question about converting an manual to a automatic
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Joined: Sep 2003
Posts: 53
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From: hamilton square nj
question about converting an manual to a automatic
to convert a manual trans equiped car to an automatic do i need to change the crankshaft. being that the crank has a pilot bearing in it? will a flex plate just bolt right up to the crank? or is there a different bolt pattern or center size between manual cranks and auto cranks, and fly wheel and flex plate? :confused:
Race Director
Joined: Feb 2003
Posts: 11,672
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From: Lake Wylie SC
Re: question about converting an manual to a automatic (pettsir)
First of all why the change? It might have been better to sell your Vette and buy what you want. :yesnod:
There are a ton of guys that would kill for a 96 CE LT4 6spd.
[Modified by Strick, 11:00 PM 10/21/2003]
There are a ton of guys that would kill for a 96 CE LT4 6spd.
[Modified by Strick, 11:00 PM 10/21/2003]
Le Mans Master
Joined: Aug 2000
Posts: 8,838
Likes: 31
From: Australia
Re: question about converting an manual to a automatic (pettsir)
All you need is the correct flexplate (153 /168 tooth ) for your engine.The crank flange has a recess where the snout of the converter fits in .The pilot bearing is inside this again.The only differences I know of with bolt patterns are between 2 piece / single piece seal cranks (before or after '87).
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Joined: Sep 2003
Posts: 53
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From: hamilton square nj
Re: question about converting an manual to a automatic (Chefskeez6)
the conversion i'm thinking of doing is not for my vette. if the bolt patterns on all post 87 small blocks is the same and the center part of the cranck is the same then my question has been answered and a flex plate can be used in place of the fly wheel. just have to find out the amount of teeth, which one is the newer style?
Le Mans Master
Joined: Jan 2000
Posts: 6,376
Likes: 21
From: Traverse City MI
Re: question about converting an manual to a automatic (pettsir)
Here is the cheapest and most efficient way to convert a manual to an auto:
step 1: Sell the manual car
step 2: Buy an Automatic car
Kidding aside, it can be done but it won't be fun or cheap.
step 1: Sell the manual car
step 2: Buy an Automatic car
Kidding aside, it can be done but it won't be fun or cheap.
Drifting
Joined: Feb 2002
Posts: 1,952
Likes: 2
From: Little Rock Arkansas
Re: question about converting an manual to a automatic (Aaron71771)
Damn...Ya'll are making this out to be much more difficult than it is... I'm swapping my ZF6 for a TH400 with a t-brake right now. Here's the skinny:
1) You don't need to pull the pilot bearing, just bolt the correct flexplate to the crank.
2) Get on Ebay and find a brake pedal assembly for an auto equipped C4; you'll need to switch this assembly. Time consuming but not overly difficult, unless you have a cage in the car like I do...Then it's PAINFUL and a PITA!
3) You'll need the appropriate tranny...More than likely you'll be needing a 700R4/4L60 unless you're a hardcore idiot like me and buy a TH350/400. The 700/4L60 is Corvette specific because of the c-beam. Make sure you get the proper one. For a TH350/400 you'll have to fabricate an adapter for the tailhousing/c-beam attachment.
4) If you choose a computer controlled tranny you'll need your ECM programming changed to reflect this. On 4L60E's this means the computer controls your shifts; the computer controls torque converter lockup on both 700's and 4L60E's...
5) Go back to Ebay and find an appropriate automatic shift console for your year vehicle; and unless you're planning on using an aftermarket shifter buy a shift assembly as well.
Really that's it...Simple really...Just time...
-Jeb
1) You don't need to pull the pilot bearing, just bolt the correct flexplate to the crank.
2) Get on Ebay and find a brake pedal assembly for an auto equipped C4; you'll need to switch this assembly. Time consuming but not overly difficult, unless you have a cage in the car like I do...Then it's PAINFUL and a PITA!
3) You'll need the appropriate tranny...More than likely you'll be needing a 700R4/4L60 unless you're a hardcore idiot like me and buy a TH350/400. The 700/4L60 is Corvette specific because of the c-beam. Make sure you get the proper one. For a TH350/400 you'll have to fabricate an adapter for the tailhousing/c-beam attachment.
4) If you choose a computer controlled tranny you'll need your ECM programming changed to reflect this. On 4L60E's this means the computer controls your shifts; the computer controls torque converter lockup on both 700's and 4L60E's...
5) Go back to Ebay and find an appropriate automatic shift console for your year vehicle; and unless you're planning on using an aftermarket shifter buy a shift assembly as well.
Really that's it...Simple really...Just time...
-Jeb
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