parts and labor if you do limited slip/posi and gears. A tune to just get you started is up to the tuner.