How Much Power Can A 3.4 Rearend Handle? - CamaroZ28.Com Message Board

Go Back  CamaroZ28.Com Message Board > 1967-2002 Powertrain Discussion > V6 Tech
How Much Power Can A 3.4 Rearend Handle? >

How Much Power Can A 3.4 Rearend Handle?

V6 Tech 1967-2002 V6 Engine Related

How Much Power Can A 3.4 Rearend Handle?

Old 09-09-2017, 07:25 PM
  #1  
Registered User
Thread Starter
 
Join Date: Jul 2017
Posts: 103
Question How Much Power Can A 3.4 Rearend Handle?

My aunt has a '95 3.4l Camaro that I might buy and I'm curious just how much power it's T5 transmission and rearend can handle. I know it's stock numbers are 160 hp and 200 ft-lbs torque.

So if I put a carbed 5.0, 5.3, or 5.7 at 225-260 hp could it's drivetrain handle that power? The reason I ask is because I already have a Z/28 so I'd just want a fun little quick car that's got more pep than the 160 horse 3.4l.
97rebuiltZ28 is offline  
Old 09-09-2017, 10:19 PM
  #2  
Super Moderator
 
Injuneer's Avatar
 
Join Date: Nov 1998
Location: Hell was full so they sent me to NJ
Posts: 66,983
Re: How Much Power Can A 3.4 Rearend Handle?

The rear axle assembly (but not the rear axle ratio) is the same for all 4th Gens - 7.625" 10-bolt. Same rear they used in the 97 Z28 in your signature, and 300+ HP SS's, Firehawks, LS1. 260 HP is no problem. They do become fragile if you run sticky tire's on a well-prepped track, with high RPM clutch dumps. The 3.4L did not come standard with the G80 limited slip rear or disc brakes.

T5 is the problem. GM would not use them with the 350ci L98 engines because of the L98's high torque (245 HP/330 lb-ft). They only used it with the 305ci LB9 (190-235 HP/275-300 lb-ft). Basic T5 is rated 265 lb-ft, World Class is 300 lb-ft. Not sure which one they used w/ the 3.4L.
Injuneer is offline  
Old 09-09-2017, 10:42 PM
  #3  
Registered User
Thread Starter
 
Join Date: Jul 2017
Posts: 103
Re: How Much Power Can A 3.4 Rearend Handle?

Thanks for the answer. So I guess I'd try a 305 with like 225 hp and 265 ft-lbs.

One more question about the rear end. I always heard that the V6 4th gen fbodys had open differentials whereas my Z28 has limited slip. Hence the one wheel burnouts for the V6 and two wheeled for the v8 cars. Is this true? Or are they the same rearends with just a different traction system?
97rebuiltZ28 is offline  
Old 09-10-2017, 10:26 AM
  #4  
Super Moderator
 
Injuneer's Avatar
 
Join Date: Nov 1998
Location: Hell was full so they sent me to NJ
Posts: 66,983
Re: How Much Power Can A 3.4 Rearend Handle?

Answered that above:

Originally Posted by Injuneer View Post
?...... The 3.4L did not come standard with the G80 limited slip rear or disc brakes.......
Originally Posted by 97rebuiltZ28 View Post

One more question about the rear end. I always heard that the V6 4th gen fbodys had open differentials whereas my Z28 has limited slip. Hence the one wheel burnouts for the V6 and two wheeled for the v8 cars. Is this true? Or are they the same rearends with just a different traction system?
While not "standard equipment", might have been available as an extra cost option. Check the service parts tag in the glove box or end of driver's door for RPO code "G80 which indicates the limited slip differential, same unit that was standard equipment in your V8. If there's no G80 on the tag it's an open diff.

The service parts tag will also indicate the rear axle gear ratio:

GU2 = 2.73
GU3 = 3.08 (most likely w/ the V6)
GU5 = 3.23
GU6 = 3.42
Injuneer is offline  
Old 09-10-2017, 02:01 PM
  #5  
Registered User
Thread Starter
 
Join Date: Jul 2017
Posts: 103
Smile Re: How Much Power Can A 3.4 Rearend Handle?

Originally Posted by Injuneer View Post
...The 3.4L did not come standard with the G80 limited slip rear or disc brakes.
Thanks again, I'll check the glove box sometime. I guess I overlooked that quote on your original reply.
97rebuiltZ28 is offline  

Thread Tools
Search this Thread

Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.