Auto trans swap questions....?
Thread Starter
Burning Brakes
Joined: Sep 2007
Posts: 903
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From: New Orleans LA
Auto trans swap questions....?
What is the difference between the 4l60e in the C5 corvette and the 4l65e in the '05 corvette? It seems like common practice these days to swap the mn6 trans (Z06) for an auto trans when drag racing is the chosen past time.
Is the C5 trans the better choice or is the '05 C6 trans better?
Is the C5 trans the better choice or is the '05 C6 trans better?
Last edited by lfsglass; Aug 5, 2009 at 05:08 PM.
Thread Starter
Burning Brakes
Joined: Sep 2007
Posts: 903
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From: New Orleans LA
Is the C5 (4l60e) auto trans and the '05 C6 (4l65e) auto trans similar......which is better?
Last edited by lfsglass; Aug 3, 2009 at 10:30 PM.
Advanced
Joined: Jul 2007
Posts: 63
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From: Fairfield California
I don't think anyone offers the "upgrade" parts for the A6 trans yet (it won't hold up as well to higher levels of HP) and I've heard the 4l60e is better suited for the drag strip.
Is the C5 (4l60e) auto trans and the '05 C6 (4l65e) auto trans similar......which is better?
Is the C5 (4l60e) auto trans and the '05 C6 (4l65e) auto trans similar......which is better?
The 4l65e was developed with a five-pinion planetary gearset as opposed to the four-pinion setup in the 4l60. The 4l65 also has teflon washers in between the gearsets, the 4l60 does not. The extra gearset and teflon washers allows the 4l65 to withstand a greater level of torque and operate at higher speeds than the 4l60.
Last edited by quick Ag; Aug 4, 2009 at 03:12 AM. Reason: grammar
Thread Starter
Burning Brakes
Joined: Sep 2007
Posts: 903
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From: New Orleans LA
The 4l65e was developed with a five-pinion planetary gearset as opposed to the four-pinion setup in the 4l60. The 4l65 also has teflon washers in between the gearsets, the 4l60 does not. The extra gearset and teflon washers allows the 4l65 to withstand a greater level of torque and operate at higher speeds than the 4l60.
Advanced
Joined: Jul 2007
Posts: 63
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From: Fairfield California
In my unprofessional opinion I would say the 4L65 is the better choice simply because it was developed to handle more torque and higher speeds than the 4L60. A stock 4L65 would stand up adequately behind the LS7, but for rock solid reliability you should give the guys at RPM transmissions ( forum vendor) a call and ask about their level IV and V 4L65 automatic transmissions. Their transmissions will more than suit your needs.
Pro
Joined: May 2007
Posts: 699
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From: Dallas TX
In my unprofessional opinion I would say the 4L65 is the better choice simply because it was developed to handle more torque and higher speeds than the 4L60. A stock 4L65 would stand up adequately behind the LS7, but for rock solid reliability you should give the guys at RPM transmissions ( forum vendor) a call and ask about their level IV and V 4L65 automatic transmissions. Their transmissions will more than suit your needs.
check with RPM. Maybe they will come on here and teach us all about the two trannys.
Thread Starter
Burning Brakes
Joined: Sep 2007
Posts: 903
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From: New Orleans LA
I have a thread started and it seems to be a topic of interest:
http://forums.corvetteforum.com/c6-t...questions.html
Would you mind explaining which of the two options would be the wiser choice?
The C5 components or the C6 components.....what is the difference between the trans, torque tube, bellhousing, flexplate, collar, ect.
What parts are needed to convert the C6Z to a 4l60e/4l65e auto trans?
Thanks,
Steve
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Safety Car
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From: Middle of No where AK
The a4 is the same in C5 and C6 but the spline for the rear end is different I believe. The A4 is better for drag racing as its much easier to plot the shift points etc. It has also been proven to last as the A6 still has a way to go. Your going to get a lot of a4 haters and 05 c6 haters in general who are going to have a biased opinion just because they paid more for their cars.
Thread Starter
Burning Brakes
Joined: Sep 2007
Posts: 903
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From: New Orleans LA
The a4 is the same in C5 and C6 but the spline for the rear end is different I believe. The A4 is better for drag racing as its much easier to plot the shift points etc. It has also been proven to last as the A6 still has a way to go. Your going to get a lot of a4 haters and 05 c6 haters in general who are going to have a biased opinion just because they paid more for their cars.
Thought I'd have more people who have researched this or actually done this conversion chiming in. I'd like to know what is needed to complete the conversion and if the remaining parts needed are the same from a C5 as a C6.
Is the spline in the C5 different than the C6? Is the spline from the C6 different from the C6Z?
Maybe this is in the wrong section.....?
Last edited by lfsglass; Aug 6, 2009 at 10:24 PM.
Race Director
Joined: Mar 2005
Posts: 11,549
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From: Southampton NJ
I'm definately going fpr the A4 trans......
Thought I'd have more people who have researched this or actually done this conversion chiming in. I'd like to know what is needed to complete the conversion and if the remaining parts needed are the same from a C5 as a C6.
Is the spline in the C5 different than the C6? Is the spline from the C6 different from the C6Z?
Maybe this is in the wrong section.....?
Thought I'd have more people who have researched this or actually done this conversion chiming in. I'd like to know what is needed to complete the conversion and if the remaining parts needed are the same from a C5 as a C6.
Is the spline in the C5 different than the C6? Is the spline from the C6 different from the C6Z?
Maybe this is in the wrong section.....?
Racer
Joined: Dec 2007
Posts: 413
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From: Bradenton Fl
Ive talked to a local shop about how and what they would use in the C6Z swap to auto, and I mentioned using a 4L80e, and they replied back saying they only use the 6L80e(A6) in their swaps.
RPM does have a modified A6 tranny now from last I read. Not sure on the power ratings though.
Best thing of using the A6 over the 4L60/65 would be still able to "shift" with the paddle shifters.
RPM does have a modified A6 tranny now from last I read. Not sure on the power ratings though.
Best thing of using the A6 over the 4L60/65 would be still able to "shift" with the paddle shifters.
Thread Starter
Burning Brakes
Joined: Sep 2007
Posts: 903
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From: New Orleans LA
Ive talked to a local shop about how and what they would use in the C6Z swap to auto, and I mentioned using a 4L80e, and they replied back saying they only use the 6L80e(A6) in their swaps.
RPM does have a modified A6 tranny now from last I read. Not sure on the power ratings though.
Best thing of using the A6 over the 4L60/65 would be still able to "shift" with the paddle shifters.
RPM does have a modified A6 tranny now from last I read. Not sure on the power ratings though.
Best thing of using the A6 over the 4L60/65 would be still able to "shift" with the paddle shifters.
I wish RPM would chime in and offer some helpful advice.........
.......
Thread Starter
Burning Brakes
Joined: Sep 2007
Posts: 903
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From: New Orleans LA
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Melting Slicks
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From: Brentwood World's first A6 in the 9's (including N/A, blower, turbo and nitrous cars) 9.950@139.267 CA
Safety Car
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From: Bethesda MD
I'm fairly sure that I've seen others post about doing a 4L80 swap in the C6. If you plan to put down serious power, the 4L80 deserves a close look. Over the years I've seen a lot of so-called "built" 4L60's break, especially ones that are shifted at 7000 rpm or higher.
Thread Starter
Burning Brakes
Joined: Sep 2007
Posts: 903
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From: New Orleans LA
I'm fairly sure that I've seen others post about doing a 4L80 swap in the C6. If you plan to put down serious power, the 4L80 deserves a close look. Over the years I've seen a lot of so-called "built" 4L60's break, especially ones that are shifted at 7000 rpm or higher.
......still in the back of my mind though.Anyone have first hand knowledge of how susceptible the 4l60/65's are to damage? Any idea on the reliability of the A6 in high HP applications?
Former Vendor
Joined: Dec 2005
Posts: 418
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From: Anderson Indiana
Sorry for not posting earlier. TJ has been gone for a week and a half. He will be back in tomorrow. If you could give him a call, he can explain all the differences, and the benefits. He can also give you a price on the components, or us doing the swap. We've done quite a few of them now, and have many different options.
Todd
Todd
Pro
Joined: Jan 2005
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From: APPOMATTOX VIRGINIA
I'm currently using a an RPM Level 6 4L65 in my 402 stroker/nitrous 2006 C6. My 1/4 time with 2 100 shots was 9.65 @ 141 MPH with 373 gears. I plan to use 2 150 shots this Friday @ the local 1/8 track. The 4L65 trans. has operated perfectly. Within the next 2 months a 440" LSX with a 88 mm turbo, DTE built Z06 3.42 rear, RPM 4L80 trans., and many other changes will be installed in my car. Mayhem Motorsports in Raleigh, N.C. DOES ALL MY WORK. People in the vacinity of Raleigh please consider Mayhem for your needs Their # is 919-852-3766.
Last edited by tluck; Aug 12, 2009 at 02:07 PM.
