4.8 to a t56
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From: Felton Pa
4.8 to a t56 I finally found a deal on a t56. I have found when I was first building my setup that an 03 Silverado with a 4.8 didn't have a manual transmission. My question is, will the pilot bushing fit the crank or will the crank in my 4.8 need to be machined? Any one know this?
Launching!
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From: North Dakota
Ive done two 4.8 manual trans combos and on both my cranks I used the corvette roller bearing and it fit right in.
This should be the bearing you need.
Heres one after a few thousand miles
This should be the bearing you need.
Heres one after a few thousand miles
Last edited by knuts82; Jun 23, 2013 at 08:00 PM.
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From: Felton Pa
That bearing pictured is not the correct bearing for an f-body or gto t56. That is an ls3/ls7 bearing. The f-body bearing is pressed into the inner bore of the crank and is recessed more than the bearing pictured.
Launching!
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From: North Dakota
The swaps I did were 4speeds and I just assumed that would work with the t56 also. Either way you just need the correct bushing or bearing and your set.
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From: Felton Pa
So I bought the t56 last night for $200. It didn't come with a shifter or bell houseing but the guy threw in a Spec twin disc clutch and flywheel. Should this fit without mods? I will shoot some pics later.
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Gary, I was thinking the same as you, but doesn't the 4.8L crank have a different offset, as compared to the LS1 crank? If the crank offset is less than a standard LS crank, then the Corvette bearing would be the right one.
To the OP. Whatever bearing you go with, I strongly suggest that you mock everything up first. I would install the pilot bearing and then install the transmission without the clutch. That way you can get a feel for how everything fits together. I would also recommend taking some careful measurements using the back of the block as the reference point.
Andrew
To the OP. Whatever bearing you go with, I strongly suggest that you mock everything up first. I would install the pilot bearing and then install the transmission without the clutch. That way you can get a feel for how everything fits together. I would also recommend taking some careful measurements using the back of the block as the reference point.
Andrew
The 5.3 and 6.0s have the dual flange, as far as I know the 4.8 shouldn't be different. Trying to remember this all, but I think the 4.8 does use the outer flange bearing with the truck NV trans. With an f body T56 the input shaft should seat in the inner flange bearing.
The issue with the T56 source would be the GTO specific bell/flywheel, and the CTS-V bell/T56 which uses the outer flange bearing. Not sure if the CTS-V bell is longer or input shaft shorter though
The issue with the T56 source would be the GTO specific bell/flywheel, and the CTS-V bell/T56 which uses the outer flange bearing. Not sure if the CTS-V bell is longer or input shaft shorter though
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From: Felton Pa
The t56 is out of a 2000 Firebird. I never looked at the back of the crank because of the auto trans. When I get all the parts together I will start the install. I'm sure its gonna have some issues, but I'm not expecting anything too terrible.
Dude that was a steal on the trans I'm jealous...but I wanted to mention you can just buy a factory 98-02 fbody clutch kit and flywheel and you are good to go...if you don't have the pressure plate and flywheel bolts already go with ARP's because not only are they cheaper than factory bolts, but way stronger for added insurance...and just to note there was only one year that a factory LS engined GM truck came with a manual trans, not sure of the year something like 05 or 06, but it happened to be behind a 4.8 of all engines which I thought was weird..
Oh and here are those ARP part numbers I pulled of my build page..
6. ARP LS1 Flywheel Bolts part number 330-2802
7. ARP LS1 Pressure PLate Bolts part number 134-2201
Oh and here are those ARP part numbers I pulled of my build page..
6. ARP LS1 Flywheel Bolts part number 330-2802
7. ARP LS1 Pressure PLate Bolts part number 134-2201
Thread Starter
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From: Felton Pa
Dude that was a steal on the trans I'm jealous...but I wanted to mention you can just buy a factory 98-02 fbody clutch kit and flywheel and you are good to go...if you don't have the pressure plate and flywheel bolts already go with ARP's because not only are they cheaper than factory bolts, but way stronger for added insurance...and just to note there was only one year that a factory LS engined GM truck came with a manual trans, not sure of the year something like 05 or 06, but it happened to be behind a 4.8 of all engines which I thought was weird..
Oh and here are those ARP part numbers I pulled of my build page..
6. ARP LS1 Flywheel Bolts part number 330-2802
7. ARP LS1 Pressure PLate Bolts part number 134-2201
Oh and here are those ARP part numbers I pulled of my build page..
6. ARP LS1 Flywheel Bolts part number 330-2802
7. ARP LS1 Pressure PLate Bolts part number 134-2201
Yep all 4.8/5.3/5.7/6.2 engines have the same crank, pretty much all 6.0s do too with exception of early 99 cast iron headed 6.0s which have some kind of weird crank that I believe has an extension or something like that...
And OP your wife is right if people don't know what they have the F them, this isn't American Pickers where they offer people more they what want just to look good for TV lol...I found an ad on Craigslist for my super t10 Borg Warner 4 speed that came with crossmember, clutch, pressure plate, clutch fork, driveshaft, etc. for $300, which is a screaming deal even though your buy blows mine out of the water lol...if you ever wanna sell that t56 for $500 ill let you make the $300 off me lol!
And OP your wife is right if people don't know what they have the F them, this isn't American Pickers where they offer people more they what want just to look good for TV lol...I found an ad on Craigslist for my super t10 Borg Warner 4 speed that came with crossmember, clutch, pressure plate, clutch fork, driveshaft, etc. for $300, which is a screaming deal even though your buy blows mine out of the water lol...if you ever wanna sell that t56 for $500 ill let you make the $300 off me lol!
...I found an ad on Craigslist for my super t10 Borg Warner 4 speed that came with crossmember, clutch, pressure plate, clutch fork, driveshaft, etc. for $300, which is a screaming deal even though your buy blows mine out of the water lol...if you ever wanna sell that t56 for $500 ill let you make the $300 off me lol!
Launching!
Joined: May 2012
Posts: 249
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From: North Dakota
Yep all 4.8/5.3/5.7/6.2 engines have the same crank, pretty much all 6.0s do too with exception of early 99 cast iron headed 6.0s which have some kind of weird crank that I believe has an extension or something like that...
And OP your wife is right if people don't know what they have the F them, this isn't American Pickers where they offer people more they what want just to look good for TV lol...I found an ad on Craigslist for my super t10 Borg Warner 4 speed that came with crossmember, clutch, pressure plate, clutch fork, driveshaft, etc. for $300, which is a screaming deal even though your buy blows mine out of the water lol...if you ever wanna sell that t56 for $500 ill let you make the $300 off me lol!
And OP your wife is right if people don't know what they have the F them, this isn't American Pickers where they offer people more they what want just to look good for TV lol...I found an ad on Craigslist for my super t10 Borg Warner 4 speed that came with crossmember, clutch, pressure plate, clutch fork, driveshaft, etc. for $300, which is a screaming deal even though your buy blows mine out of the water lol...if you ever wanna sell that t56 for $500 ill let you make the $300 off me lol!
1.250 thick instead of .857
With that said you cant use a wide flange crank with a 98 and newer t56. All 5.7 motors had the narrow flange crank so if you have a 4.8 with the narrow flange you use the 98-00 ish Fbody pilot.
Last edited by knuts82; Jul 1, 2013 at 07:07 PM.