Rearend advice
Thread Starter
Pro
Joined: Sep 2012
Posts: 610
Likes: 12
From: Seattle Wa
That didn't come-off exactly as I intended but it "got your attention" which it was supposed to do so .................. SORRY!!
The D44 regardless of ratio choice does way more for the car than anyone's "reman/rebuilt" D36
What does the $999 D36 build assure you? What parts are 'for sure' new, what brand and warranty! Is there a new clutch pack OR just what they say is satisfactory and did they actually check? Have they given you any assurance that it will be 'quiet' - have they told you they've confirmed clutch-pack break-away? Does the build include short-axles? There's much to ask and confirm.
The ship for just a differential ain't no big thing - I use a tote anymore because it's easy to pack and secure the differential, I can be reasonably sure that because it has handles it ain't going to be tossed around and dropped because someone didn't realize it's weight.
The D44 regardless of ratio choice does way more for the car than anyone's "reman/rebuilt" D36
What does the $999 D36 build assure you? What parts are 'for sure' new, what brand and warranty! Is there a new clutch pack OR just what they say is satisfactory and did they actually check? Have they given you any assurance that it will be 'quiet' - have they told you they've confirmed clutch-pack break-away? Does the build include short-axles? There's much to ask and confirm.
The ship for just a differential ain't no big thing - I use a tote anymore because it's easy to pack and secure the differential, I can be reasonably sure that because it has handles it ain't going to be tossed around and dropped because someone didn't realize it's weight.
The $999 gets you a complete rebuild. New bearings, shims, clutches, seals, and gears of your choice. Yes, the axles are in stalled, and clearances set. Warranty is 3 years, unlimited miles. I talked to Zip on Friday, and they are giving 10% on orders over $850, so really only $900.
I was just reading something about an adapter corvette mods have, that adapts the 44 pumpkin to the 36 carrier, gonna have to have a look. Thanks for your time! h
Last edited by hemivett; Mar 18, 2017 at 08:33 PM.
Platinum Supporting Vendor
Joined: Sep 2001
Posts: 3,665
Likes: 341
Our differential is fully rebuilt, we install all new bearings, seals, clutch pack and gears. Everything is cleaned and inspected. The diff looks brand new when you get it, you really would have no clue that the housing is a used housing. As far as a 44, no doubt you cant go wrong with a 44. Getting one for under a grand, probably not going to happen. Using a D36 cover on a D44, very bad idea. You will need a D44 rear cover and C beam as well. The D44 c beam is a little wider at the the diff and you need the extra support. The driveshaft is also a 1/4 shorter, but you can shorten yours. Hope this helps
Race Director
Joined: Jan 2012
Posts: 17,062
Likes: 166
From: United States
I went through 3 D36's before I realized D44 was the wiser choice. The 3 D36s were behind a 93 LT1 auto with 1.6 rr and flownmaster exhaust. D36s will break, especially if you hook up and do allot of spirited driving on the street, which will happen when you go from a 2.59 to anything higher than 3.08 and beyond.
L98 no more than a 3.08 gear, as she poops out at 4800rpm.
LT1 Auto, no more than 3.45/54 gear. LT1 6 speed, 4.10 is the best.
Just my opinion.
http://www.ikerds.com/ Builds Diffs for some of the companies that sell online..
Oh, if you want to see what it feels like to have 3.08 gears, drive on the highway, and put the shifter in 3rd gear vice OD.. I am assuming you have an auto..
L98 no more than a 3.08 gear, as she poops out at 4800rpm.
LT1 Auto, no more than 3.45/54 gear. LT1 6 speed, 4.10 is the best.
Just my opinion.
http://www.ikerds.com/ Builds Diffs for some of the companies that sell online..
Oh, if you want to see what it feels like to have 3.08 gears, drive on the highway, and put the shifter in 3rd gear vice OD.. I am assuming you have an auto..
Last edited by krackenvette; Mar 18, 2017 at 11:03 PM.
Thread Starter
Pro
Joined: Sep 2012
Posts: 610
Likes: 12
From: Seattle Wa
Our differential is fully rebuilt, we install all new bearings, seals, clutch pack and gears. Everything is cleaned and inspected. The diff looks brand new when you get it, you really would have no clue that the housing is a used housing. As far as a 44, no doubt you cant go wrong with a 44. Getting one for under a grand, probably not going to happen. Using a D36 cover on a D44, very bad idea. You will need a D44 rear cover and C beam as well. The D44 c beam is a little wider at the the diff and you need the extra support. The driveshaft is also a 1/4 shorter, but you can shorten yours. Hope this helps
Platinum Supporting Vendor
Joined: Sep 2001
Posts: 3,665
Likes: 341
We do make a HD D36, the cover has welding in support block like a 44 does to help support the diff. With that said, there are no guarantee's, you can break anything and that included a D44. It really depends on your car and how you drive it. If you have a set of 315's or 335's in the back, you would be wiser to go the D44 route. We have a lot of HD D36's out there and they are still driving. I believe a HD 36 would be find, but it is better insurance to go to a 44 but its expensive so you have to be honest with yourself about your real driving intentions. A 44 is going to set you back several thousand by the time it is all done.
Race Director
Joined: Jan 2012
Posts: 17,062
Likes: 166
From: United States
We do make a HD D36, the cover has welding in support block like a 44 does to help support the diff. With that said, there are no guarantee's, you can break anything and that included a D44. It really depends on your car and how you drive it. If you have a set of 315's or 335's in the back, you would be wiser to go the D44 route. We have a lot of HD D36's out there and they are still driving. I believe a HD 36 would be find, but it is better insurance to go to a 44 but its expensive so you have to be honest with yourself about your real driving intentions. A 44 is going to set you back several thousand by the time it is all done.
What does your company sell bat wing, driveshaft and a 3.54 geared 44?. How about that vice saying several thousand dollars.. a little exagerated imho, even though it meets definition of Several.
Last edited by krackenvette; Mar 20, 2017 at 10:26 AM.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
Thread Starter
Pro
Joined: Sep 2012
Posts: 610
Likes: 12
From: Seattle Wa
We do make a HD D36, the cover has welding in support block like a 44 does to help support the diff. With that said, there are no guarantee's, you can break anything and that included a D44. It really depends on your car and how you drive it. If you have a set of 315's or 335's in the back, you would be wiser to go the D44 route. We have a lot of HD D36's out there and they are still driving. I believe a HD 36 would be find, but it is better insurance to go to a 44 but its expensive so you have to be honest with yourself about your real driving intentions. A 44 is going to set you back several thousand by the time it is all done.
Team Owner
Joined: Sep 2003
Posts: 25,375
Likes: 2,734
Well honestly, I bought the car about 18mos ago, and the car has only been above 4k once. That was a burnout, and I took it to 5200. The whole thing was over in less than 3 seconds. Like I said in my earlier post, this car is too nice to beat on. Usually when I get sideways it's at 25 to 3500, and still less than 5 seconds. I have my coupe for autox, so I take my aggression out on it. Either way I am 50+ years old, my days of roasting tires until they explode are over. h
Platinum Supporting Vendor
Joined: Sep 2001
Posts: 3,665
Likes: 341
Several thousand. Yes, it can be more than 2k. But its cheaper than breaking 2 to 3 36's.
What does your company sell bat wing, driveshaft and a 3.54 geared 44?. How about that vice saying several thousand dollars.. a little exagerated imho, even though it meets definition of Several.
What does your company sell bat wing, driveshaft and a 3.54 geared 44?. How about that vice saying several thousand dollars.. a little exagerated imho, even though it meets definition of Several.
Thread Starter
Pro
Joined: Sep 2012
Posts: 610
Likes: 12
From: Seattle Wa
Judging from this comment maybe we're actually NOT talking about the car you posted snapshots of ... I mentioned that with the suspension modifications you posted snapshots of I thought the D44 would be a "value adder" - being a 'different' car maybe that's something that doesn't need to be taken into consideration.
Ok, I GOOD used D44 with lower miles on it and a 3.45 is close to 2k. A new rear cover is $1500, a really good used cover I have not seen below $600. the C beam you have to find, usually a couple of hundred for a 44. Cutting the driveshaft will be more than a $100 if you find a shop that will do Aluminum. I think I stand by my statement of Several Thousand. I still think the 44 is worth it but not everyone has 44 money. You can run across them cheap sometimes but you have to be careful. There are some 44 parts that are not available and if they are damaged or missing it is just a 44 going to have a hard time getting parts.
Last edited by hemivett; Mar 21, 2017 at 01:26 AM.
Racer
Joined: Aug 2016
Posts: 354
Likes: 54
I think I have every ratio D44 (3.08, 3.33, 3.45, 3.54, 3.73, and 4.11) that Chevrolet offered. Once my son decides what gearset he wants for his Vette that he races, I am likely going to part with all of the remaining.
I don't live in the States anymore, so it would be up to him to move the parts.
Sometime soon I will post all of this old stuff up for sale.
I don't live in the States anymore, so it would be up to him to move the parts.
Sometime soon I will post all of this old stuff up for sale.
Thread Starter
Pro
Joined: Sep 2012
Posts: 610
Likes: 12
From: Seattle Wa
I think I have every ratio D44 (3.08, 3.33, 3.45, 3.54, 3.73, and 4.11) that Chevrolet offered. Once my son decides what gearset he wants for his Vette that he races, I am likely going to part with all of the remaining.
I don't live in the States anymore, so it would be up to him to move the parts.
Sometime soon I will post all of this old stuff up for sale.
I don't live in the States anymore, so it would be up to him to move the parts.
Sometime soon I will post all of this old stuff up for sale.
Race Director
Joined: Jan 2012
Posts: 17,062
Likes: 166
From: United States
Ok, I GOOD used D44 with lower miles on it and a 3.45 is close to 2k. A new rear cover is $1500, a really good used cover I have not seen below $600. the C beam you have to find, usually a couple of hundred for a 44. Cutting the driveshaft will be more than a $100 if you find a shop that will do Aluminum. I think I stand by my statement of Several Thousand. I still think the 44 is worth it but not everyone has 44 money. You can run across them cheap sometimes but you have to be careful. There are some 44 parts that are not available and if they are damaged or missing it is just a 44 going to have a hard time getting parts.
No need to scare people about hard to find, be careful. Thats with anything. even rebuilt parts from reputable parts dealers can give you bad stuff. You are always rolling the dice with new, used and warranted stuff.
Platinum Supporting Vendor
Joined: Sep 2001
Posts: 3,665
Likes: 341
Ikerds sells the rearend cover 350... Not getting in a pissing contest. But price shopping can find things at pretty good deal.
No need to scare people about hard to find, be careful. Thats with anything. even rebuilt parts from reputable parts dealers can give you bad stuff. You are always rolling the dice with new, used and warranted stuff.
No need to scare people about hard to find, be careful. Thats with anything. even rebuilt parts from reputable parts dealers can give you bad stuff. You are always rolling the dice with new, used and warranted stuff.
Race Director
Joined: Jan 2012
Posts: 17,062
Likes: 166
From: United States
Are you telling me this or using to explain to someone??? I have probably bought more D44's then anyone on here. As far as Ikerds goes, they are great, but Pat died a year ago. I am not aware of them still buying, they may have some if they do, that $350 is really cheap for what I have seen. However the cover is only part of the puzzle, you will have close to $2500-3000 in a good D44 by the time you are done with it. It is still money well spent, but there are other options that look like they will be better that are not too far down the road. For example there are new D44 housings and covers around, they are expensive, but there is also a whole new diff coming that will use 12 bolt parts in it. That looks like it will be a little cheaper than a 44 but you will also be able to get all the parts easily. Not trying to scare anyone, just being brutally honest.
http://www.mcssl.com/store/ikerds-in...55231a8cd08019
http://www.mcssl.com/store/ikerds-in...erential-parts
Le Mans Master
Joined: May 2006
Posts: 7,708
Likes: 266
From: indy indiana
I bought my 44 off a fellow member that lives kinda close by. Been looking/waiting a while for one. Pumpkin, driveshaft, C beam, bat wing (307 gears)was priced at 850 bucks. Another member GAVE me a ring and pinion (345 gears). R and P is new, 44 has 2,000 miles on it. Getting someone to rebuild your pumpkin is going to be expensive..ZIP is offering a decent deal and about trouble free as it gets. Be patient, you will find a deal. throw in some new bushing and spring pads.