its an 03- i'm not sure if its 4l60 or 4l65? anybody know how to tell diff? glove box code or on tranny? I just have one tire fire, no g-bomb here, and barely enough power to fry one tire let alone two.
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its an 03- i'm not sure if its 4l60 or 4l65? anybody know how to tell diff? glove box code or on tranny? I just have one tire fire, no g-bomb here, and barely enough power to fry one tire let alone two.
Really no differene in trannys they r both weak. Do a 4 80 swap and don't look back. If u want to keep ur 4/60 do circle d 278mm stall if u tow. It will wake up that 5.3Quote:
Originally Posted by sloCaddy
i must be one of the lucky ones. i take mine to 130 all the time on 4.30's. the 2 piece driveshafts seem to be stronger from what ive seen though.Quote:
Originally Posted by farmtruc
converter locked with 4.30 gear and 305/45-18 tire puts me between 2400-2450 RPM. 7100 rpm puts me at 132 unlocked if anyone cares lol. i know my max mph unlocked was a question i couldnt get answered when i was trying to decide between 4.30 and 4.56.Quote:
Originally Posted by lechez71
oh ya, not really lucky, now you're talking two shorter shafts, which just increased the critical speed considerably.Quote:
Originally Posted by TXsilverado
for the long trucks out there, 2 piece is definitely the way to go for high speed.
That answers my question. Thank you Allen.
hate to thread jack but i have 05 gmc sierra cc z71 3.42's looking to tune it soon, what would the benifits of getting the circle d 278mm be or not much for me with those gearsQuote:
Originally Posted by Green Machine