whats the most hp a 4l60 can handle reliably
11-13-2007, 06:41 AM
#1
whats the most hp a 4l60 can handle reliably im looking to dump my stick so I can run some respectible times and im also going to do some motor upgrades that will put me in the 750-800rwhp range, will a 4l60e hold this power level? the car will be on the street 95% of the time with a trip to the track at most once a week. what kind of expieriance have you guys had with these trannys?
11-13-2007, 07:02 AM
#2
Well, we have a vast experience with 4L60E's. If you run one at those projected power levels it should be considered a high maintenance unit. It was originally engineered to handle less than 4oo ftlb torque. We can get them to live just fine in 600 hp apps long term... but 650 and up begins to stress them considerably. They were designed as a medium duty transmission.
If you want a transmission that will last without any worries whatsoever go with the 4L80E. It is based on the TH400, is an overdrive and can take that H/P level and much,. much more!
A 4L60E can do the job, in my opinion it must be considered an underdog though. It is going to break, more than once. We can build them with heavy duty 5-pin planet assemblies, sleeved drums, hardened shafts etc, but at the end of the day it will break. Whereaas the 80E will keep on going. It is physically heavier, physically larger. It will require some mods to the car inorder to get it installed and running... but IMHO it is the wise choice for the power you are planning. Hit me with a p.m. and I will get you some info on the 4l80E swap that would help you with your decision.
Hope that helps.
g
If you want a transmission that will last without any worries whatsoever go with the 4L80E. It is based on the TH400, is an overdrive and can take that H/P level and much,. much more!
A 4L60E can do the job, in my opinion it must be considered an underdog though. It is going to break, more than once. We can build them with heavy duty 5-pin planet assemblies, sleeved drums, hardened shafts etc, but at the end of the day it will break. Whereaas the 80E will keep on going. It is physically heavier, physically larger. It will require some mods to the car inorder to get it installed and running... but IMHO it is the wise choice for the power you are planning. Hit me with a p.m. and I will get you some info on the 4l80E swap that would help you with your decision.
Hope that helps.
g
Last edited by Gilbert@Ace Racing; 11-13-2007 at 09:04 AM.
