blown my trans

09-26-2005, 04:18 PM

my car is makeing about 600 hp ive built my 4l60e 6 times ive got about 4000 dollars in it. im looking for the best advice on a trans swap. ive heard talk about a 4l8oe swap. i want to keep the overdrive and not go to a 3 speed. does anyone out there no any thing about the 4l60e swap.

09-26-2005, 04:20 PM

i know the 80e is heavier and bigger and longer. but will my computer shift it and will it even fit.

***Ed Blown Vert*** · 09-26-2005, 04:45 PM

Did you rebuild it back to stock??

Sarge · 09-26-2005, 05:33 PM

My question also^^^^^
A properly built/beefed 4L60 should handle that kind of power.....
What kind of driving are we doing? What kind of Trannie heat are we seeing and for how long?
Trannie Cooler/Good synthetic fluid/TransGo Shift Kit/Proper shift points and firmness coupled with a "tuned" Stall Converter and you can stop rebuilding your trannie....heat is the number one killer of transmissions....

Qpred98 · 09-28-2005, 04:12 PM

The 4L80E will fit. You'll need a tci tranny controller or a different wiring harness for your stock PCM to control the 4L80E.

There are a couple of tranny places that are said to have 4L60E's that hold up to 600rwhp. Rock-on Transmissions, Rossler, and FLP. I'd suggest doing a search for those names and 4L60e. Also, for the $4000 you put into your 4L60E over time, you could've paid like $24-2600 and had one of these 600rwhp trannies. Or even a beefed up 4L80E and a $1000 converter they call for.

10-01-2005, 06:31 AM

my trans was not stock the last guys that built it at ptc are well known for building race transmissions. it lasted about two months they said that the trans could not handle that kind of power especially when im running a 273 gear in the rearend. the reason for this gear is street racing i can spray a 200 out the gate on the street and never blow a tire. thanks for the advice, i think im going to put a 350 turbo in it since all i do is race with the car.

10-26-2005, 09:59 AM

09-26-2005, 04:18 PM	#1
J-MACSLS1 Guest Posts: n/a	blown my trans my car is makeing about 600 hp ive built my 4l60e 6 times ive got about 4000 dollars in it. im looking for the best advice on a trans swap. ive heard talk about a 4l8oe swap. i want to keep the overdrive and not go to a 3 speed. does anyone out there no any thing about the 4l60e swap.

09-26-2005, 04:45 PM	#3
*Ed Blown Vert* Blown, Stroked, & Sprayed Join Date: Aug 1999 Location: Sunny San Diego, Ca Posts: 14,694 383 Procharged & N20 Vert Black	Did you rebuild it back to stock?? __________________ Black 1999 Blown Convertible A4 Forged 383, ATI D-1SC NX MAF Kit \| 222/226 .585 115 AS Stage II 6.0L FI Heads Moser 9" \| 3.70 \| Wavetrac \| 35 Spline \| Vigilante 3600 548.0 RWHP - 536.8 RWTQ - 10# - D1 666.0 RWHP - 734.2 RWTQ - 125 Shot - P1 Black 2008 GMC Yukon Hybrid 4WD DDM 55w 5000k HID Hi/Lo GMX-322 LockPick WeatherTech Cargo Liner Gunner 6 20" Wheels

09-26-2005, 04:20 PM	#2
J-MACSLS1 Guest Posts: n/a	i know the 80e is heavier and bigger and longer. but will my computer shift it and will it even fit.

09-26-2005, 05:33 PM	#4
Sarge Let'sPartyLikeIt's1959 Join Date: Aug 2005 Location: Texas Department of Corrections Posts: 16,940 So many warnings we made him a mod	My question also^^^^^ A properly built/beefed 4L60 should handle that kind of power..... What kind of driving are we doing? What kind of Trannie heat are we seeing and for how long? Trannie Cooler/Good synthetic fluid/TransGo Shift Kit/Proper shift points and firmness coupled with a "tuned" Stall Converter and you can stop rebuilding your trannie....heat is the number one killer of transmissions....

09-28-2005, 04:12 PM	#5
Qpred98 Veteran Join Date: Aug 2005 Location: Tomball, TX Age: 30 Posts: 25 1998 Firebird Formula Red-orange metallic	The 4L80E will fit. You'll need a tci tranny controller or a different wiring harness for your stock PCM to control the 4L80E. There are a couple of tranny places that are said to have 4L60E's that hold up to 600rwhp. Rock-on Transmissions, Rossler, and FLP. I'd suggest doing a search for those names and 4L60e. Also, for the $4000 you put into your 4L60E over time, you could've paid like $24-2600 and had one of these 600rwhp trannies. Or even a beefed up 4L80E and a $1000 converter they call for.

10-01-2005, 06:31 AM	#6
J-MACSLS1 Guest Posts: n/a	my trans was not stock the last guys that built it at ptc are well known for building race transmissions. it lasted about two months they said that the trans could not handle that kind of power especially when im running a 273 gear in the rearend. the reason for this gear is street racing i can spray a 200 out the gate on the street and never blow a tire. thanks for the advice, i think im going to put a 350 turbo in it since all i do is race with the car.

10-26-2005, 09:59 AM	#7
GTOPT Guest Posts: n/a